Upload
dinhlien
View
279
Download
24
Embed Size (px)
Citation preview
Hahn-Meitner-lnstitut Berlin DE04F7266
Berlin Neutron Scattering Center
r
/ / :
14.5T
1 i ' '
BENSC EXPERIMENTAL REPORTS 2003
BENSCEXPERIMENTAL REPORTS
2003
edited by
Y. Kirschbaum, M. Tovar, D. Bischoffand R. Michaelsen
Berlin Neutron Scattering Center
Hahn-Meitner-lnstitut Berlin
April 2004
Berichte des Hahn-Meitner-Instituts Berlin
HMI - B 595
ISSN 0936 - 0891
Cover picture:
Field distorted magnetic spiral structure of CsCuCI3
From measurements at the triple axis spectrometer E1 the distortion of the uniform spiral by amagnetic field H could be obtained: The spin reduction present at zero field due to thefrustration on the triangular lattice is lifted for the spins pointing along the field while the size ofthe ordered spins opposite to the applied field is reduced even more. In addition spins along Hmove together and spins opposite to H spread apart.
(For further details please see experimental reports on page 4 and the report ofN.Ster, U. Schotte, A. Hoser, M. Meiner, in the Proceedings of the ECNS Montpellier, 2003)
The cover was designed by Digital Recording, Schwedenstrasse 9, D-13359 Berlin, http://www.dire.de
Editorial:
The Berlin Neutron Scattering Center(BENSC) is a department of theHahn-Meitner-lnstitut Berlin GmbH.BENSC develops and runs the NeutronScattering Instruments at the BerlinResearch Reactor BER II and isresponsible for the service to externalusers.The Hahn-Meitner-Institut-Berlin in derHelmholtz-Gemeinschaft (HMI) is anational research institution financed bythe Federal Republic of Germany andthe City State of Berlin.
Address:
Berlin Neutron Scattering CenterBENSCThe Scientific SecretaryDr. Rainer MichaelsenHahn-Meitner-lnstitutGlienicker Strasse 100D - 14109 Berlin (Wannsee)
Phone: +49 - 30 - 8062 3043, -2304
Fax: +49 - 30 - 8062 2523
Email: [email protected]
Net: http://www.hmi.de/bensc
CONTENTS
Introduction
List of BENSC Instruments
How to apply for BENSC Beam Time
Acknowledgement for Support by the European Commission
List of Contributed Reports
IV
VI
VIII
IX
XI
Part 1: EXPERIMENTAL REPORTS 2003
Magnetism
Magnetic Structure and Phase Transitions
Magnetic Thin Films
Structure
Chemical Structure
Structural Excitations
Soft Matter
Biology
Material Science and Industrial Applications
Development of Instruments and Methods
Fundamental Physics and Others
1
89
94
125
1
94
131
158
181
213
234
Part II: LIST OF BENSC PUBLICATIONS
Papers 2003 and supplement 2002 242
Theses 2003 254
AUTHOR INDEX 255
III
Introduction
The present volume contains 237 BENSC Ex-perimental Reports - 170 from external usersand 67 from BENSC staff members - and givesan overview on the experimental work carried outon BENSC during the year 2003.
BENSC User Service
BENSC is open to both, the national and theinternational user community, whereby about 70percent of the beam time is available to externalusers; 20% for long term collaborating groupsfrom German universities and other researchinstitutions and 50 % for peer reviewed shortterm projects.
Detailed descriptions of all essential BENSCneutron scattering instruments are available -and updated - on the BENSC Webpage.
http://www.hmi.de/bensc/instrumentationA colour printed version (brochure HMI-B 577) ison the market since March 2001 and availableon request.
BENSC puts special emphasis on sample envi-ronment under extreme conditions: high fields,high pressure, high, low and ultra low tempera-tures. The sample environment group has pub-lished a detailed technical handbook on BENSCsample environment. The handbook is updatedcontinuously and available in the INTERNETunder
http://www.hmi.de/bensc/sample-env/home.html
Scientific Selection Panel
The short term project beam time allocations forthe scheduled instruments are established on asemi-annual basis in collaboration with a scien-tific selection panel, the "user committee'. The2003 beam time quota for the short term projectsof the external user groups were allocated at twouser committee sessions in November 2002 andMay 2003. Twelve external and two in-housecommittee members have been involved:
External members:Prof. Dr. P. Baglioni
Univ. Firenze, ItalyProf. Dr. G. Decher
Univ. Strasbourg, FranceDr. M. Enderie
ILL Grenoble, FranceDr. Bela Farago
ILL Grenoble, FranceProf. Dr. M. Lerch
Techn. Univ. Berlin, GermanyProf. Dr. M. Loewenhaupt
Techn. Univ. Dresden, GermanyDr. R. May
ILL Grenoble, FranceProf. Dr. G. Renger
Techn. Univ. Berlin, GermanyDr. L. Pintschovius
FZ Karlsruhe, Germany / LLB Saclay, FranceProf. Dr. V. Sechovsky
Charles Univ. Prague, Czech RepublicProf. Dr. J. Texeira
CEA/CNRS/LLB Saclay, FranceProf. Dr. B. Toudic
Univ. Rennes I, FranceInternal members:
Prof. Dr. F. MezeiHMI-Berlin
Dr. H.A. GrafHMI-Berlin
Support for European Access to BENSCfrom the European Commission
The access of European research groups toBENSC has been generously supported by theEuropean Community under the Access to Re-search Infrastructures action of the ImprovingHuman Potential Programme (IHP). The EUsupport under IHP was available for groups fromEuropean Member States as well as for groupsfrom the Associated States; for groups fromSwitzerland slightly modified rules applied. Aslisted on page IX, an important proportion of thecontributions in this volume report on EU sup-ported experiments.
The "European Access to BENSC" action turnedout to be very successful. For the 4 years period2000-2003 our IHP files include
330 IHP supported projects, with700 visits of European users and
2213 neutron instrument days delivered.
The share of these BENSC users in the numberof BENSC publications in high-ranking journals issuperproportionally high.
Therefore we are happy to inform our usercommunity that the EU support for BENSC ac-cess will be continued under the 6th EU Frame-work Programme (FP6).
IV
Strong Representation of BENSC Usersat the ECNS in Montpellier
Not unexpectedly, the users and staff membersof BENSC have been extremely active partici-pants at the 3rd European Conference on Neu-tron Scattering, Montpellier, Sept. 2003:
They presented roughly 15% of all conferencecontributions. For some scientific fields, e.g."Magnetism" (clearly magnetism!), "Disorderedand Frustrated Systems", "Industrial and MedicalApplications", and "Neutrons and Life Science",the BENSC partition increased up to over 20%.More than 2/3 of the BENSC contributions camefrom our external users.
New Neutron Guide Hall
The construction of the new neutron guide hall isnow under way, the foundation ceremony for thebuilding has been held on 8 December 2003,and, due to the relatively mild winter, the prog-ress in schedule. It is foreseen that the Wide-Angle Spin-Echo Instrument V5 will move fromthe old hall to the new hall. V5 will profit from thereplacement of the old neutron guide by a newballistic guide with multispectral neutron beaminjection. The replacement of the guide will startin October 2004.
Other planned - and fully financed - instrumentsin the new hall areUSANSHigh resolution SANS, equipped with a
novel focusing techniqueEXED Extreme Environment Diffractometer,
equipped with tof-momochromatisation.
The experiment site for EXED is in addition fore-seen for the project of a 25T high field magnet.And suited as well for potential projects witheven higher steady magnetic fields.
. L-L-Rainer Michaelsen
List of BE NSC Instruments
Instruments in the Experiment Hall (Thermal Neutrons)
NO.
E1
E 2
E 3
E 4
E 5
E 6
E7
E9
E10
Instrument ext.
Thermal 3-Axis Spectrometerwith Polarization Analysis 3101Flat-Cone- andPowder Diffractometer 3102Residual Stress Analysis andTexture Diffractometer 31032-Axis Diffractometer 3104(E4a: Test Device)4-Circle Diffractometer 3104
Focusing Single CrystalDiffractometer 3105Residual Stress Analysis Diffractometer(under construction) 3107Fine Resolution Powder Diffractometer(FIREPOD)
3He-Diffractometer (HELINE)
Tube
D1N
R1
T2
R2
R3
T4
D1S
T5
D1S
Instalment Staff
Hans A.GrafJens KlenkeUniv. Tbingen:
Jens-Uwe HoffmannRainer SchneiderTobias Poeste co-op. TU BerlinKarel ProkesVadim Sikolenko
Anja Loose
Jorge Hemandez-VelascoNorbert SterRainer SchneiderFlorian Henkel
Dimitri ArgyriouDaniel TbbensMichael TovarKonrad SiemensmeyerSlavomir Mat'as
March 2004
ext.
277831672185
3096323728042847
2793
2768317130963237301627932768
27573135
Room
LS 335LS 334A 239
A 132A 129LR 138LR 141
LR 129
LR 144LR 142A 132A 133LR 137LR 129LR 144LS 132LS 138
Instruments in the Cold Neutron Guide Hall
No.
V1
V 2
V 3
V 4
V 5
V 6
V 7
B8
V12a
V12b
V13V14
Instrument ext.
Membrane Diffractometer3121
3-Axis Spectrometer for Cold Neutrons(FLEX) 3122
Time-of-Flight Spectrometer(NEAT) 3123
Small Angle Scattering Instrument(SANS)
3124
Spin-Echo Spectrometer with Time ofFlight Option (SPAN) 3125Reflectometer
2806
Cold n Tomography (CONRAD)(under construction)
n-Autoradiography 3121
Double-Crystal Diffractometer(bent crystal) 3131Double-Crystal Diffractometer(lamellar crystal) 3131Fundamental Physics
Mirror Test Device
Tube
NL1A
NL1B
NL2
NL3A
NL4
NL4
NL1BU
NL1A
NL3B
NL3B
NL3B
NL1B0
Instrument Staff
Thomas Hau co-op.Univ. DsseldorfSilvia Dante TU Darmstadt
Peter VorderwischKlaus Habicht co-op. TU DarmstadtOleg SobolevMargarita RussinaJrg PieperAlexandra BuchsteinerAlbrecht WiedenmannUwe KeiderlingElvira Garcia-MatresJrg HaugAndre HeinemannCatherine PappasCarlos FehrN.N.Marita GieriingsRoland Steitz co-op. MPI-KGF GolmRumen Krastev co-op.TU Berlin
Nikolay Kardjilov
Birgit Schrder-SmeibidlLee-Ann MertensWolfgang Treimer TFH BerlinMarkus Strobl TFH BerlinTFH Berlin: Wolfgang Treimer
Ekaterina Korobkina
Thomas Krist
ext.
20712071217128073067315930733179228323393240233927692046307231412924214930772298
23372292222124902221
2290
2045
Room
LS 333LS 333A 334A 333A 331A 351A 348A 349LR 211LR 209LR 208LR 209LR 208A 346A 344LS 130A 226A 221A 223A 317
GE145V122A 319A 316A 319
V132
A 233
Sample Environment Michael MeissnerPeter SmeibidlSebastian Genscher
220430803133
LS 131LR 147LS 113
VI
Berlin Neutron Scattering Center
V4(SANS)
? ' ,2, 3
^
(SPAN)
How to Apply for BENSC Beam Time
BENSC is open to both the national and the international user community with up to 70% of thebeam time available to external users. The main portion of this beam time is foreseen for shortterm research proposals. Applications for short term beam time will be examined by a scientificselection committee twice each year,
deadlines for submission of proposals are 15 March and 15 September.
Requests for urgent experiments (Directors's discretionary time) and for industrial use may besubmitted at any time.
Applications for BENSC beam time should be made electronically. The BENSC ONLINEPROPOSAL SUBMISSION (OPS) system is available in the internet via
http ://www.hmi.de/bensc/user-info/user-info_en. html
Further information on BENSC instrumentation can be obtained from the internet via
http ://www.hmi.de/bensc/instrumentation/instrumentation_en. html
The latest four-colour printed version of the instrumentation brochure (HMI-B 577) is on themarket since March 2001 and available on request:
BENSC-HMIOffice of the Scientific SecretaryGlienicker Str. 100D -14109 Berlin (Wannsee)GermanyPhone +49 - 30 - 8062 2304Fax: +49 - 30 - 8062 2523Email: benec9hmi.de
The BENSC Experimental Reports are intended as interim summaries. In view of the short time availablebetween the termination of certain experiments and the deadline for this report, the results presentedhere have to be considered as very preliminary. The inclusion of reports in this volume does notconstitute a publication in the usual sense. Final results will be submitted for publication in regularscientific journals.
VIM
Acknowledgement for Support by the European Commission
FP5. IHP. Access to Research Infrastructures
For most of the groups from European Community Member States and Associated States, the access toBENSC has been supported by the European Community under the
Access to Research Infrastructure Action of the Improving Human Potential Programme (IHP)
Results of IHP supported groups are contained in 66 reports of this volume.
contract number HPRI-CT-1999-00020 (IHP I) contract period 02/2000 - 01/2003 (IHP- no. 400)
IHP
145
220
318
403
413
445
446
448
448
449
452
454
462
472
473
476
482
497
498
499
501
502
503
506
508
1509
512
513
514
515
516
517
518
p.
77
1
192
18
139
197
140
158
175
37
183
134
126
181
20
67
160
207
41
90
3
60
92
193
121
167
136
168
172
79
135
42
46
authors
Deriu et al.
Idzikowski et al.
Arrighi et al.
Jensen et al.
Lo Celso et al.
Saroun et al.
Stepanek et al.
Klsgen et al.
Klsgen et al.
Marcano et al.
Barrallier et al.
Guilleaume et al.
lolin et al.
Schmidt et al.
Harrison et al.
Coldea et al.
Phoenix et al.
Vogl et al.
Hense et al.
Temst et al.
Jensen et al.
Gamari-Seale et al.
Montaigne et al.
Jobic et al.
Bourdarot et al.
Natali et al.
Calandrini et al.
Paciaroni et al.
Berti et al.
Bag lion i et al.
Triolo et al.
Gondek et al.
Tran et al.
affiliation
Univ. Parma, I
IMF PAS Poznari, PL
HWU Edinburgh, UK
Univ. Copenhagen, DK
Univ. Palermo, I
ASCR NPI Rez, CZ
IMC Prague, CZ
Univ. Odense, DK
Univ. Odense, DK
Univ. Cantabira, E
ENSAM, F
CNRS-Uni Bordeaux, F
LAS. Riga, LV
ISIS, RAL, UK
Univ. Edinburgh, UK
Univ. Oxford, UK
Univ. Centr. Lane. UK
Univ. Wien, A
TU Wien, A
KU Leuven, B
Univ. Copenhagen, DK
NCSR Demokritos, GR
LPM Nancy, F
CNRS Lyon, F
CEA Grenoble, F
OGG-INFM, Grenoble F
Univ. Parma, I
Univ. Perugia, I
Univ. Firenze, I
Univ. Firenze, I
IPCF-CNR, Messina, I
JU Krakow, PL
PAS Wroclaw, PL
IHPn
519
520
521
522
524
525
544
546
547
548
549
550
554
555
558
560
561
562
563
564
567
568
570
572
574
575
576
577
578
579
580
583
584
P-
44
112
97
70
150
69
127
91
25
24
23
198
108
48
184
87
124
123
174
169
137
132
225
49
113
2
14
43
45
236
190
152
73
authors
Wawrzynska et al.
Szymczak et al.
Borowiec et al.
Coldea et al.
Carelli et al.
Lake et al.
Gdel et al.
Temst et al.
Svoboda et al.
Vejpravova et al.
Kamarad et al.
Saroun et al.
Landa-Cnovas et al.
Campo et al.
Barrallier et al.
Farago et al.
Cahvo-Dahlborg et al.
Dahlborg et al.
Guenet et al.
Paciaroni et al.
Aliotta et al.
Triolo et al.
lolin et al.
Brck et al.
Szymczak et al.
Idzikowski et al.
Regulski et al.
Gondek et al.
Wawrzynska et al.
Tripadus et al.
Smrcok et al.
McLure et al.
Lake et al.
affiliation
JU Krakow, PL
PAS IP Warsaw, PL
PAS IP Warsaw, PL
Univ. Oxford, UK
Univ. Surrey, UK
Univ. Oxford, UK
Univ. Bern, CH
KU Leuven, B
CU Prague, CZ
CU Prague, CZ
ASCR IP Prague, CZASCR NPI Rez, CZ
ICMM-CSIC Madrid, E
Uni Zaragoza, ICMA, E
ENSAM, F
ILL Grenoble, F
CNRS Nancy, F
CNRS Nancy, F
Univ. Strasbourg, F
Univ. Perugia, I
CNR IPCF Messina, I
IPCF-CNR, Messina, I
L.A.S. Riga, LV
Univ. Amsterdam, NL
PAS IP Warsaw, PL
IMF PAS Poznart, PL
Univ. Warsaw, PL
JU Krakow, PL
JU Krakow, PL
IFIN-HH Bucharest, RO
SAS Bratislava, SK
Univ. Sheffield, UK
Univ. Oxford, UK
IX
Notice:
The quality of figures in the electronic versions, CD and WEB (http://www.hmi.de/bensc)
- especially in colour presentation - is remarkably higher than in print version
List of Contributed Experimental Reports
PAGE TITLE TEAM PROPOSAL
Magnetic Structure and Phase Transitions
1 Spin waves In amorphous andnanocrystalllne
(x = 10 or 30)
B. Idzikowski1
T. Krenicky2
J. Klenke3
S. Danilkin3
1INIF PAS Poznan, PL2EF SAV KoSice, SK3HMI Berlin
E1 PHY-02-0308
2 Neutron investigations of NI3AI itinerant B. Idzikowski1
electron system Y.-H. Hyun2
Y.V. Kudryavtsev3
J. Klenke/
1IMF PAS Poznan, PL2Univ. Hanyang, Seoul3NAS IMP Kiev, UA4HMI Berlin
E1 PHY-02-0397
3 Hc2 and magnetism in ErNijBzC A.JensenA.B. Abrahamsen2
K.N. Toft2
N.H. Andersen2
P. Smeibidl3
S. Kausche3
1Univ. Copenhagen, DK2Risoe, DK3HMI Berlin
12 Axis conversion effect in DyCu2 M. Rotter1
S. Raasch2
M. Drr2
X. Chen1
1Univ.Wien,A2TU Dresden3CU, Prague
P. Svoboda3
18 The magnetic structure of E1HI2B2C inan applied field along the c-axis
A. Jensen1
N.H. Andersen2
A.B. Abrahamsen2
K. Prokes3
S. Danilkin3
1Univ. Copenhagen, DK2Risoe, DK3HMI Berlin
E1 PHY-02-0366
4
5
6
7
8
10
11
Magnetism in RbCuCh and CsCuCh
Inelastic studies of UNiAl (2)
Phase transitions in Cu1.2sAgo.2sSe
Detailed investigation of the magneticstructures of TbCu2 on a single crystal
Magnetic order and diffuse scattering inRNI2B2C
Strong domain effects in the hexagonalferromagnet cobalt
Physical properties of magnetite Fe3O4confined In a porous glass
N. Ster1
U. Schotte1
A. Hoser2
K. Prokes
S. DanilkinJ. Klenke
A. Schneidewind1
A. Kreyig2
U. Witte2
A. Kreyssig1
O. Stocker?J.U. Hoffmann3
U. Kbler1
A. Hoser2
I. Golosovsky1
D. Kurdyukov2
1HMI Berlin2FZ Jlich/RWTH Aachen
HMI Berlin
HMI Berlin
1MPI CPfS Dresden2TU Dresden
1TU Dresden2MPI CPfS Dresden3Univ. Tbingen1RWTH Aachen2IFF, FZ-Jlich1PNPI, Gatchina, RU2PTI, St. Petersburg, RU
E1
E1
E1
E2
E2
E2
E2
PHY-02-385 +EF
EF
EF
PHY-01-1094
PHY-01-1095/01-1249
PHY-01-1251
PHY-01-1257
E2 PHY-01-1330
13
14
15
16
17
Spin-structure in Nd(i.x)PbxMnO3 singlecrystals
Reinvestigatlon of-Mn02 magneticstructure
Magnetic ordering ofY0.1 Ca0eGaxMni.xO3 (x = 0.01, 0.05)
Stability of the AF structure In UNIAInear the TN
Magnetic diffuse scattering in Nao.ToC02single crystals
U.K. Rler1
J.-U. Hoffmann2
M. Regulski1
R. Przenioslo1
W. Slawinski1
J.-U. Hoffmann2
Th. LonkaiA. PfrommerJ.-U. Hoffmann
K. Prokes
D. Argyriou1
N. Aliouane1
J.-U. Hoffmann2
1IFW Dresden2Univ. Tbingen1 Univ. Warsaw, PL2Univ. Tbingen
Univ. Tbingen
HMI Berlin
1HMI Berlin2Univ. Tbingen
E2
E2
E2
E2
E2
PHY-01-1331
PHY-01-1333
PHY-01-1402EF
EF
EF
E4 PHY-01-1125
XI
PAGE
List of Contributed Experimental Reports
TITLE TEAM PROPOSAL
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Domain growth kinetics ingeometrically frustrated Isingantiferromagnet CoNb&eMagnetic structure determination andH,T phase diagram of the S=1/2 squarelattice antiferromagnet (SCAP)2CuCI4Magnetic structure of TbNis
Investigation oftheA-phase ofCeCu2Si2 in an external magnetic field
Pressure induced magnetic structuresin Lu2Fen
Magnetic phases ofNdFezSh singlecrystalMagnetic phase transitions inU(Ni,Pd)2Si2 single crystals under highpressure
Magnetic field effect on ferromagneticorder in Ndi.agCeo.isCu04
Magnetic field dependence of themartensltic transformation in Ni2MnGa
Frustrated magnetic moments inCePdAI in magnetic fieldsMagnetic structures in UlrAI
Metamagnetic transitions in DyNiAl
On the magnetic structure ofUlrGe
Crystal structure ofLa2Cu04 andLai.xSrxCuO4(x = 0.01)
Magnetic structure ofLa2CuO4
Crystal and magnetic structure ofTbVO3
Antiferromagnetic order in NdVO3
Antiferromagnetic order in LaVO3
The low temperature magnetic phasesofCeNii.xCux
Magnetic order in CeCu&h
S. Mitsuda1
Y. Inomoto1
K. Prokes2
A. Harrison1
F. Coomer1
R. Feyerherm2
A.N. Pirogov1
S. Lee2
A. Podlesnyak3
0 . Stocken1
E. Faulhaber2
H.S. Jeevan1
J. Kamarad1
0 . Prokhnenko1
K. Prokes2
J. VejpravovaJ. Prchal
P. Svoboda1
F. Honda1
J. Prchal1
K. Prokes2
M. Matsuura1
P. Dai2
K. Prokes3
D. Argyriou3
S. Shapiro1
P. Vorderwisch2
K. Prokes2
K. Prokes
K. Prokes1
J. Prchal2
K. Prokes1
J. Prchal2
K. Prokes
B. Keimer1
G. Blumberg3
Y. Ando4
M. Reehuis12
B. Keimer1
G. Blumberg3
Y. Ando4
M. Reehuis12
C. Ulrich1
B. Keimer1
M. Reehuis112
C. Ulrich1
B. Keimer1
M. Reehuis1'2
C. Ulrich1
B. Keimer1
M. Reehuis12
N. Marcano1
J.C. Gomez Sal1
J. Hernandez Velasco2
E. Faulhaber1
0 . Stockert2
1Tokyo US, JP2HMI Berlin
1Univ. Edinburgh, UK2HMI Berlin
1RAS Ekatarinburg, RU2SKKU Suwon, KP3ETHZ & PSI, CH1MPI CPfS Dresden2TU Dresden
1ASCR IP Prague, CZ2HMI Berlin
CU Prague, CZ
1CU Prague, CZ2HMI Berlin
1ORNL, USA2Univ. Tennessee, USA3HMI Berlin
1BNL Upton, US2HMI Berlin
HMI Berlin
1HMI Berlin2CU Prague, CZ1HMI Berlin2CU Prague, CZ
HMI Berlin
1MPI-FKF Stuttgart2HMI Berlin3Bell Labs, NJ4CRIEPI, Komae, Tokyo1MPI-FKF Stuttgart2HMI Berlin3Bell Labs, NJ4CRIEPI, Komae, Tokyo1MPI-FKF Stuttgart2HMI Berlin
1MPI-FKF Stuttgart2HMI Berlin
1MPI-FKF Stuttgart2HMI Berlin
1Univ. Cantabria, E2HMI Berlin
1TU Dresden2MPI CPfS Dresden
E4
E4
E4
E4
E4
E4
E4
E4
E4
V4
E4
E4
E4/E6
E5
E5
E5
E5
E5
E6
E6
PHY-01-1128
CHE-01-1206
PHY-01-1276
PHY-01-1352
PHY-01-1353
PHY-01-1354
PHY-01-1355
PHY-01-1357
EF
EF
EF
EF
EF
PHY-01-1378
PHY-01-1378
PHY-01-1380
PHY-01-1380
EF
PHY-01-1211
PHY-01-1278
XII
PAGE
List of Contributed Experimental Reports
TITLE TEAM PROPOSAL
39 New nitrogen compounds G. Auffermann1
R. Kniep1
R. Niewa1
M. Kirchner1
J. Hernandez-Velasco2
N. Ster2
1MPI CPfS Dresden2HMI Berlin
E6 CHE-01-1279
40
41
42
43
On the two magnetic order parametersof yttrium iron garnet (YIG)Spin structure in HoAg
Neutron diffraction studies of magneticordering in R3Co8Sn4 (R-rare earth)compoundsNeutron diffraction studies ofnon-stoichiometric RNi(i.x)ln(i*x) compounds(R-rare earth)
U. Kbler1
A. Hoser2
K. Hense1
E. Grate1
A. Hoser2
L. Gondek1
S. Baran1
J. Hernandez-Velasco2
L. Gondek1
S. Baran1
J. Hernandez-Velasco2
1IFF, FZ-Jlich2RWTH Aachen1TU Wien, A2RWTH Aachen
1JU Krakow, PL2HMI Berlin
1JU Krakow, PL2HMI Berlin
E6
E6
E6
E6
PHY-01-1281PHY-01-1283
PHY-01-1284
PHY-01-1368
44 Neutron diffraction study of RsCu^U (R Tb, Dy, Ho, Er) compounds
E. Wawrzynska1
J. Hernandez-Velasco'N. Ster2
B. Penc1
A. Szytula1
Z. Tomkowicz1
1JU Krakow, PL2HMI Berlin
E6 PHY-01-1286
45
46
47
48
49
50
51
52
53
54
Neutron diffraction study ofR3Pd,Ge4(R = Tb and Er) compounds
Neutron diffraction study of poly- andsinglecrystalline UNio.sSb2 samples
The magnetic structure of theferromagnetic compound NagCozOr
Rare-earth spin canting and magneticirreversibility in NdeFe10AI4
Neutron diffraction study of a virgintransition in MnFe(P,Si) compounds
Magnetic order in CeBiPt
Phase diagram of NaxCai.xCo204with xe[0.85, 0.95]
Phase Diagram ofNaxCo02with xe [0.6,1] at room temperature
Phase separation v's quantum criticalpoint In perovskitic manganites
Complex structure of theNaxCoO2,yD2O, NaxCo02, yH2O zD2O
E. Wawrzynska1
J. Hernandez-Velasco2
B. Penc1
A. Szytula1
V.H. Tran1
J. Hernandez-Velasco2
N. Ster2
O. Leynaud1
M. Sofin1
M. Jansen1
J. Hernandez-Velasco2
J. Campo1
J. Luzon1
J.G. Cuello2
J. Hernandez-Velasco3
E. Brck1
L. Zhang1
O. MozerK. Prokes3
O. Stockert1
G. Goll2
D. ArgyriouC. MilneN. AliouaneJ. Hernandez-Velasco
D. ArgyriouC. MilneN. AliouaneJ. Hernandez-Velasco
D.N. ArgyriouC. MilneN. AliouaneJ. Hernandez-Velasco
D. ArgyriouC. MilneN. Aliouane
1JU Krakow, PL2HMI Berlin
1PAS ILTSR Wroclaw, PL2HMI Berlin
1MPI-FKF Stuttgart2HMI Berlin
1MRI of Aragon, E2ILL, Grenoble, F3HMI Berlin
1 Univ. Amsterdam, NL2Univ. Modena, I3HMI Berlin
1MPI CPfS Dresden2Univ. KarlsruheHMI Berlin
HMI Berlin
HMI Berlin
HMI Berlin
E6
E6
E6
E6
E6
E6
E6
E6
E6
E6/E9
PHY-01-1370
PHY-01-1287
CHE-01-1364
PHY-01-1365
MAT-01-1367
PHY-01-1478EF
EF
EF
EF
XIII
PAGE
List of Contributed Experimental Reports
TITLE TEAM PROPOSAL
55
56
57
58
59
In situ neutron diffraction on thedischarging process of an alkalinebattery
Magnetic structures ofR&aMOs at H=0and applied field (R=1MGd, Dy, Ho;M=Co, Ni, Cu)Influence of preparation conditions onthe magnetic structure ofMnCr2O4spinelMagnetic investigations in the spinelsystem CuxNii.xCr24
The determination of the magnetic andnuclear structure ofNarCozOe
N. KardjilovI. MankeJ. BanhartJ. Hernandez-Velasco
J. Hernandez-Velasco
D.M. Tbbens
M. Tovar1
R. Torabi12
0. Leynaud1
M. Sofin1
M. Jansen1
J. Hernandez-Velasco2
HMI Berlin
HMI Berlin
HMI Berlin
1HMI Berlin2TH Berlin1MPI-FKF Stuttgart2HMI Berlin
E6
E6E9
E9/E6
E6/E9
E9
EF
EF
EF
EF
CHE-01-126201-1280
60 A neutron diffraction study ofLaCoo.sMno.5f Lao.7Cao.3Coo.sMfJo.sO3 andLaaaSro.2Coo.sMno.sO3
H. Gamari-Seale1
I.O. Troyanchuk2
A. Sazonov2
K.L. Stefanopoulos1
D.M. Tbbens3
1NCSR Demokritos, GR2NAS Minsk, BY3HMI Berlin
68 Spin dynamics in the unconventionalquantum magnet NH4CuCh
Ch. Regg1
P. Vorderwisch2
P. Smeibidl2
S. Kausche2
M. Meissner2
1LNS, ETH Zrich & PSI2HMI Berlin
E9 PHY-01-1264
61
62
63
64
65
66
67
Neutron diffraction study ofLai.xSrxCoO3 magnetic structure atx- 0.15 and 0.3Neutron powder diffraction study ofEu(BaNd)2Cu3O7
Crystal and magnetic structure ofmanganese malonate
Magnetic moments of the transitionmetal ions in MnF2, FeF2 and C0F2
Two magnetically ordered phases inFe[C(CN)3h
Enhancement of the magnetic order inMg doped CuGeOe
Magnetic excitations ofquasi-1D Isingchain at high field
V.V. Sikolenko1
A. Sazonov2
V.A. Sirenko1
V.V. Eremenko1
M. Tovar2
R. FeyerhermD. M. TbbensS. LandsgesellW. Jauch1
M. Reehuis2'1
R. Feyerherm1
A. Loose1
T. Hau2'1
S. Landsgesell1
R.J. BirgeneauS. WakimotoC. Stock
R. Coldea1
D.A. Tennant2
K. Habicht43
P. Smeibidl3
1HMI Berlin2NAS Minsk, BY
1ILT Kharkov, UA2HMI Berlin
HMI Berlin
1HMI Berlin2MPI-FKF Stuttgart
1HMI Berlin2Univ. Dsseldorf
Univ. Toronto, CAN
1Univ. Oxford, UK2RAS, UK3HMI Berlin^ U Darmstadt
E9
E9
E9
E9
V1
V2/E1V2
PHY01-1268
MAT-01-1271
EF
EF
EF
PHY-02-0347
PHY-02-0352
V2 PHY-02-0374
69 Three dimensional field-inducedmagnetism in High-Tc La2.xSrxCu04
B. Lake1
K. Lefmann2
N. Christensen2
1Univ. Oxford, UK2Risoe, DK
V2 PHY-02-0379
70 Field-induced magnetization plateau ina 2D frustrated quantum magnet
R. Coldea1
D.A. Tennant2
T. Ono3
K. Habicht4'5
S. Genscher5
1Univ. Oxford, UK2RAS, UK3TIT, Tokyo, JP^ U Darmstadt5HMI Berlin
V2 PHY-02-0380
XIV
PAGE
List of Contributed Experimental Reports
TITLE TEAM PROPOSAL
71
72
73
74
75
7677
78
79
80
81
82
83
84
85
86
87
88
Neutron Resonance spin echo (NRSE)study of the magnon linewidth inBaMnF4
Neutron Resonance spin echo (NRSE)study of the Q- and temperaturedependence of the magnon linewidth inMnF2Searching for charge order in High-TcLa2.xSrxCu04Phonon softening preceding thereverse martensltic transformation inNhMnGa
Magnetic field effect on anti-ferromagnetic order Ndi.asCeaieCuO4
Inelastic Studies ofUNiAI(1)
Nanostructured intermetallic alloys withGMR behaviour
Pressure dependence of the magneticphase diagram in MnSi
SANS investigation of magneticnanoparticles using polarized neutrons
SANSPOL studies of hard magneticNdeoFexCo3o.xAlio(x = 20, 7.S and 0)alloysSANSPOL in multicomponent Nd-basedalloys at high temperatures
Magnetic Field induced arrangement ofconcentrated magnetosomes studiedby SANSField variation technique and Langevlnbehaviour of Co-ferrofluldsSANSPOL measurements fora newkind of Co-Ferrofluids
SANSPOL Investigations of CobaltFerrite Fluids
SANSPOL investigation of magneticpolystrene nanopartlcels
Surface dynamics of magnetism offerrofluid particles
Characterisation of the water depletionlayer at the water/hydrophobicinterface: effect surface hydrophobicity
S.P. Bayrakci1
T. Keller1
B. Keimer1
K. Habicht32
S.P. Bayrakci1
T. Keller1
B. Keimer1
K. Habicht32
B. Lake
P. Vorderwisch1
S. Shapiro2
M. Matsuura1
P. Dai2
0. Sobolev3
D. Argyriou3
K. Prokes
A. Deriu1
F. Spizzo1
A. Hoell2
L. Pintschovius1
D. Reznik2
C. Pfleiderer2
P. Baglioni1
D. Berti1
A. Wiedenmann2
0. PerroudE. Garcia-MatresA. Wiedenmann
E. Garcfa-Matres0. PerroudA. WiedenmannA. HoellA. Wiedenmann
A. HeinemannA. WiedenmannA. HeinemannA. WiedenmannM. Kammel
M. KammelA. WiedenmannA. Heinemann
M. KammelA. WiedenmannA. HeinemannB. Farago1
E. Dubois2
R. Perzynski2
M. Grunze1
M. Himmelhaus1
M. Maccarini1
R. Steitz2'34
1MPI-FKF Stuttgart2HMI Berlin3TU Darmstadt
1MPI-FKF Stuttgart2HMI Berlin3TU Darmstadt
Univ. Oxford, UK
1HMI Berlin2BNL Upton, US
1ORNL, USAzUniv. of Tennessee.USA3HMI Berlin
HMI Berlin1Univ. Parma, I2HMI Berlin
1FZ Karlsruhe2Univ. Karlsruhe
1Univ. Firenze, I2HMI Berlin
HMI Berlin
HMI Berlin
HMI Berlin
HMI Berlin
HMI Berlin
HMI Berlin
HMI Berlin
1ILL Grenoble, F2CNRS, Paris, F
1Univ. Heidelberg2TU Berlin3MPI-KGF Golm4HMI Berlin
V2
V2
V2
V2
V2
V2V4
V4
V4
V4
V4
V4
V4
V4
V4
V4
V5
V6
PHY-02-0400
EF
PHY-02-0402PHY-02-0415
EF
EF
PHY-04-0595
PHY-04-0802
CHE-04-0807
EF
EF
EF
EF
EF
EF
EF
PHY-03-0301
CHE-04-0895
XV
PAGE
List of Contributed Experimental Reports
TITLE TEAM PROPOSAL
Magnetic Thin Films
89
90
91
Spin density waves in Cr/Ni bilayers
Polarized neutron reflectivity onexchange bias nanostructures
Polarized neutron reflectivity onexchange bias nanostructures
H. Zabel1
E. Kravtsov1
K. Prokes2
V. Sikolenko2
K. Temst1
H. Loosvelt1
0 . Popova1
H. Fritzsche2
K. Temst1
H. Loosvelt1
0 . Popova1
M. Gierlings2
1RU Bochum2HMI Berlin
1KU Leuven, B2HMI Berlin
1KU Leuven, B2HMI Berlin
E4 PHY-01-1274
V 6 PHY-04*0832
V 6 PHY-04-0897
92 Antiferromagnetic In Fe I MgO / Fetrilayer
F. Montaigne1
J. Faure-Vincent1
C. Bellouard1
M. Gierlings2
H. Fritzsche2
1LPM Nancy, F2HMI Berlin
V 6 PHY-04-0833
93 Off-specular PNR studies on a Co/CoOexchange bias multilayer
M. Gierlings1
M. Gruyters1
D. Riegel1
M. Prandolini1
H. Fritzsche1 z
1HMI Berlin2NRC Chalk River, CAN
V 6 PHY-04-0914EF
Chemical Structure
94 Search for static charge order peaks inoptimally doped YBCO
L. Pintschovius FZ Karlsruhe E1 PHY-02-0365
95 Diffuse scattering of cation-doped I. Kaiser-Bischoffzirconia-oxynitride J.U. Hoffmann2
1LMU Mnchen2Univ. Tbingen
E2 CHE-01-1250
96 Diffuse scattering of cation-dopedzirconia-oxynitride
I. Kaiser-Bischoff1
J.U. Hoffmann21LMU Mnchen2Univ. Tbingen
E2 CHE-01-1332
97 Structural and magnetic phase M.T. Borowiec1
transition of potasslum-holmium J.U. Hoffmann2
double tungstates I. Glavatski3'4
1PAS IP Warsaw, PL2Univ. Tbingen3HMI Berlin4NAS IMP Kiev, UA
E2 PHY-01-125401-1334
98 Neutron diffraction study oforientational glass state
L. S. Smirnov1
J.U. Hoffmann2
I. Glavatski3-4
1RFSSCITEP Moscow2Univ. Tbingen3HMI Berlin4NAS IMP Kiev, UA
E2 PHY-01-1256
99 Refinement of the hydrogen positionsin (NH4)2SeO4
L.S. Smirnov1
A. Loose2
N. Berntsen3
G. Melnyk3
1RFSSCITEP Moscow2HMI Berlin3JG-Univ. Mainz
E5 PHY-01-1223
100 Hydrogen positions in ND4DSO4 K. KnorrG. Lentz
CAU Kiel E5 MAT-01-1291
101 Single crystal study of the structuralinstability in deuteratedK4BEDT-TTF)2CU [N(CN)JBr
S. Siillow1
J. Kreitlow1
A. Loose2
R. Feyerherm2
1TU Braunschweig2HMI Berlin
E5 PHY-01-1376
102 Neutron diffraction study ofSrFe03s C. Ulrich1
B. Keimer1
M. Reehuis1'2
1MPI-FKF Stuttgart2HMI Berlin
E5 PHY-01-1379
103 Superstructures in Zn2x(Culn)1.xS2 thinfilms
S. Schorr1
F. Fleischer1
N. Ster2
1Univ. Leipzig2HMI Berlin
E6 PHY-01-1282
XVI
PAGE
List of Contributed Experimental Reports
TITLE TEAM PROPOSAL
104 Structure and anion ordering in S. Schorr1
A. Franz1
M. Tovar2
1Univ. Leipzig2HMI Berlin
E9 PHY-01-1263
105 Structural anomalies and cation S. Schorr1
ordering in 2ZnSe-CulnSe2 M. Tovar2
1Univ. Leipzig2HMI Berlin
E9 PHY-01-1340
106 Structural anomalies and cation S.Schorr1
ordering in 2ZnSe-CulnSe2 N. Ster21Univ. Leipzig2HMI Berlin
E6 PHY-01-1361
107 Neutron diffraction study of FeCr2S4 R.Sadykov1
and substituted spinels N. Ster2
{(Feo.ixlnx)o.sCuodCr2S4(xBO.3;O.4) underpressure up to 20kbar
1RAS Russia2HMI Berlin
E6 PHY-01-1373
108 Cation order and magnetic structure ofruale related SbVO4
A. Landa-Cnovas1
J. Garcfa-Garcfa2
J. Hernndez-Velasco3
1ICMM-CSIC Madrid, E2Univ. Stockholm, S3HMI Berlin
E6 CHE-E9 01-1366
109 Hydration of NaxCoO2 C. MilneD. ArgyriouJ. Hernandez-Velasco
HMI Berlin E6 EF
110 Crystal and Magnetic structure of theMolecular Magnet Mn(NCS)zpyz2
J. Hernandez-Velasco1
N.N. Bordallo1
R. Feyerherm1
J.L. Manson2
1HMI Berlin2ANL, Argonne, USA
E6 EF
111 Phase transition in Sr, Mg dopedLaGaOe superionlc conductors
M.M. Gnter1
H. Boysen2
M. Lerch1
D. M. Tbbens3
1TU Berlin2Univ. Mnchen3HMI Berlin
E9 CHE-01-1260
112 Orbital order-disorder transitions in La- H. Szymczak1
deficient perovskite manganites M. Tovar21PAS IP Warsaw, PL'HMI Berlin
E9 PHY-01-1265
113 Neutron diffraction studies of crystaland magnetic structures of
H. Szymczak1
M. Tovar21PAS IP Warsaw, PL2HMI Berlin
E9 PHY-01-1346
114 Neutron diffraction study offerroelectric NaNO2 nanowires
A. Naberezhnov1
A. Sotnikov1
M. Tovar2
1PTI St. Petersburg, RU'HMI Berlin
E9 PHY-01-1201
115 Order parameter and structure ofnanocomposite NaNO2 embedded intoporous glass
A. Naberezhnov1
Y. Kumzerov2
M. Tovar3
1RAS loffe St. Petersburg2HMI Berlin
E9 PHY-01-1269
116 Structure and phase transition in aconfined KH1PO4
A. NaberezhnovO. Smirnov2
M. Tovar3
1RAS loffe St. Petersburg2RAS PNPI Gatchina, RU3HMI Berlin
E9 PHY-01-1348
117 New Compounds G. AuffermannR. Kniep1
B. Schupp2
C. Sekar2
G. Krabbes2
D. M. Tbbens3
nMPI CPfS Dresden2IFW Dresden3HMI Berlin
E9 CHE-01-1261
118 New nitrides and Nitridometalates G. Auffermann1
R. Kniep1
R. Niewa1
D. Zherebtsov1
Y. Prots1
1MPI CPfS Dresden2HMI Berlin
E9 CHE-01-1338
119
120
Cubic - cubic phase transition ofalumosilicate iodide sodalite
Crystal structure of Ce*Nlo.Cuo.i
D. M. Tbbens2
Th.M. Gesing1
C.H. Rscher1
J.-Ch. Buhl1
D. M. Tbbens2
N. Marcano1
J.C. Gomez Sal1
J. Hernndez-Velasco2
1Univ. Hannover2HMI Berlin
1Univ. Cantabria, E2HMI Berlin
E9 EF
E9 EF
XVII
PAGE
List of Contributed Experimental Reports
TITLE TEAM PROPOSAL
121
122
123
124
Study of the magnetic transition andhidden order in URu&i at 17 TeslaRotational tunneling as a probe ofadsorption sites and potentials inmethyl iodide clathrate
HBcrostructure of the molten GaPbmonotectic alloyNKcrostructure ofPdSi metallic glassesof different thickness produced underfully controlled experimental conditions
Structural Excitations
F. BourdarotB. FakM. Prager1
A. Desmedt2
A. Buchsteiner3
J. Pieper3
U. Dahlborg1
J. Haug2
M. Calvo-Dahlborg1
CM. Bao1
U. Dahlborg1
J. Haug2
CEA Grenoble, F
1FZ Julien2Univ. Bordeaux, F3HMI Berlin
1CNRS Nancy F2HMI Berlin1CNRS Nancy F2HMI Berlin
V2
V3
V4
V4
PHY-02-0375CHE-03-0256
PHY-04-0874MAT-04-0875
125 NRSE Investigation of PhononLifetimes In the conventionalSuperconductor Nb
K. Habicht31
F. Mezei1
T. Keller2
B. Keimer2
S. Bayrakci2
1HMI BENSC2MPI-FKF Stuttgart3TU Darmstadt
V2 PHY-02-0387
126 Neutron scattering by ultrasound in themosaic single crystals
E. lolin1
L. Rusevich1
F. Mezei2
J. Pieper2
A. Buchsteiner2
1L.A.S., Riga, LV2HMI Berlin
V3 PHY-03-0238
127 Ground state energy splittings in atetrahedral Coflll) complex
H.U. Gdel1
R. Bircher1
A. Sieber1
H. Weihe2
A. Buchsteiner3
1Univ. Bern, CH2Univ. Copenhagen, DK3HMI Berlin
V3 PHY-03-0267
128 Investigation of the low energyvibrational density of states inamorphous-FeojYoj ribbons
W. Keune1
B. Sahoo1
V. Kuncser2
J. Pieper3
1Univ. Duisburg-Essen2NIPM Bucharest, RO3HMI Berlin
V3 PHY-03-0287
129 Quasielastic neutron scattering ofmethyl fluoride and methyl chloride
O. Kirstein1
M. Prager2
A. Buchsteiner3
1ANSTO, AU2FZ Jlich3HMI Berlin
V3 PHY-03-0294
130 Spin echo study of the phason R A. Branddynamics in i-AICuFe quasicrystals C, Pappas2
1Univ. Duisburg2HMI Berlin
V5 PHY-03-0250
Soft Matter
131 Hydrogen-bonded structures in F. Aliottamethanol/CCU mixtures D. M. Tbbens2
1IPCF Messina,2HMI Berlin
E9 PHY-01-1344
132 Local structure in atactic polypropyleneacross the glass transition
A. Triolo1
D. M. Tbbens2
O. Russina2
1IPCF-CNR, Messina, I2HMI Berlin
E9 PHY-01-1345
133 Intriguing structural behaviour of themodel system L-alanine
N. Bordallo1
D.N. Argyriou1
M. Barthes2
1HMI Berlin2Univ. Montepellier II, F
E9 EF
134 Molecular dynamics in the F. Guillaume1
incommensurate 2-decanone/urea A. Desmedt1
crystal R. Lechner2
1CNRS - Univ. Bordeaux, F2HMI Berlin
V3 CHE-03-0234
135 Segmental dynamics of confined PEO A. Triolo1
O Russina2
J. Pieper2
1CNR IPCF Messina, I2HMI Berlin
V3 PHY-03-0262
XVIII
PAGE
List of Contributed Experimental Reports
TITLE TEAM PROPOSAL
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
Dynamic features ofhydration waterinteracting with Hydrophobie molecules
Incoherent quasi elastic neutronscattering in methanol/CCI4 mixtures
Dynamics of the CH3.and NHe-groups inL-alanine
Structural investigation onphosphollpidlc-cyclodextrin derivatives
Nanostructured ternary polymersystems
Dynamics of 4-n-4'-octyl-cyanobiphenilby neutron spin echoTemperature dependence ofpoly(etylene oxide) brushes
Internal order of polyelectrolytemultilayers
The osmotically swollen phase ofpolyelectrolyte brushesIs there an odd/even effect of the watercontent of polyelectrolyte multilayers?
Polyelectrolyte multilayers: hydrationand odd-and-even effects
Thermodynamic stability ofpolyelectrolyte multilayers
Chemical switching of protein-surfaceInteractions with weak polyelectrolytebrushes
Vapour sorption in min self-assembledAu-nanoparticle/dendrimer compositefilms
Polymer interfaces near the criticalpointStudy of the geometry of lipid coupledto polyelectrolyte multilayers
Spontaneous temperature-recycledwetting at solid/liquid interfaces innear-critical liquid/liquid mixturesmediated by wall coating
V. Calandrini1
A. Deriu1
G. Onori2
R. Lechner3
J. Pieper3
F. Aliotta1
C. Vasi1
F. Saija1
A. Buchsteiner2
H.N. Bordallo1
C. Fehr1
S. Rols2
M. Bathed2
F. Lo Celso1
R. Triolo1
U. Keiderling2
P. Stepanek1
P. Cernoch1
D. Clemens2
A. Wiedenmann2
C. FehrC. Pappas
C. HelmA. WesemannH. AhrensC. HelmM. GopinadhanH. Ahrens
CA. HelmH. AhrensR. v. Klitzing1
W. Wong1
S. Schemmel1
R. Steitz1'2'3
M. Schnhoff1
D. Carriere1
R. Krastev1'2'3
C. Delajon1
I. Estrela-Lopis1
E. Donath1
G. Ibarz2
R. Krastev23-4
M. Tanaka1
F. Rehfeldt1
R. Steitz2'3'4
T. Vossmeyer1
R. Krastev2'3'4
N. Krasteva1
C. Carelli1
M. Sferrazza2
C. Delajon1'2
R. Krastev2'3'4
I.A. McLure1
M.C. Vergara-Gutierrez1
R. Stertz"'4
1Univ. Parma, I2Univ. Perugia, I3HMI Berlin
1CNR IPCF Messina, I2HMI Berlin
1HMI Berlin2Univ. Montepellier II, F
1Univ. Palermo, I2HMI Berlin
1IMC Prague, CZ2HMI Berlin
HMI Berlin
Univ. Greifswald
Univ. Greifswald
Univ. Greifswald
1TU Berlin2MPI-KGF Golm3HMI Berlin
1MPI-KGF Golm2TU Berlin3HMI Berlin
1Univ. Leipzig2MPI-KGF Golm^ U Berlin4HMI Berlin1TU Mnchen2TU Berlin3MPI-KGF Golm4HMI Berlin1Sony Stuttgart2MPI-KGF Golm3TU Berlin4HMI Berlin1Univ. Surrey, UK2Univ. Brussels, B1Uni+ISIS Strasbourg, F2MPI-KGF Golm3TU Berlin4HMI Berlin1Univ Sheffield, UK2TU Berlin3MPI-KGF Golm4HMI Berlin
V3
V3
V3
V4
V4
V5
V6
V6
V6
V6
V6
V6
V6
V6
V6
V6
V6
PHY-03-0264
PHY-03-0289
EF
CHE-04-0689
CHE-04*0748
EF
MAT-04-0662
PHY-04-0893
PHY-04-0894PHY-04-0822
PHY-04-0826
PHY-04-0829
PHY-04-0830
MAT-04-0831
PHY-04-0836CHE-04-0859LT
CHE-04-0900
XIX
PAGE
List of Contributed Experimental Reports
TITLE TEAM PROPOSAL
153 Lipid bilayer formation on hydrophilic R. Krastev1'2'3
substrate in presence sucrose Th. Gutberlet41MPI-KGF Golm2TU Berlin3HMI Berlin4PSI Villigen, CH
V6 CHE-04-0908LT
154 Vapour sorption in thin self-assembled R. Krastev123
AU-nanoparticle/hexadecanedithiol N. Krasteva4
composite films T. Vossmeyer4
1MPI-KGF Golm2TU Berlin2HMI Berlin4Sony Stuttgart
V6 CHE-04-0909LT
155 Depletion of water at the hydrophilicsolid/liquid interface
R. Steitz123
G.H. Findenegg1
S. Schemmel
TU Berlin2MPI-KGF Golm3HMI Berlin
V6 CHE-04-0910LT
156 Depletion of methanol at theHydrophobie solid/liquid interface
R. Steitz123
G.H. Findenegg1
S. Schemmel
TU Berlin2MPI-KGF Golm3HMI Berlin
V6 CHE-04-0911LT
157 Surfactant layers at the Si/liquidinterface as a function of time andtemperature
R. Steitz12'3
G.H. Findenegg1
S. Schemmel
1TU Berlin2MPI-KGF Golm3HMI Berlin
V6 CHE-04-0912LT
Biology
158
160
Stability of lipid bilayers uponinteraction with membrane activemolecules
Neutron diffraction studies on themembrane interactions of m-calpain,domain V
B. Klsgen1
M. Dathe2
T. Hau4'3
S. Dante5
D.A. Phoenix1
S. Dennison1
F. Harris1
S. Dante2
T. Hau34
Univ. Odense, DK2FI Mol. Pharm. Berlin3HMI Berlin4Univ. DsseldorfT U Darmstadt1Univ. Centr. Lane. UK2TU Darmstadt3Univ. Dsseldorf4HMI Berlin
V1
V1
PHY-01-1229
BIO-01-1233
161 Peptide-membrane interaction R. WillumeitM. KumpugdeeS. LinserF. Frster
GKSS Geesthacht V1 BIO-01-129401-1384
163 Interactions of lipids with peptideantibiotics
F. Bringezu1
A. Gabke1
M. Majerowicz1
T. Hau23
S. Dante4
1Univ. Leipzig2Univ. Dsseldorf3HMI Berlin*TU Darmstadt
V1 BIO-01-1295
164 Localizing the quinone domain ofubiquinone in the oxidized and reducedstate
ThS.T.N.
. Haines1
Dante2
Hau34
Dencher2
1 City Coll. of CUNY, USA2TU Darmstadt3Univ. Dsseldorf4HMI Berlin
V1 BIO-01-1296
165 Investigation of model stratum corneumlipid via neutron diffraction
M. Kiselev1'2
J. Zbytovska1
S. Wartewig1
R. NeuberfS. Dante3
T. Hau4'5
1MLU Halle2JINR Dubna, RU^TU Darmstadt4Univ. Dsseldorf5HMI Berlin
V1 BIO01-1387
166 Interaction of -amyloid peptide (1-42)with lipid unilamellar vesicles
S. Dante1
T. Hau2'3
N. Dencher
1TU Darmstadt2Univ. Dsseldorf3HMI Berlin
V1 BIO-01-1427
167 Transfection efficiency versusmembrane dynamics in DNA-cationiclipoplex
F. Natali1
C. Castellano2
J. Pieper3
A. Buchsteiner3
1OGG-INFM, Grenoble, F2Univ. Roma, I3HMI Berlin
V3 BIO-03-0258
XX
PAGE
List of Contributed Experimental Reports
TITLE TEAM PROPOSAL
168 Effect of the environment on thelysozyme dynamics. A quaslelasticneutron scattering study (1)
A. Paciaroni1
A. de Francesco1
L.E. Bove2
M. Marconi1
1Univ. Perugia, I2OGG-INFM, Grenoble, F
V3 BIO-03-0265
169 Effect of the environment on thelysozyme dynamics. A quasielasticneutron scattering study (2)
A. PaciaroniA. de Francesco1
L.E. Bove2
J. Pieper3
1Univ. Perugia, I2OGG-INFM, Grenoble, F3HMI Berlin
V3 BIO-03-0291
170 Dynamics of hydration water in modelmembranes systems
A. Buchsteiner1
J. Pieper1
A. Lerf2
1HMI Berlin2Walther-Meissner-lnst.,Garching
V3 BIO-03-306EF
171 Protein flexibility in photosystem II ofgreen plants
J. Pieper1
R. Lechner1
T. Hau2'1
M.We3
G. Renger3
1HMI Berlin2Univ. Dsseldorf3TU Berlin
V3 EF
172 Molecular recognition ofphosphottponucleosides in direct andreverse micelles
D. Berti1
F. Baldelli Bombelli1
M. Bonini1
A. Brand2
1Univ. Firenze, I2HMI Berlin
V4 BIO-04-0808
173 What makes elastase specific? A. Zychlinsky1
M. IngersollH.N. Bordallo2
T. Hau32
'MPI-IB Berlin2HMI Berlin3Univ. Dsseldorf
V4 BIO-04-0868
174 Large-scale chain conformation in J.-M. Guenet1
stereoregularpolyelectrolyte/protein V. Ball1
complexes U. Keiderling2
1Univ. Strasbourg, F'HMI Berlin
V4 CHE-04-0872
175 The wetting behaviour of hydrophobicpolymer layers
B. Klsgen1
R. Krastev3'24
R. Steitz2'3'4
1Univ. Odense, DK2TU Berlin3MPI-KGF Golm4HMI Berlin
V6 PHY-04-078404-0892
176 Preparation of polymer supportedcharged lipid layers for adsorptionstudy ofA(25-35)
S. Dante1
Th. Hau25
R. Steitz3'4'5
1TU Darmstadt2Univ. Dsseldorf3TU Berlin4MPI-KGF Golm
V6 BIO-04-0850
aHMI Berlin177 Adsorption of globular proteins on a
planar polyelectrolyte brushC. Czeslik1
G. Jackler1
R. Steitz2'3'4
Univ. Dortmund2TU Berlin3MPI-KGF Golm4HMI Berlin
V6 CHE-04-0889
178 Biocomposite planar polyelectrolyte S. Gromelski1
multilayers as a tool to understand R. Krastev1'23
different DNA transport systems
1MPI-KGF Golm2TU Berlin3HMI Berlin
V6 BIO-04-0890
179 Adsorption of amyloid beta (1-40) S. Rocha1
peptide on hydrophobic polymer R. Krastevcovered solid surfaces G. Brezesinski1
,1,2,3
1MPI-KGF Golm2TU Berlin3HMI Berlin
V6 CHE-04-0907LT
180 Adsorption of amyloid beta (1-40) S. Rocha1 1MPI-KGFGolm V6 EF-LTpeptide at hydrophilic polymer R. Krastev123 2TU Berlincovered solid surface G. Brezesinski1 3HMI Berlin
Material Science and Industrial Applications
181 In situ study of non-stoichiometrlcSrFeOx under different oxygen partialpressures
M. Schmidt1
S.J. Campbell2
M. Hofmann3
1ISIS, RAL, UK2Univ. NSW, AU3TU Mnchen
E2 MAT-01-1181
182 Phase transformation in 7U modulated N. Glavatska1
structure in non-stoichiometric Ni-Mn- I. Glavatski12
Ga martenslte J.U.Hoffmann3
1NAS IMP Kiev, UA2HMI Berlin3Univ. Tbingen
E2 MAT-01-1335
XXI
PAGE
List of Contributed Experimental Reports
TITLE TEAM PROPOSAL
183
184
Neutron determination of residualstress In a nhrided notched part
Neutron evaluation of residual stress inindustrial screws
L. BarrallierA. FabreA. GerbelJ. Jeanjean
L. BarrallierA. FabreJ.-E. Masse
ENSAM, F
ENSAM, F
E3
E3
MAT-01-1243
MAT-01-1393
185 Residual stresses in cylinders, -comparison of neutron and X-raydiffraction measurements -continuation for a 20MnCrB casehardenable steel
T. Hirsch1
S. Rocha1
T. Poeste2'3
1Univ. Bremen, IWT2HMI Berlin^"U Berlin
E3 MAT-01-1299
F. Henkel2
R. Schneider2
186 Investigation of the residual stressprofile along the radius of a highlyloaded turbine wheel
R. HessertT. Poeste23
H. Freydank2
R. Schneider2
1MTU Aero Space2HMI Berlin' Berlin
E3 EF
187 Development of the stress profile closeto the Inner surface of an impellerduring the production process
R. Bschen1
T. Poeste2'3
H. Freydank3
R. Schneider3
1MTU Friedrichshafen2TU Berlin3HMI Berlin
E3 EF
188
189
Analysis of residual stresses inAISi7Mg/-SiC/70p MMCs by neutrondiffraction
Misfit measurements on Ni-basesuperalloys
U. Gbel1
H.P. Degischer2
R. Schneider3
T. Poeste3'4
F. Henkel3
P. Lemke3
R. Gilles1
M. Hlzel1'2
D. Mukherji3
D. del Genovese3
P. Strunz4
1 Siemens AG Mnchen2TU Wien3HMI Berlin^ U Berlin
1TU Mnchen2TU Darmstadt3IWF TU Braunschweig4PSI Villigen, CH5HMI Berlin
E7 MAT-01-1240
E9 MAT-01-1341
D. M. Tbbens0
190 Quantitative phase analysis of Portland L Smrcok1
clinkers and the products of their O. Pritula1
chemical decomposition P. M. Tbbens2
1SAS Bratislava, SK2HMI Berlin
E9 MAT-01-1347
191 Neutron diffraction studies of the V. Efimov1
relaxor PLZT 8/85/35 irradiated by high- S. Tyutyunnikov1
current pulsed electron beam V. Sikolenko2
1JINR Dubna, RU2HMI Berlin
E9 PHY-01-1349
192 Chain-end effects on local dynamics inlong chain alkanes
V. Arrighi1
F. Saggio1
H. Qian1
A. Desmedt2
1HWU Edinburgh, UK'HMI Berlin
V3 CHE-03-0204
193 Diffusion of linear alkanes in NaX H. Jobic1
zeolite A. Buchsteiner21CNRS Lyon, F2HMI Berlin
V3 CHE-03-0260
194 Dynamic coupling of cation diffusion D. Wilmer1
and anion reorientation in solid H. Feldmann1
solutions of sodium orthophosphate A. Buchsteiner2
and sodium sulfats
1Univ. Mnster2HMI Berlin
V3 MAT-03-0286
195 Changes in fprecipitate morphology in G.Schumacher1 1HMI Berlin V4 MAT-single crystal superalloy SC16 during P. Strunz2 2PSI Villigen, CH 04-0741thermal treatment
196 Sintering process in LaiZriOi and G. Schumacher1
SrZrO3 ceramics thermal barrier P. Strunz2
coatings R. Vassen3
1HMI Berlin2PSI Villigen, CH3FZ Julien
V4 MAT-04-0796
197 Investigation of cavities mlcrostructurein Y-TZP ceramics using SANS
J. SarounV. Ryukhtin1
S. Harjo2
Y. Motohashi2
A. Wiedenmann3
1ASCR NPI Rez, CZ2lbaraki Univ., JP3HMI Berlin
V4 MAT-04-0750
XXII
PAGE
List of Contributed Experimental Reports
TITLE TEAM PROPOSAL
198 Characterisation of precipitatesinduced by irradiation in reactor vesselsteels
J. Saroun1
0. Muransky1
J. Kocik1
E. Garcia-Matres2
A. Heinemann2
1NPI Rez, CZ2HMI Berlin
V4 MAT-04-0869
199 Polarised SANS investigations of blockcopolyslloxane-complexed cobaltnanoparcles
T. St. Pierre1
L. Harris1
E. Gilbert2
A. Hoell3
1Phy. Dept, UWA, AU2Bragg Institute, AU3HMI Berlin
V4 PHY-04-0761
200 Investigation of the microstructure offerrofluids using small angle neutronscattering
S. OdenbachL PopJ. HilljegerdesA. Muslimayne
Univ. Bremen V4 MAT-04-0798
201 SANS investigations on RPVsteel after A. Ulbricht7
reirradlatlon A. Heinemann21FZ Rossendorf2HMI Berlin
V4 MAT-04-0799
202 Hard magnetic properties of bulkamorphous NdeoFe2oCoioAlio
H. HermannE. Garcia-Matres2
A. Wiedenmann2
1IFW Dresden2HMI Berlin
V4 MAT-04-0800
G. Kumar
203
204
205
206
207
Insitu characterization of precipitationsequence in a modified 706-type Ni-Fesuperalloy
Microstructural evolution ofnanocrystalline Mania during sinteringSANS investigation of precipitationhardening In AA 8016 alloyImpact of ultrasonic agitation ondispersions ofultraflne silica powders,analyzed with time-resolved SANS
Diffusion studies in Intermetallicphases with NSE. L11 structures
J. Eckert1
D. Mukherji1
P. Strunz2
D. del Genovese3
R. Gilles4
M. Winterer1
U. Keiderling2
J. Haug
H. Hahn1
H. Sieger1
U. Keiderling2
A. Wiedenmann2
G. Vogl1
M. Rennhofer1
C. Pappas2
C. Fehr2
1ETH Zrich, CH2PSI Villigen, CH3TU Braunschweig*TU Mnchen1Univ. Duisburg-Essen2HMI BerlinHMI Berlin
1TU Darmstadt2HMI Berlin
1Univ.Wien,A2HMI Berlin
V4
V4
V4
V4
V5
MAT-04-0865
MAT-04-0882EF
EF
PHY-03-0251
208 High flux neutron tomographyinvestigation of a Lil battery
J. Banhart1
I. Manke1
A. Hilger1
N. Kardjilov1
M. Dierik2
B. Masschaele2
1HMI Berlin2Univ. Gent, B
V7 EF
209
210
211
212
Real-time imaging with cold neutrons
SANS investigation of plasticallydeformed stainless steel
Porosity study in Ag-Cu alloyspecimens
Porosity study In Ag-Cu alloyspecimens
N. Kardjilov1
A. Hilger1
M. Dierik2
B. Masschaele2
V.T. Lebedev1
G. Trk2
A. ManescuF. SpinozziF. Fiori
A. ManescuF. SpinozziF. Fiori
1HMI Berlin2Univ. Gent, B
1RAS PNPI Gatchina, RU2RU KFKI Budapest, H
Univ. Ancona, I
Univ. Ancona, I
V7
V12a
V12a
V12a
EF
MAT-04-0819
MAT-04-0820
MAT-04-0820cont.
XXIII
PAGE
List of Contributed Experimental Reports
TITLE TEAM PROPOSAL
Development of Instruments and Methods
213
214
215
216
217
218
219
The influence of an organic phase onthe efficiency of a ceramic neutronimage plate
Diamagnetic signal from Bi singlecrystal (polarization option at E4)
Neutron transmission through apackage of Al and 10B slitsTesting the use of sapphire sampleholders in high-temperature powderdiffractionThe new "BerSANS-PC" dataprocessing softwareInstrumental resolution on V4 afterchanging the detector readout systemDetector efficiency map and dead timecorrection on V4 after changing thedetector readout system
J. Zimmermann1
R. Kolb1
J. Klenke2
S. Danilkin2
K. ProkesV. SikolenkoF. Mezei
J. PetersN. SterD. M. Tbbens
U. Keiderling
A. WiedenmannJ. HaugA. WiedenmannJ. Haug
1TU Darmstadt2HMI Berlin
HMI Berlin
HMI Berlin
HMI Berlin
HMI Berlin
HMI Berlin
HMI Berlin
E1
E4
E6
E9
V4
V4
V4
OTH-02-0384EF
EF
EF
EF
EF
EF
EF
220 Mew front-end electronics and dataacquisition system for SANS detector
Th. Wilpert1
W. Altmann1
J. Haug1
R. Schneider1
G. Montermann2
1HMI Berlin2mesytec gbr, Putzbrunn
V4 EF
221 Larmor precession tomography F. MezeiC. PappasR. Schneider
HMI Berlin V5 EF
222 Neutron spin-echo angle coding R. Pynn1
M. Fitzsimmons1
H. Fritzsche2
J. Major3
1LANL, USA2NRC Chalk River, CA3MPI MF Stuttgart
V6 MAT-04-0854/04-0905
223 Small angle scattering from D2O-treatedanodizedAI wire and ribbon
K. Habicht12
T. Keller34
M. Strobl5
1TU Darmstadt2HMI Berlin3MPI-FKF Stuttgart4FRM II Garching5TFH Berlin
V12 EF
224 USANS studies of artificial lattice M.Strobl,W. Treimer
TFH Berlin V12 EF
225 Inelastic neutron scattering byultrasound - research by bonse hartdiffractometer
E. lolin1
L. Rusevich1
M. Strobl2
W. Treimer2
P. Mikula3
1IPE, Riga2TFH Berlin3NPI, Rez, Prague
PHY-V12 04-0884
a
226 First three dimensional refractioncontrast tomography
M. Strobl2'W. Treimer2
A. Hilger1'2
1HMI Berlin2TFH Berlin
EFV12
a227 Refraction contrast tomographies of
different shaped samplesM. StrobrW. Treimer2
A. Hilger.1,2
1HMI Berlin2TFH Berlin
EFV12
a228 Refraction contrast tomographic
imagingW. Treimer2
M. Strobl2
A. Hilger1'2
C. Seifert2
1HMI Berlin2TFH Berlin
EFV12
a
229 Refraction contrast tomographies insimple Bonse-Hart DCD set-up
M. Strobl2
W. Treimer2
A. Hilger1'2
1HMI Berlin2TFH Berlin
EFV12
b
XXIV
PAGE
List of Contributed Experimental Reports
TITLE TEAM PROPOSAL
230 Test of two Si-wafer based collimators M. StrobrW. Treimer2
T. Krist1
M. Seurig2
1HMI Berlin2TFH Berlin
EF
V12b
231 Spatial resolved USANS measurements M. Strobl1
A. ManescuTFH Berlin2HMI Berlin
EF
V12b
232 Investigation of a focusing parabolicguide by a radiography method
P. Bni1
N. Kardjilov2
A. Hilger23
M. Strobl3
W. Treimer3
1TU Mnchen2HMI Berlin3TFH Berlin
EFV12
b
233 Development of neutron opticalelements
Fundamental Physics and Others
234
235
236
Translational diffusion of Hz in singlewalled carbon nanotubes
Study of the diffusion of molecularhydrogen In nanoporous materials
Molecular dynamics in tryclyinesulphate (TGS)
T. Krist1
J. Hoffmann2
P. Sokol1
D. Narehood1
J. Pieper2
R. Lechner2
P. Sokol1
Y. Glanville1
J. Pieper2
R. Lechner2
V. Tripadus1
J. Pieper2
A. Buchsteiner2
A. Serban1
1HMI Berlin2Univ. Tbingen
Venn State Univ., USA2HMI Berlin
1Penn State Univ.. USA2HMI Berlin
1IFIN-HH Bucharest, RO2HMI Berlin
V14
V3
V3
V3
EF
PHY-03-0269
PHY-03-0297
PHY-03-0293
237 Search for scission neutrons usingangular correlations in fission of U-23S
G.V. DanilyanV.S. Pavlov1
I. Karpikhin1
V. Krakhotin1
A.V. Fedorov1
B. Golub2
E. Korobkina2
D.Fink1
M.Mller1
M.Behar2
M.F.Soarez2
P. Alegaonkar3
1RF SSC ITEP Moscow2HMI Berlin
1HMI Berlin2UFRGS Porto Alegre,
BrazilUniv. Pune, India
V13 PHY-05-005
B7 EF238 Redistribution of ion-implanted eLi*inpolystyrene
239 Autoradlographs from the painting"Armlda abducts the sleeping Rlnaldo(-1037)" by Nicolas Poussin120x150 cm2
C. Laurenze-Landsberg1
C. Schmidt1
L.A. Mertens2
B. Schrder-Smeibidl2
1 Gemldegalerie Berlin(GMB)
2HMI Berlin
B8
240 Autoradiographs from the painting"Valley with Diane and her nymphs "by C. SchmidtJan Tilens (1589-1830),89x156 cm2
C. Laurenze-Landsberg1
LA. Mertens'B. Schrder-Smeibidl2
Gemldegalerie Berlin(GMB)
2HM! Berlin
B8
XXV
PHY-02-0308.doc // brandt // 03.03.04 Seite 1 von 1
EXPERIMENTAL REPORT Proposal N PHY-02-308Instrument E1Spin waves in amorphous and nanocrystalline Fe73.5-
xNixSi13.5Cu1Nb3B9 (x=10 or 30) Local Contact J. Klenke
Principal Proposer: B. Idzikowski, IFM PAN Pozna, Poland Date(s) of ExperimentExperimental Team: T. Krenicky, EF SAV Koice, Slovakia
J. Klenke, HMI, Berlin, GermanyS. Danilkin, HMI, Berlin, Germany
29.1.200310.2.2003
Date of Report: 30.12.2003
Iron based alloys of FINEMET-type are of particularinterest due to their superior magnetic properties(e.g. extremely low coercivity). This nanocrystallinesoft magnetic material can be produced by stoppingthe onset of crystallization of certain amorphousalloys.
The mean field theory does not explain correctlythe local magnetic excitations in amorphousmagnetic materials, which are characterized by theabsence of long-range topological order. A possibleway to determine the value of the spin wavestiffness constant D which follows from the spinwave theory is a detailed analyses of thetemperature behavior of the magnetization in thesematerials [1] but more complex information could beprovided by inelastic neutron scattering experiment.
The amorphous ribbons Fe73.5-xNixSi13.5Cu1Nb3B9 (x=10 or 30) were prepared bysingle-roller technique. Typical dimensions of theribbons are 25 mm of thickness and 10 mm ofwidth. The temperature dependence of magneticbehavior of the samples shows Fig. 1.
0 200 400 600 8000.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
mag
netiz
atio
n [a
. u.]
temperature [C]
Fe63.5Ni10Si13.5Cu1Nb3B9 Fe43.5Ni30Si13.5Cu1Nb3B9
Fig. 1. Magnetization-versus-temperature forFe73.5-xNixSi13.5Cu1Nb3B9 (x=10 or 30)
Amorphous precursors was annealed in vacuumat 400C and 500C for 1 hour in order to produceset of amorphous (as-quenched), relaxedamorphous and nanocrystalline (with small amountof crystalline phase) samples, respectively.
The inelastic neutron scattering spectra weretaken on the E1 triple-axis spectrometer at Hahn-Meitner-Institut Berlin (BENSC) with 40-10-10-10collimation. The q-constant method was used for
searching magnon excitations at temperaturesbetween 105 and 500 K (see Fig.2).
-0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.830
40
50
60
70
80
90
100
q=0.075T = 300 K
Fe43.5Ni30Si13.5Cu1Nb3B9 as-quenched
coun
ts
energy transferFig. 2. Gaussian fits of measured spectrum for
Fe43.5-xNi30Si13.5Cu1Nb3B9 ribbon
For a Heisenberg feromagnet with only nearest-neighbor interactions, the spin-wave dispersion atsmall q is given by q = Dq2. The calculated val-ues of spin wave stiffness constants for the as-quenched Fe63.5Ni10Si13.5Cu1Nb3B9 ribbons atq = 0.075 are listed in upper part of Table 1. Addi-tionally, we observed wide-spreading of the mainpeak with temperature of the sample annealing (lastrow in Table 1).
TABLE 1. The stiffness constants D forFe43.5Ni30Si13.5Cu1Nb3B9 ribbons obtained from the slopeof the dispersion relation curves and mean peak width
D[meV2]Measurement tem-perature [K] as-
quenchedannealed at
400Cannealed at
500C200 113 120 -300 102 110 -400 - 89 109
Energy rangeMean peak width 0.88 0.95 1
In conclusion, partially crystallization of samplesprovide an open area for investigation of the spinwave stiffness constant values in these materials.
References:[1] B. Idzikowski, A. Wrzeciono, J. Kovac; IEEE Trans. Magn.
30 (1997) 561[2] G. Shirane, S.M. Shapiro, J.M. Tranquada: Neutron Scatter-
ing with a Triple-Axis Spectrometer, Cambridge UniversityPress, 2002
1
PHY-02-0397.doc // brandt // 03.03.04 Seite 1 von 1
EXPERIMENTAL REPORT Proposal N PHY-02-397Instrument E1Neutron investigations of Ni3Al itinerant
electron system Local Contact J. Klenke
Principal Proposer: Bogdan Idzikowski, IMF PAS Pozna, Poland Date(s) of ExperimentExperimental Team: Young-Hoon Hyun, Hanyang Univ., Seoul, Korea
Yuri V. Kudryavtsev, Nat. Acad. Sci. Ukraine, KievJens Klenke, HMI, Berlin, Germany
28.10.2003 12.11.2003
Date of Report: 30.12.2003
Ni3Al alloy is a typical weakly-itinerant ferromagnetin which spin fluctuations play an important role.Such ferromagnets are characterized by the exis-tence of the ferromagnetically-ordered regions farabove TC. We have investigated by neutron diffrac-tion magnetic behavior of stoichiometric and off-stoichiometric single crystal and polycrystallinealloys below and above transition temperatures.
It is known that for stoichiometric -phase Ni3Alsingle crystal no high-temperature transition wasobserved. But there is a crossover from spin fluc-tuator to ferromagnet at some small deviations ofthe Ni concentrations in this alloy.
In our investigated alloys Ni0.752Al0.248 andNi0.771Al0.229 the spin fluctuation is unlikely the ex-planation of the existence of the high-temperaturetransition Tm, as well as the low-temperature one TC(see Fig. 1). Thus, the high-temperature kink canbe caused by the transition into a true paramag-netic state. The existence of magnetic inhomoge-neity in the alloy confirmed by the AC magneticsusceptibility measurements in which the suscepti-bility curve exhibits two magnetic transitions, one at87.5 K and the other at 252 K play a key role for thephysical properties.
0 50 100 150 200 250 3000.00
0.01
0.02
0.03
0.04
0.05
0.06
0.07
Tm
Tc
Ni0.77Al0.23
m = 0.08930 ggamma = 8 g/cm3
frequency = 133 HzAC field = 1 Oe
AC s
usce
ptib
ility
[arb
. uni
ts]
Temperature [K]
Fig. 1. Temperature dependence of magneticsusceptibility for NiAl sample.
Three different models explain the existence oftwo transitions temperatures for the off-stoichiometric alloy : (i) Stoner-Edwards-Wohlfarth[1] (ii) the selfconsistent renormalization of the spin-fluctuation [2], and (iii) a modified self-consistentrenormalization of the spin-fluctuation modelutilizing the Ginzburg-Landau formalism [3]. Therewere evidences for the well-defined spin-waveexcitations, obtained by small-angle neutron-scattering [4] and inelastic neutron scattering [5]experiments. However, the influence of magnetic
fields on magnetic behavior can be attributed to anenhancement of the effective electronic mass dueto the spin fluctuations.
38.0 38.5 39.0 39.5 40.0 40.5 41.0
300
600
300
600
250
500
250
500
250
500
Tc > Tm = 10 K
2 degrees
Tc = Tm = 50 K
Tc < Tm = 85 K
Cou
nts/
MO
N50
000
Tc < Tm = 10O K
Tc
EXPERIMENTAL REPORT
Hc2 and magnetism in ErNi2B2C
Proposal N PHY-02-366
Instrument E1
Local Contact
J. Klenke
Date(s) of Experiment
1. 4. - 9. 4. 2003
Principal Proposer: Anette Jensen, University of Copenhagen
Experimental Team: A.B. Abrahamsen, K.N. Toft and N.H. Andersen,Ris National LaboratoryP. Smeibidl and S. Kausche, Hahn-Meitner Institut
Date of Report19. 12. 2003
Magnetism and superconductivity coexist inseveral of the borocarbides RNi2B2C (R = Dy,Ho, Er, Tm) and the interaction between the twostates is often observed as features in the uppercritical field Bc2 due to ordering of the rare earthmoments. We have examined the magnetic or-dering of the R = Er compound and mapped outa set of transitions between spin density waveswith different commensurate wave vectors whena magnetic field is applied along the crystallo-graphic [010] direction of the tetragonal I4/mmmunit cell. The transitions are found to be in-dependent of the upper critical field Bc2 of thesuperconducting state.
Experiment and Results
The critical temperature of the superconductingstate in R = Er is Tc = 11 K and the Er mo-ments order into a transverse spin density wavebelow the Neel temperature TN = 6.8 K in zeroapplied field. Two equally populated magneticdomains are observed and the wave vector isQA = (0.55, 0, 0) or QB = (0, 0.55, 0) with thepolarization along the [010] or [100] direction re-spectively.
Transitions in the majority domain with or-dering vector QA are found when the appliedfield is increased along the [010] direction andthe domain is suppressed at B = 2.2 T andT = 1.8 K as shown on figure 1. The zero fieldstructure with QA = 0.55 rlu is first replaced byQA = 0.572 rlu at B = 0.7 T. The wave vec-tor then reaches the maximum QA = 0.59 rlu atB = 1.1 T, decreases back to QA = 0.58 rlu andfinally stabilizes at QA = 0.572 rlu at B = 1.7 T.The minority domain QB with the moments per-pendicular to the applied field shows no changein wave vector and is suppressed at B = 1.3 T.
The transitions are caused by the locking of
the spin density wave to commensurate struc-tures, which has been explained by a mean fieldmodel[1]. Thus the QA = 0.572 rlu structurehas been suggested to consist of 7 ferromag-netic planes, which are coupled antiferromagnet-ically in the configuration (). The prin-ciple Fourier component of the structure will beQ = 4
7= 0.571 rlu. Similar but more compli-
cated spin-slip structures have been justified bythe mean field model and are indicated by hor-izontal lines in figure 1. A puzzling observationis the lack of hysteresis in the intensity of theminority domain as the applied field is rampeddown. This might be connected to creation offlux lines at the upper critical field Bc2 1.5 T.
0 0.5 1 1.5 2
0.55
0.56
0.57
0.58
0.59
B [T]
Q [r.l.u]
11/2016/29
5/9
4/7
11/1918/3114/24
10/17
16/27
0 0.5 1 1.5 20
0.5
1
1.5
2
2.5
3
3.5
4
4.5Int. intensity [arb. units]
B [T]
B||(010)
T = 1.8 K
Figure 1: Properties of the majority domainQA = (Q, 0, 0) (squares) and minority domain QB =(0, Q, 0) (circles) when the field is applied along the[010] direction. Closed and open symbols representthe field history ramping up and down respectively.Left : Ordering wave vector variation of QA and QB.Right: Integrated intensity variation of QA and QBdomain. The total intensity is shown by the solidline. The non-uniform intensity variation is due toextinction.
[1] J. Jensen, Phys. Rev. B 65, 140514, 2002
3
PHY-02-0385_ EF.doc // brandt // 09.03.04 Seite 1 von 1
EXPERIMENTAL REPORT Proposal N EF*Instrument E1*Magnetism in RbCuCl3 and CsCuCl3Local Contact *
Principal Proposer: N. Ster, U. Schotte, HMI Berlin Date(s) of ExperimentExperimental Team: N.Ster, A.Hoser FZ Jlich/RWTH Aachen *26.5.-4.6.03
12.11.-16.11.0328.11.-2.12.03
Date of Report: 6.12.03*
RbCuCl3 is a frustrated antiferromagnet of theABX3 family. The ordering temperature isabout 19 K and the saturation field amounts to66 Tesla at low temperatures. Similar to ourstudies of CsCuCl3 we wanted to investigatethe field dependence of the magnetic structure.
Our experiments were performed with the E1-spectrometer in a diffracting mode and wehave used the magnet VM1b to apply fields upto 14.5 Tesla. Single crystals were provided byH. Tanaka. The linear dimensions of thecrystals used were in the order of 10 mm.At zero field RbCuCl3 has a magneticpropagation vector of about (0.297 0.297 0) i.e.the moments order ferromagnetically along cwhile the moments are arranged in a helixwithin the ab-plane [1]. First we havemeasured the magnetic satellite reflection as afunction of temperature at zero field and at13.5 Tesla. Fitting a power law behaviourwithin a reduced temperature regiont = (TN-T)/TN 10-1 we obtained a criticalexponent with a value of 0.237(4) and0.265(8) for H = 0 Tesla and H = 13.5 Tesla.The first value of is slightly larger than thereported 0.200(9) in [1]. From our measurements we find a shift in thepropagation vector by 1.5% with temperature(fig. 1). This behaviour is different to thetemperature independence of the propagationobserved for CsCuCl3.In a next step we looked to the field behaviourof the magnetic structure. The field wasapplied parallel and perpendicular to thec-axis. Scans were along (h h 0). Thesemeasurements were performed attemperatures around 2 K and at temperaturesjust below TN. Up to 14 Tesla no additionalsatellite reflections (higher harmonics) couldbe found which would indicate a significantdistortion of the regular spiral. Also the positionin reciprocal space of the satellite was notinfluenced by the field. Only a slight decreasein the peak intensities could be observed.Since the saturation field at low temperatures
is quite large with about 66 Tesla our appliedfields up to 14 Tesla were not sufficient toaffect the magnetic structure significantly.Therefore our field limitation to 14 Tesla doesnot allow to study the change in the magneticstructure even at temperatures close to TN byneutron diffraction.
Fig.1 : temperature behaviour of magneticsatellite measured at zero field.
Beside RbCuCl3 we have further studiedCsCuCl3 and performed a Fourier analysis ofthe field distorted spiral. A typical result of ouranalysis is shown fig.2 showing that orderedmoments are elongated along field directions.In addition spins rotate towards field and spinsin opposite direction spread apart. fig.2:
magnetic spiral of CsCuCl3 in a field of 11.5 Tesla.
[1] M. Reehuis et.at. J. Phys. And Chem. of Solids62 (2001) 1139-1143
1 1 .5 T
0 2 4 6 8 10 12 14 16 18 20
0,292
0,294
0,296
magnetic satellite reflection RbCuCl3
(h h
0)
temperature [K]
4
EF_01_Prokes.doc // brandt // 03.03.04
EXPERIMENTAL REPORT Proposal N EFInstrument E1
Inelastic Studies of UNiAl (2) Local Contact J. Klenke
Principal Proposer: K.Prokes, HMI Berlin Date(s) of ExperimentExperimental Team: K.Prokes, HMI Berlin
26.6.2003-6.7.2003
Date of Report: 7.7.2003
UNiAl forms in the hexagonal ZrNiAltype of structure and orders anti-ferromagnetically (AF) below TN = 19.3 K [1].History-dependent phenomena exist in UNiAl.Two antiferromagnetic steructures arecompeting. The microscopic differencebetween the zero-field AF structure with qold =(0.1 0.1 0.5) and the new one with qnew =(0.173 0 0.5) is that the sine-wave modulationof U moments (in both cases the amplitudeamounts to 1.3 B, moments are directed alongthe c axis and the sample consists from three kdomains) is along the [110] in the former and[100] in the latter case [2]. From V2experiment we have realized that no welldefined magnetic excitations exist in UNiAl.
The crystal (the same as in the case ofV2 study) was placed in the 14.5 T cryomagnetVM1 and investigated on E1 with ratherrelaxed colimation 80'-40'-40' to increaseintensity on account of resolution.
In Fig. 1 we show the contour plots ofthe temperature dependencies of thequasielastic response function measured at thetwo characteristic reflections (old left) atvarious magnetic fields. As can be seen, the oldAF structure remains stable in the wholetemperature range in fields up to ~ 8T. Abovethis field, the new AF structure starts tocompete with the old one and above 11 T itbecomes stable. Note the appearance of the"new" reflection at ~7K upon the field of 11 T(about 4 K lower than the "old" reflectionappears) and gradual disappearance of the"old" reflection at lower temperatures. Thispoints to a slow relaxation phenomena - due tothermal activation. Fact that the old reflectionappears at higher temperature that the new onepoints to existence of second magnetic phasetransition. Interestingly, field of 11 Tcorresponds well with the field above whichthe magnetic phase transition is of the first
orTarenex
R[1MC[231
5
Old 0T
T (K)5 10 15 20 25 30 35
E (m
eV)
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.00 200 400 600 800 1000
New 0T
5 10 15 20 25 30 35-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.00 200 400 600 800 1000
T (K)
E (m
eV)
Old 8T
5 10 15 20 25 30 35
E (m
eV)
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.00 200 400 600 800 1000
New 8T
T (K)5 10 15 20 25 30 35
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.00 200 400 600 800 1000
E (m
eV)
T (K)
Old 11T
T (K)5 10 15 20 25 30 35
E (m
eV)
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.00 200 400 600 800 1000
New 11T
T (K)5 10 15 20 25 30 35
E (m
eV)
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.00 200 400 600 800 1000
Fig. 1: Quasielastic signal measured at the old andnew magnetic reflections at various applied fields(top-zf, middle-8T, bottom-11T) upon cooling. Notesignificant signal around TN (which decreases withfield) and appearance of signal at lower temperaturesin fields above 8T at the new reflection (right).Seite 1 von 1
der type [1]. A significant intensity aroundN suggests that both AF structures competeound TN. This can also explain moderatelyhanced specific heat of UNiAl. See also V2perimental report.
eferences] V. Sechovsky and L. Havela: in Handbook ofagnetic Materials, ed. K.H.J. Buschow, vol. 11,h.1 ]K. Proke, et al. Physica B: Condensed Matter,2-313, (2002), 872
EF_02_Danilkin.doc // brandt // 03.03.04 Seite 1 von 1
EXPERIMENTAL REPORT Proposal N EFInstrument E1Phase transitions in Cu1.25Ag0.25Se Local Contact
Principal Proposer: S. Danilkin Date(s) of ExperimentExperimental Team: S. Danilkin, HMI, SF2
J. Klenke, HMI, SF2 10.07. 11.07.200325.08. 29.08.2003.
Date of Report: 15.01.2003
The temperature of superionic transition inCuxSe depends on composition. It equals to414 K in Cu2Se and lies below room T forcompounds with Cu content x = 1.75 1.85.High - T superionic -phase has an f.c.c.structure with disordered distribution of Cucations. The ordered low - T -phase has acomplicated noncubic structure.
1 2 3 4
0
200
400
600
Inte
nsity
, arb
. uni
ts
Q, A-1
Fig. 1. Diffraction patterns of - Cu1.98Se at RT.Upper curve double crystal scan.Lower curve triple-axis mode, E 0 scan.
Diffraction study of polycrystalline samplesCu2Se [1] reveal the presence of strong diffusescattering, which was attributed to structuraldisorder and correlation between thermaldisplacements of atoms. The relativecontribution of these two parts in diffusebackground could be measured using triple-axis spectrometer in conventional diffractionmode and with analyser crystal fixed to E 0.
In the present experiment we studied thediffuse scattering in polycrystalline samplesCu1.75Se and Cu1.98Se. The cylindrical samples(8.5 and 4.8 g in weight) were prepared bysolid-state reaction of high purity Cu and Sepowders at 720 K. Measurements have beendone with spectrometer E1 at = 2.419 withcollimation 40-40-40-80.
The diffraction patterns of - and - Cu1.98Se are shown in Fig. 1 and 2. Spectrameasured with and without analyser crystal
were normalised to have the same area ofelastic Bragg peaks.
In addition to strong elastic Braggreflections spectra of -Cu1.98Se at RT (Fig. 1)show the presence a number of small coherentpeaks which form the irregular backgroundwith maximum intensity around Q = 3 -1.Different behaviour was observed for the samecompound in -phase (Fig. 2). The smallpeaks smooth out and the strong diffuseinelastic scattering is seen only in the spectrameasured in double crystal mode.
1 2 3 4
0
200
400
Inte
nsity
, arb
. uni
ts
Q, A-1
Fig. 2. Diffraction pattern of - Cu1.98Se at 450 K.Upper curve double crystal scan.Lower curve triple-axis mode, E 0 scan.
This result contradicts with data from Ref. 1which do not show notable difference betweenspectra measured in double crystal and E 0modes of experiment. Probably this is due to anarrower elastic window in our experiment,which cuts off the low-energy excitations. Ourresult shows that diffuse scattering insuperionic phase arises mainly fromcorrelations among the thermal displacementsof the ions. Note that measured diffractionpattern of - Cu1.75Se is very similar to that ofCu1.98Se at 450 K (Fig. 2).
References:
1. Sakuma T, Aoyama T., Takahashi H. ShimotoY. Morii Y., Physica B, 213-214 (1995) 399.
6
PHY-01-1094.doc // brandt // 03.03.04 Seite 1 von 1
EXPERIMENTAL REPORT Proposal N PHY-01-1094Instrument E2Detailed investigation of the magnetic
structures of TbCu2 on a single crystal. Local Contact J.-U. Hoffmann
Principal Proposer: Astrid Schneidewind, MPI-CPfS Dresden Date(s) of ExperimentExperimental Team: Astrid Schneidewind, MPI-CPfS Dresden
Andreas Kreyssig, TU Dresden, IAPDUlrike Witte, TU Dresden, IAPD
30.01.-03.02.2002
Date of Report: 22.12.2002
The magnetic structure of TbCu2 is assumed to becollinear with magnetic moments along the a-directionof the orthorhombic crystal [J. Phys. Soc. Japan 47(1979) 67]. The magnetic unit cell is 3a x b x ccompared to the lattice parameters a, b, c. Thepropagation vector is found to be = (1/3 0 0). At aboutT = 42 K a phase transition commensurate incommensurate is expected with increasingtemperature (Nel temperature TN = 55 K). The magneticbehaviour of TbCu2 was new investigated in the contextof the studies on Tb0.5Dy0.5Cu2 by different methods.Some results of these investigations do not fully agreewith the known magnetic structure. To ascertain how farthe unexplained results are connected with changes ofthe magnetic structure dependent on temperature theneutron scattering experiment on a single crystal wasperformed at E2/BENSC.
Fig.1: Intensities measured in the reciprocal (h0l)-planeat T = 1.6 K.
The experiment was performed with = 0.239 nm usingadditional filters to suppress higher harmonics of . Thescans were taken by rotating the sample and detecting180 of the reciprocal ac- or ab-plane at T = 1.6, 5, 20,42 and 61 K. Reflections belonging to the expectedmagnetic structure have to be found at positions =G (1/3 0 0) and 3 =G (1 0 0) when G is a reciprocallattice vector. For moments directed parallel to amagnetic intensities are forbidden at the (h 0 0)-positions. Fig. 1 shows as an example that magneticintensities belonging to , 2 and 3 were observed at(h 0 0) positions as well as at (h 0 l0) positions in thereciprocal ac-plane. The same result is found in thereciprocal ab-plane. Contamination of 2 and 3 areexcepted by the experiment. Scans around selectedreflections according to the first, second and thirdharmonics of the fundamental wave vector of themagnetic structure were performed depending on thetemperature, using different steps, especially attemperatures 1.6K T 5K.
The results of the experiment show:
The additional phase transition observed bymagnetization measurements at T = 2.3 K is notconnected with changes in the magnetic orcrystalline structure.
It has to be accepted that there exists a component ofthe magnetic moment perpendicular to thecrystalline a-direction. In addition, the reflectionsbelonging to 2 do not agree with the knownmagnetic structure of TbCu2. Thus the magneticstructure described by Hashimoto et al. [J. Phys.Soc. Japan 47 (1979) 67] has to be extended bysome details.
There is no indication for an incommensuratemagnetic structure in TbCu2. The postions ofreflections belonging to do not change withtemperature within the experimental error. Thephase transition at about T = 42 K is connected withthe vanishing of the reflections according to higherharmonics, i. e. the character of the magneticstructure changes from a squared up structure to asinusoidal structure.
7
PHY-01-1095+1249.doc // Kreyssig // 16.03.04 Seite 1 von 2
EXPERIMENTAL REPORT Proposal N PHY-01-1095 PHY-01-1249Instrument E2Magnetic order and diffuse scattering in
RNi2B2C Local ContactJens-Uwe Hoffmann
Principal Proposer: Andreas Kreyssig Date(s) of ExperimentExperimental T