10

100

1,000

10,000

100,000

0 5 10 15 20 25Applied Field, T

Critical CurrentDensity (4.2 K), A/mm²

2212 round wire

2223tape B|_

1.8 KNb-Ti

Nb3Sn Internal Sn

NbTi

2223tape B||

Nb3Sn

ITERBronze

Nb3Al: ITER TF

MgB2

+SiC

YBCO microbridge H

YBCO microbridge H||c YBCO CC H|| c

1.8 K

Nb3Al: RHQT+Cu

||ab 75 K

30

YBCO: CC in Pancake Coils (American Superconductor)ASC'04 (Je 200 A/mm² at 24 T, 0.1 µV/cm)

YBCO : /Ni/YSZ ~1 µm thick microbridge, H|| c 4 K, Foltyn et al. (LANL) '96

YBCO : /Ni/YSZ ~1 µm thick microbridge , H||ab 75 K,Foltyn et al. (LANL) '96

Nb-Ti: Example of Best Industrial Scale Heat TreatedComposites ~1990 (compilation)

Nb-Ti: Nb-47wt%Ti, 1.8 K, Lee , Naus and LarbalestierUW-ASC'96

Nb3Sn: Bronze route int. stab. -VAC-HP, non-(Cu+Ta) Jc,Thoener et al., Erice '96.

Nb3Sn: Non-Cu Jc Internal Sn OI-ST RRP #6555-A,0.8 mm, LTSW 2002

Nb3Sn : Non-Cu Jc Internal Sn OI -ST RRP 1.3 mm,ASC'02/ICMC'03

Nb3Sn : 1.8 K Non-Cu Jc Internal Sn OI -ST RRP ASC'02/ICMC'03

Nb3Al: JAERI strand for ITER TF model coil

Nb3Al: RQHT+2 At.% Cu, 0.4m/s (Iijima et al 2002)

Bi-2212: non-Ag Jc, 427 fil. round wire, Ag/SC=3(Hasegawa ASC-2000/MT17-2001)

Bi 2223: Rolled 85 Fil. Tape (AmSC) B||, UW'6/96

Bi 2223: Rolled 85 Fil. Tape (AmSC) B|_, UW'6/96

MgB2: 10%-wt SiC doped (Dou et al APL 2002, UWmeasurements)