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UNIVERSITÀ DEGLI STUDI DI PADOVA FACOLTÀ DI SCIENZE MM.FF.NN. Corso di Laurea in Scienza dei Materiali TESI DI LAUREA APPLICABILITÀ DELLA TECNICA DI SPUTTERING ALLA DEPOSIZIONE DI FILM SOTTILI DI DIBORURO DI MAGNESIO Relatore: Prof. V. Palmieri Candidato: Federico Della Ricca N° matr.: 411569/MT Anno Accademico 2001/02

F. Della Ricca completa

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UNIVERSITÀ DEGLI STUDI DI PADOVA

FACOLTÀ DI SCIENZE MM.FF.NN.

Corso di Laurea in Scienza dei Materiali

TESI DI LAUREA

APPLICABILITÀ DELLA TECNICA DI SPUTTERING ALLA

DEPOSIZIONE DI FILM SOTTILI

DI DIBORURO DI MAGNESIO

Relatore: Prof. V. Palmieri

Candidato: Federico Della Ricca

N° matr.: 411569/MT

Anno Accademico 2001/02

Page 2: F. Della Ricca completa

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Q:R yzcZ]t\:^'abW5motabkBm^'cnw]abw|Y[ctum1v/ ¢

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iLmoZ[motcpY[Z]a%Z]cpY[abk\FnmoZ]a m ­#R yF­FxF W't"'k ­#R ­Fy;FQ/cW'w]aTYrqY[c\FZ]abkBm

ρ = 2.55gr/cm3cW'w]aTYrq~^'cal\FZ|Yrm/Y[\FZ]anS(300K) = 1.7 ÷ 2.8 × 1023buche/cm3

"cpY]Y[\abw]\oY[\Fl'abk\αT = αB + αMg = 0.3 + 0.02cw]abw|Y[aT:aTYrq:abkabW'\~m

Tc ρ(40K) = 0.4 ÷ 16µΩcm*mol'l\FZ|Y[\~Z]cw]abw|Y[aT:aTYrq Z]cw]ab^'_5mRRR = ρ(40k)/ρ(300K) = 1 ÷ 27 _'W'v 'c``ce^'ak\:cZ]cW'`Bmξa = 3.7 ÷ 12nm

"ξc = 1.6 ÷ 3.6nm _'W'v 'c``Bm^'a%lcW'cpY[Z[mo`ab\FW'c

λ(0) = 85 ÷ 180nm<fmoldcW'cZ]vFcpY[abk\∆(0) = 1.8 ÷ 75meVzctlcZ[m/Y[_'Z[m^'acs=1FcΘD = 750 ÷ 880KcW'w]aTYrq~^'ak\FZ]Z]cW;Y[cfkZ]aTY[abkBmJc(4.2, 0T ) > 107A/cm2

Jc(4.2, 4T ) = 106A/cm2

Jc(4.2, 10T ) > 105A/cm2

Jc(25, 0T ) > 5 × 106A/cm2

Jc(25, 2T ) > 105A/cm2

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