MECHANISMS CONTROLLING THE INSITU FORMATION AND SUPERCONDUCTING PROPERTIES OF BI-SR-CA-CU-O FILMS

被引：7

作者：

KAMPWIRTH, RT ^{[1
]}

GRACE, JM ^{[1
]}

MILLER, DJ ^{[1
]}

MCDONALD, DB ^{[1
]}

GRAY, KE ^{[1
]}

REITEN, M ^{[1
]}

ASCOLESE, M ^{[1
]}

LATVAKOSKI, H ^{[1
]}

机构：

[1] ARGONNE NATL LAB,SCI & TECHNOL CTR SUPERCONDUCT,ARGONNE,IL 60439

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1991年 / 27卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1109/20.133405

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have previously shown3,6 that sputtered films of Bi2Sr2CaCu2O(x) (BSCCO) deposited onto single crystal MgO substrates held at substrate temperatures, T(s), near 700-degrees-C and slowly cooled in oxygen, from High Temperature Superconducting (HTS) films with T(czero) between 50 and 70K. The conditions necessary to achieve superconductivity include having close to stoichiometric composition at the T(s) required to form the superconductor. Both T(czero) and c-axis orientation increase with T(s) while the relative bismuth content decreases. Bismuth film content is affected by the type and amount of oxidant, total system pressure, target-to-substrate spacing, and substrate bias. We suggest oxygen resputtering of the film may play a role similar to that reported for YBa2Cu3O7-x (YBCO). Oxygen partial pressure during and cooldown rate from T(s) to approximately-350-degrees-C also affects the superconducting properties.

引用

页码：1219 / 1222

页数：4

共 8 条

[1] INSITU EPITAXIAL-GROWTH OF BI2(SR,CA)3CU2OX FILMS BY ION-BEAM SPUTTERING WITH AN ATOMIC OXYGEN SOURCE [J].

FUJITA, J ;

YOSHITAKE, T ;

IGARASHI, H ;

SATOH, T .

APPLIED PHYSICS LETTERS, 1990, 56 (03) :295-297

[2] PROPERTIES OF SPUTTERED SUPERCONDUCTING FILMS OF BI2SR2CACU2OX MADE BY LOW-TEMPERATURE INSITU GROWTH [J].

KAMPWIRTH, RT ;

ANDERSEN, PH ;

MCDONALD, DB ;

MILLER, DJ ;

GRAY, KE ;

SUNGAILA, ZF ;

BALACHANDRAN, U ;

WAGNER, A .

APPLIED PHYSICS LETTERS, 1989, 55 (20) :2135-2137

[3]

KAMPWIRTH RT, 1991, IN PRESS 2ND P COL C

[4] HIGH CRITICAL-FIELD ANISOTROPY OF SUPERCONDUCTING BI-SR-CA-CU OXIDE FROM HIGHLY ORIENTED THIN-FILMS [J].

KANG, JH ;

KAMPWIRTH, RT ;

GRAY, KE .

APPLIED PHYSICS LETTERS, 1988, 52 (24) :2080-2082

[5] LARGE ANISOTROPY IN THE UPPER CRITICAL-FIELD OF SPUTTERED THIN-FILMS OF SUPERCONDUCTING TL-BA-CA-CU-O [J].

KANG, JH ;

GRAY, KE ;

KAMPWIRTH, RT ;

DAY, DW .

APPLIED PHYSICS LETTERS, 1988, 53 (25) :2560-2562

[6] AS-GROWN CRYSTALLIZED THIN-FILM OF BI-SR-CA-CU-O AND ITS LOW-TEMPERATURE ANNEALING EFFECT [J].

MIURA, S ;

NAKAI, A ;

SHIMAKAWA, Y ;

YOSHITAKE, T ;

MIYASAKA, Y ;

SHOHATA, N ;

SATOH, T .

APPLIED PHYSICS LETTERS, 1989, 54 (15) :1474-1476

[7] MOLECULAR-BEAM EPITAXIAL-GROWTH OF LAYERED BI-SR-CA-CU-O COMPOUNDS [J].

SCHLOM, DG ;

MARSHALL, AF ;

SIZEMORE, JT ;

CHEN, ZJ ;

ECKSTEIN, JN ;

BOZOVIC, I ;

VONDESSONNECK, KE ;

HARRIS, JS ;

BRAVMAN, JC .

JOURNAL OF CRYSTAL GROWTH, 1990, 102 (03) :361-375

[8]

1991, IN PRESS 2ND P COL C

← 1 →