THE MAGNETIC AND TRANSPORT-PROPERTIES OF HIGH-CRITICAL-CURRENT TL2BA2CA2CU3OX SUPERCONDUCTING THIN-FILMS

被引：24

作者：

CHU, ML ^{[1
]}

CHANG, HL ^{[1
]}

WANG, C ^{[1
]}

JUANG, JY ^{[1
]}

UEN, TM ^{[1
]}

GOU, YS ^{[1
]}

机构：

[1] NATL CHIAO TUNG UNIV,INST ELECTROOPT ENGN,HSINCHU,TAIWAN

来源：

APPLIED PHYSICS LETTERS | 1991年 / 59卷 / 09期

关键词：

D O I：

10.1063/1.106364

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Highly c-axis-oriented Tl2Ba2Ca2Cu3O(x) superconducting thin films with the critical current density as high as 1 X 10(7) A/cm2 at 87 K were obtained by single-target dc sputtering on LaAlO3 (100) substrates followed by encapsulated compensate annealing. The strong linear temperature dependence of zero-field critical current at low temperatures suggests a creep-dominated behavior. Preliminary field dependence studies on the critical current density in low-field regime (< 2 kOe) shows no evidence of hysteresis commonly encountered in films with higher granularity. The scaling behavior of the global pinning force density exhibits strong resemblance to conventional type-II superconductors with the pinning force density of the same order of magnitude as that in strong pinned NbN thin films.

引用

页码：1123 / 1125

页数：3

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