Critical current of high Tc superconducting Bi2223/Ag tapes

被引：10

作者：

Huang, YK ^{[1
]}

ten Haken, B ^{[1
]}

ten Kate, HHJ ^{[1
]}

机构：

[1] Univ Twente, Fac Appl Phys, Low Temp Div, NL-7500 AE Enschede, Netherlands

来源：

PHYSICA C | 1998年 / 309卷 / 3-4期

关键词：

critical current; weak links; flux pinning;

D O I：

10.1016/S0921-4534(98)00608-X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetic field dependence of the critical current of various high T-c superconducting Bi2223/Ag tapes indicates that the transport current is carried through two paths: one is through weakly-linked grain boundaries (Josephson junctions); another is through well-connected grains. The critical current flowing through the weakly-linked grain boundaries, I-Cw, can be characterized by the Fraunhofer-pattern, taking into account the distribution of junction dimension in the tapes. The critical current along the path of well-connected grains, I-Cs, is a complex exponential function of the applied field depending on the pinning strength in the grains. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：197 / 202

页数：6

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