ORIENTATION AND THERMAL CYCLING EFFECTS ON THE CRITICAL CURRENTS OF HIGH-TC SUPERCONDUCTING COMPOSITES

被引：8

作者：

JENKINS, RG ^{[1
]}

JONES, H ^{[1
]}

BELENLI, I ^{[1
]}

YANG, M ^{[1
]}

GORINGE, MJ ^{[1
]}

GROVENOR, CRM ^{[1
]}

机构：

[1] UNIV OXFORD,DEPT MAT,OXFORD OX1 3PH,ENGLAND

来源：

CRYOGENICS | 1993年 / 33卷 / 01期

关键词：

BI-PB-SR-CA-CU-O; ANISOTROPY; THERMAL CYCLING;

D O I：

10.1016/0011-2275(93)90081-X

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Transport critical currents of short lengths of high T(c) superconducting composite tapes have been measured as a function of magnetic field applied parallel to and perpendicular to the tape surface. Anisotropy factors have been calculated from the results on a number of samples, differing only in their final annealing temperatures, and show great similarity for samples whose critical current densities vary widely. We explain these results in terms of the different microstructures of the samples. We discuss n values and present some data on Ag magnetoresistance. Mechanisms leading to a degradation in J(c) as a result of thermal cycling are described along with possible solutions.

引用

页码：81 / 85

页数：5

共 5 条

[1]

Clark R. G., 1986, Proceedings of the Eleventh International Cryogenic Engineering Conference. ICEC 11, P414

[2]

EKIN JW, 1987, ADV CERAM MATER, V2, P586

[3] HIGH-FIELD CRITICAL CURRENT DENSITIES IN BI2SR2CA1CU2O8+X/AG WIRES [J].