INFLUENCE OF THERMOMECHANICAL TREATMENT ON CRITICAL CURRENTS IN AG-SHEATHED BSCCO-2223 TAPES

被引：11

作者：

BRAUER, DJ ^{[1
]}

BUSCH, D ^{[1
]}

EUJEN, R ^{[1
]}

GLADUN, A ^{[1
]}

HUDEPOHL, J ^{[1
]}

机构：

[1] UNIV GESAMTHSCH WUPPERTAL,FACHBEREICH 8 9,W-5600 WUPPERTAL 1,GERMANY

来源：

CRYOGENICS | 1992年 / 32卷 / 11期

关键词：

SUPERCONDUCTORS; CRITICAL CURRENT DENSITIES; BI(PB)-2223 TAPES;

D O I：

10.1016/0011-2275(92)90026-7

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

BSCCO-2223 tapes have been produced by the 'powder-in-tube' method with reproducible critical current densities of > 1 X 10(4) A CM-2 at 77 K and 5 x 10(4) A CM-2 at 4.2 K. Superconductivity at 77 K was retained in fields of up to 7 T. The influence of mechanical treatments (e.g. drawing, rolling and pressing) as well as that of different annealing processes has been investigated. In addition to the determination of critical currents, a.c. shielding measurements have been used to verify the quality of intergrain contacts. The temperature dependence of j(c) between 4.2 and 80 K has been studied while the field (H parallel-to c; H perpendicular-to c with H parallel-to or perpendicular-to /) was varied from 0 to 8 T.

引用

页码：1052 / 1055

页数：4

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