INCREASED PINNING IN BI2SR2CACU2O8 CERAMICS

被引：12

作者：

MAJEWSKI, P ^{[1
]}

HETTICH, B ^{[1
]}

ELSCHNER, S ^{[1
]}

ALDINGER, F ^{[1
]}

机构：

[1] HOECHST AG,CORP RES,D-65926 FRANKFURT,GERMANY

来源：

APPLIED SUPERCONDUCTIVITY | 1994年 / 2卷 / 02期

关键词：

D O I：

10.1016/0964-1807(94)90025-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

From a consideration of the phase equilibrium diagram of the system Bi2O3-SrO-CaO-CuO, a simple annealing procedure was developed to transform single phase 2212 ceramics with compositions Bi2.18Sr1.75Ca1.25Cu2O8+d and Bi2.3Sr2CaCu2O8+d into multi phase samples containing Ca2CuO3 and/or liquid. The transformations result in increases of the critical current densities at 1 T of 5-10 times, which is believed to reflect the increased pinning properties of these ceramics. The exact nature of the resulting pinning centres has not been determined yet.

引用

页码：93 / 99

页数：7

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