MICROSTRUCTURE AND CRITICAL CURRENT-DENSITY OF ZONE MELT TEXTURED YBA2CU3O6+X/Y2BACUO5 WITH BASNO3 ADDITIONS

被引：67

作者：

MCGINN, P

CHEN, W

ZHU, N

TAN, L

VARANASI, C

SENGUPTA, S

机构：

[1] Department of Electrical Engineering, University of Notre Dame, Notre Dame

来源：

APPLIED PHYSICS LETTERS | 1991年 / 59卷 / 01期

关键词：

BULK YBA2CU3OX SUPERCONDUCTOR; CU-O SUPERCONDUCTOR; OXIDE SUPERCONDUCTORS; GROWTH; WIRES; JC;

D O I：

10.1063/1.105548

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Additions of BaSnO3 have been made to YBa2CU3O6 + x/Y2BaCuO5 composite wires to examine its potential for improving solidification processing and enhancing pinning. Zone melting has been used to produce texture in extruded YBa2CU3O6 + x (Y-123) wires with Y2BaCuO5(211) and BaSnO3 additions. BaSnO3 additions markedly improve the magnetization properties over similarly textured Y-123 or Y-123 + 211 wires in low fields, but do not show a noticeable improvement at higher fields ( > 2 T). Microstructural effects of BaSnO3 include the growth of much larger Y-123 grains, and a substantial reduction in size of 211 precipitates. Magnetic critical current densities (J(c)) in excess of 1.2 X 1O(5) A/cm2 in zero field, and 3.0 X 10(4) A/cm2 at 1 T are observed.

引用

页码：120 / 122

页数：3

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