Large transport critical currents across boundaries in artificially joined large-grain YBCO

被引：10

作者：

Bradley, AD ^{[1
]}

Doyle, RA ^{[1
]}

Lo, W ^{[1
]}

Cardwell, DA ^{[1
]}

Campbell, AM ^{[1
]}

机构：

[1] Univ Cambridge, Interdisciplinary Res Ctr Superconduct, Cambridge CB3 0HE, England

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1999年 / 12卷 / 12期

关键词：

D O I：

10.1088/0953-2048/12/12/304

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Large-grain melt-processed YBCO has been joined to create nominally 'zero-angle' grain boundaries. Similar broadening of the resistive transition in both grains and the artificial boundary is observed in transport measurements up to 7 T. Direct and pulsed currents are used to obtain the high-field voltage-current characteristics which display power-law behaviour. The temperature and field dependence of the critical current in the boundary compares well with that of the grain material. The large critical current densities, above 2000 A cm(-2) at 77 K for 4 T parallel to c-axis, show great promise for the joining technology to produce large-scale engineering artefacts.

引用

页码：1054 / 1058

页数：5

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