Single- and multi-filamentary Fe-sheathed MgB2 wires

被引：30

作者：

Zhou, SH ^{[1
]}

Pan, AV ^{[1
]}

Liu, HK ^{[1
]}

Dou, SX ^{[1
]}

机构：

[1] Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2002年 / 382卷 / 04期

基金：

澳大利亚研究理事会;

关键词：

magnesium diboride; superconducting wires; critical current;

D O I：

10.1016/S0921-4534(02)01998-6

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A novel method is proposed to increase the MgB2 core density and, as a consequence, the critical current density of Fe-sheathed MgB2 wires. This method involves two additional stages compared to the usual wire fabrication: post-annealing mechanical deformation and a consecutive heat-treatment. Using this method we obtained denser core structures in 7-filament wire having J(c) values larger by a factor of about 4.3 than that found in the initial "in situ" prepared mono-core wire. Independent of the manufacturing procedure, the wires showed a transport property degradation effect after being exposed to the air for 4 months. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：349 / 354

页数：6

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