Superconductivity of powder-in-tube Sr0.6K0.4Fe2As2 wires

被引:61
|
作者
Qi, Yanpeng [1 ]
Zhang, Xianping [1 ]
Gao, Zhaoshun [1 ]
Zhang, Zhiyu [1 ]
Wang, Lei [1 ]
Wang, Dongliang [1 ]
Ma, Yanwei [1 ]
机构
[1] Chinese Acad Sci, Key Lab Appl Superconduct, Inst Elect Engn, Beijing 100190, Peoples R China
来源
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2009年 / 469卷 / 13期
关键词
iron-based superconductor; Superconducting wire;
D O I
10.1016/j.physc.2009.03.008
中图分类号
O59 [应用物理学];
学科分类号
摘要
Nb-sheathed Sr0.6K0.4Fe2As2 superconducting wires have been fabricated using the powder-in-tube (PIT) method for the first time and the superconducting properties of the wires have been investigated. The transition temperature (T-c) of the Sr0.6K0.4Fe2As2 wires is confirmed to be as high as 35.3 K. Most importantly, Sr0.6K0.4Fe2As2 wires exhibit a very weak J(c)-field dependence behavior even the temperature is very close to T-c. The upper critical field H-c2(0) value can exceed 140T, surpassing those of MgB2 and all the low temperature superconductors. Such high H-c2 and superior J(c)-field performance make the 122 phase SrKFeAs wire conductors a powerful competitor potentially useful in very high field applications. (c) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:717 / 720
页数:4
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