Superconductivity of powder-in-tube Sr0.6K0.4Fe2As2 wires
Superconductivity of powder-in-tube Sr0.6K0.4Fe2As2 wires
复制标题
管内粉Sr0.6K0.4Fe2As2线材的超导性能
DOI：
10.1016/j.physc.2009.03.008
复制
发表时间：
2009-07-01
影响因子：
1.7
通讯作者：
Ma, Yanwei
中科院分区：
文献类型：
--
作者：
Qi, Yanpeng;Zhang, Xianping;Ma, Yanwei
首次采用粉末套管法（PIT）制备了Nb包覆的Sr_（0.6）K_（0.4）Fe_2As_2超导线材，并对其超导性能进行了研究。Sr_（0.6）K_（0.4）Fe_（2As）_2丝材的相变温度（Tc）高达35.3K。最重要的是，Sr 0.6K 0.4Fe 2As 2线表现出非常弱的J（c）场依赖行为，即使温度非常接近T-c。上临界场H-c ~ 2（0）值可超过140 T，超过了MgB_2和所有低温超导体。如此高的H-c2和上级J（c）场性能使得122相SrKFeAs线导体成为在非常高的场应用中潜在有用的强有力的竞争者。(c)2009爱思唯尔有限公司版权所有。
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.