Effects of high-pressure annealing on critical current density in 1 2 2 type iron pnictide wires

被引：6

作者：

Pyon, Sunseng ^{[1
]}

Tsuchiya, Yuji ^{[1
]}

Inoue, Hiroshi ^{[1
]}

Koizumi, Norikiyo ^{[2
]}

Kajitani, Hideki ^{[2
]}

Tamegai, Tsuyoshi ^{[1
]}

机构：

[1] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

[2] Japan Atom Energy Agcy, Fus Res & Dev Directorate, Ibaraki 3191195, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2014年 / 504卷

基金：

日本学术振兴会;

关键词：

(AE; K)Fe2As2; (AE:; Ba; Sr); Superconducting wires; Powder-in-tube (PIT); Hot isostatic pressing (HIP); Critical current density; Magneto-optical imaging; TAPES;

D O I：

10.1016/j.physc.2014.03.008

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have fabricated (Ba,K)Fe2As2 and (Sr,K)Fe2As2 superconducting wires through an powder-in-tube (PIT) method using hot isostatic pressing (HIP) technique. The transport critical current densities (J(c)) have reached 37 kA/cm(2) and 48 kA/cm(2) under self-field, and 3.0 kA/cm(2) and 1.8 kA/cm(2) under magnetic field of 90 kOe, at 4.2 K in the (Ba,K)Fe2As2 and (Sr,K)Fe2As2 wire, respectively. Magneto-optical (MO) imaging of the wires confirmed the large intergranular J(c) in the wire core due to the improvement of couplings between superconducting grains by high-pressure annealing. (c) 2014 Elsevier B.V. All rights reserved.

引用

页码：69 / 72

页数：4

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