Biaxially textured cobalt-doped BaFe2As2 films with high critical current density over 1 MA/cm2 on MgO-buffered metal-tape flexible substrates

被引：98

作者：

Katase, Takayoshi ^{[1
]}

Hiramatsu, Hidenori ^{[1
]}

Matias, Vladimir ^{[2
]}

Sheehan, Chris ^{[2
]}

Ishimaru, Yoshihiro ^{[3
]}

Kamiya, Toshio ^{[1
]}

Tanabe, Keiichi ^{[3
]}

Hosono, Hideo ^{[1
,4
]}

机构：

[1] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 268503, Japan

[2] Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA

[3] Int Superconduct Technol Ctr, Superconduct Res Lab, Koto Ku, Tokyo 1350062, Japan

[4] Tokyo Inst Technol, Frontier Res Ctr, Midori Ku, Yokohama, Kanagawa 2268503, Japan

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 24期

基金：

日本学术振兴会;

关键词：

BEAM-ASSISTED DEPOSITION; THIN-FILMS; SUPERCONDUCTIVITY; FABRICATION;

D O I：

10.1063/1.3599844

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

High critical current densities (J(c)) > 1 MA/cm(2) were realized in cobalt-doped BaFe2As2 (BaFe2As2:Co) films on flexible metal substrates with biaxially textured MgO base-layers fabricated by an ion-beam assisted deposition technique. The BaFe2As2:Co films showed small in-plane crystalline misorientations (Delta phi(BaFe2As2:Co)) of similar to 3 degrees regardless of twice larger misorientations of the MgO base-layers (Delta phi(MgO)=7.3 degrees), and exhibited high self-field J(c) up to 3.5 MA/cm(2) at 2 K. These values are comparable to that on MgO single crystals and the highest J(c) among iron pnictide superconducting tapes and wires ever reported. High in-field J(c) suggests the existence of c-axis correlated vortex pinning centers. (C) 2011 American Institute of Physics. [doi:10.1063/1.3599844]

引用

页数：3

共 30 条

[1] Pseudoisotropic Upper Critical Field in Cobalt-Doped SrFe2As2 Epitaxial Films [J].