Critical temperature and critical current density of hydrogen-doped SmFeAsO epitaxial films fabricated by thermal annealing with binary hydrides

被引：5

作者：

Hiramatsu, Hidenori ^{[1
,2
]}

Matsumoto, Jumpei ^{[1
]}

Hosono, Hideo ^{[2
]}

机构：

[1] Tokyo Inst Technol, Inst Innovat Res, Lab Mat & Struct, Midori Ku, Mailbox R3-3,4259 Nagatsuta Cho, Yokohama, Kanagawa 2268503, Japan

[2] Tokyo Inst Technol, Mat Res Ctr Element Strategy, Midori Ku, Mailbox SE-1,4259 Nagatsuta Cho, Yokohama, Kanagawa 2268503, Japan

来源：

APPLIED PHYSICS EXPRESS | 2020年 / 13卷 / 07期

关键词：

Fe-based superconductors; thin films; hydrogen; SUPERCONDUCTOR;

D O I：

10.35848/1882-0786/ab998f

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Four kinds of binary hydrides (MgH2, CaH2, SrH2, and BaH2) were added to evacuated silica-glass ampules containing undoped SmFeAsO epitaxial films. Post-deposition thermal annealing was performed to dope hydrogen into the films. The annealing temperature was optimized for each hydride. Critical temperatures of >40 K and critical current densities (J(c)) >= similar to 1 MA cm(-2)at 2 K and a self-field were observed in the hydrogen-doped films annealed with CaH2, SrH2, and BaH2. This result would lead to acceleration of biaxially textured coated conductor researches on hydrogen-doped SmFeAsO exhibiting high-J(c)performance for high-field magnet application.

引用

页数：5

共 16 条

[11] Superconductivity at 55 K in iron-based F-doped layered quaternary compound Sm[O1-xFx] FeAs
National Laboratory for Superconductivity, Institute of Physics, Chinese Academy of Sciences, PO Box 603, Beijing 100190, China
[J]. Chin. Phys. Lett., 2008, 6 (2215-2216): : 2215 - 2216
[12] Recent progress in thin-film growth of Fe-based superconductors: superior superconductivity achieved by thin films
Sakoda, Masahito
Iida, Kazumasa
Naito, Michio
[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2018, 31 (09)
[13] Potentials of iron-based superconductors for practical future materials
Shimoyama, Jun-ichi
[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2014, 27 (04)
[14] High-Tc and high-Jc SmFeAs(O,F) films on fluoride substrates grown by molecular beam epitaxy
Ueda, Shinya
Takeda, Soichiro
Takano, Shiro
Yamamoto, Akiyasu
Naito, Michio
[J]. APPLIED PHYSICS LETTERS, 2011, 99 (23)
[15] Recent breakthrough development in iron-based superconducting wires for practical applications
Yao, Chao
Ma, Yanwei
[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2019, 32 (02)
[16] Single crystals of superconducting SmFeAsO1-xFy grown at high pressure
Zhigadlo, N. D.
Katrych, S.
Bukowski, Z.
Weyeneth, S.
Puzniak, R.
Karpinski, J.
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2008, 20 (34)

← 1 2 →