期刊
APPLIED PHYSICS LETTERS
卷 95, 期 6, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3204457
关键词
critical current density (superconductivity); diamagnetism; high-temperature superconductors; iron compounds; magnetisation; pulsed laser deposition; strontium compounds; superconducting critical field; superconducting thin films; superconducting transition temperature
资金
- Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government [MEST, R01-2008-000-20586-0]
The remarkably high superconducting transition temperature and upper critical field of iron (Fe)-based layered superconductors, despite ferromagnetic material base, open the prospect for superconducting electronics. However, success in superconducting electronics has been limited because of difficulties in fabricating high-quality thin films. We report the growth of high-quality c-axis-oriented cobalt (Co)-doped SrFe2As2 thin films with bulk superconductivity by using an in situ pulsed laser deposition technique with a 248 nm wavelength KrF excimer laser and an arsenic (As)-rich phase target. The temperature and field dependences of the magnetization showing strong diamagnetism and transport critical current density with superior J(c)-H performance are reported. These results provide necessary information for practical applications of Fe-based superconductors.
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