Disorder and flux pinning in superconducting pnictide single crystals

Van der Beek, C. J.*; Rizza, G.*; Konczykowski, M.*; Fertey, P.*; Monnet, I.*; Okazaki, Ryuji*; Kato, Tomonari*; Hashimoto, Kenichiro*; Shimozawa, Masaaki*; Shishido, Hiroaki*; Yamashita, Minoru*; Ishikado, Motoyuki; Kito, Hijiri*; Iyo, Akira*; Eisaki, Hiroshi*; Shamoto, Shinichi ; Shibauchi, Takasada*; Matsuda, Yuji*

Crystalline disorder in the pnictide superconductor PrFeAsO $_{1-x}$ is studied using magneto-optical visualisation of flux penetration, transmission electron microscopy, and X-ray diffraction using synchrotron radiation. Critical-state like flux distributions and the magnitude and temperature dependence of the critical current demonstrate bulk vortex pinning by oxygen vacancies at all temperatures.

Language	:	English
Journal	:	Physica C
Volume	:	470
Number	:	Suppl.1
Pages	:	p.S385 - S386
Publication Year/Month	:	2010/12
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Paper URL	:	https://doi.org/10.1016/j.physc.2009.11.089
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Keywords	:	no keyword
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Article of JAEA R&D Review	:
Cooperating Institute	:	科学技術振興機構

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Registration No. : AA20110043
JAEA Abstracts No. :
Paper Submission No. : 12666

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