Local structure study of the iron-based systems of BaFeAs and LiFeAs by X-ray PDF and XAFS analyses

Li, S.*; Toyoda, Masayuki*; Kobayashi, Yoshiaki*; Ito, Masayuki*; Ikeuchi, Kazuhiko*; Yoneda, Yasuhiro ; Otani, Akira*; Matsumura, Daiju ; Asano, Shun*; Mizuki, Junichiro*; Sato, Masatoshi*

-dependence of local distortions in BaFeAs and LiFeAs by X-ray PDF and XAFS methods. Although PDF data exhibit anomaly at the structure transition temperature, EXAFS data exhibit no anomaly. Data supporting the local orthorhombicity at 300 K in the tetragonal phase for BaFeAs. Arguments on the origins of the 4-fold symmetry breaking in the ground average structure of the tetragonal phase.

Language	:	English
Journal	:	Physica C
Volume	:	555
Number	:
Pages	:	p.45 - 53
Publication Year/Month	:	2018/12
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Paper URL	:	https://doi.org/10.1016/j.physc.2018.10.003
DOI for research data	:
Keywords	:	X-ray PDF; EXAFS; 鉄系超伝導体
Research Facility	:	SPring-8(大型放射光施設)
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Article of JAEA R&D Review	:
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Registration No. : AA20180445
JAEA Abstracts No. : 47000228
Paper Submission No. : 20905

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