Local Static Distortion of Rare Earth Ions in ROs_4Sb_<12> (R=La, Ce, Pr, Nd, Sm) by Extended X-ray Absorption Fine Structure(Condensed matter: structure and mechanical and thermal properties)
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概要
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Extended X-ray absorption fine structure (EXAFS) measurements have been carried out on ROs_4Sb_<12> (R=La, Ce, Pr, Nd, Sm) to study the motion of rare earth ions accommodated in the Sb icosahedron cage. The temperature dependences of the thermal (Debye-Waller) factors were analyzed from 15 to 300K. The Einstein temperature obtained from EXAFS analysis of SmOs_4Sb_<12> is the lowest of the compounds, while there are no significant differences among the other compounds. The local static disorder obtained from the temperature dependence of EXAFS shows good correlation with the space inside the Sb icosahedron cage. Effective static distortion is expected to occur when the cage space is larger than about 0.5Å.
- 社団法人日本物理学会の論文
- 2008-06-15
著者
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SUGAWARA Hitoshi
Faculty of Integrated Arts and Sciences, The University of Tokushima
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斯波 弘行
Department Of Physics Tokyo Metropolitan University
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SATO Hideyuki
Graduate School of Tokyo Metropolitan University
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Sato H
Graduate School Of Science Osaka University
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斯波 弘行
東京工大
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Shiba Haruya
Department Of Electrical And Electronic Engineering Faculty Of Engineering The University Of Tokushi
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Shiba Hiroyuki
Department Of Physics Kobe University
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Shiba Hiroyuki
Department Of Physics Tokyo Institute Of Technologt
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Takegahara Katsuhiko
Graduate School Of Science And Technology Hirosaki University
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Kikuchi Daisuke
Department Of Physics Tokyo Metropolitan University
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Sugawara Hitoshi
Faculty Of Engineering Iwate University
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Shiozawa Hidetsugu
Department Of Physics Tokyo Metropolitan University
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Sakurai Hiroya
Superconducting Materials Center National Institute For Materials Science (smc/nims)
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NITTA Kiyofumi
Graduate School of Science and Technology, Hirosaki University
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OMORI Yusuke
Graduate School of Science and Technology, Hirosaki University
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KIKUCHI Daisuke
Graduate School of Science, Tokyo Metropolitan University
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MIYANAGA Takafumi
Graduate School of Science and Technology, Hirosaki University
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Omori Yusuke
Graduate School Of Science And Technology Hirosaki University
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Nitta Kiyofumi
Graduate School Of Science And Technology Hirosaki University
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Sato Hideyuki
Graduate School Of Science Tokyo Metropolitan University
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Miyanaga Takafumi
Graduate School Of Science And Technology Hirosaki University
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SUGAWARA Hitoshi
Faculty of Integrated Arts and Sciences, University of Tokushima
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SATO Hideyuki
Graduate School of Science, Tokyo Metropolitan University
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