Dynamic and Static Disorder of Alkali Halide Solid Solutions studied by Temperature-dependent Extended X-Ray-Absorption Fine Structure
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概要
- 論文の詳細を見る
Interatomic potential of ionic bonds in alkali halide solid solutions has been studied by temperature dependent EXAFS (extended X-ray absorption fine structure). As a typical ionic bond in alkali halide solid solutions, K-Br bond of KCl_<0.2>Br_<0.2> and KBr_<0.2>I_<0.2> solid solutions have been focused. The K-Br bond was contracted for KCl_<0.2>Br_<0.2>, while it was elongated for KBr_<0.2>I_<0.2>, as compared to that in KBr. The longer K-Br bond was softer and less anharmonic than the shorter K-Br bond. We could explain this bond length dependence of the force constants in terms of the interatomic potential of the K-Br bond. The static disorder also increased with the K-Br bond length.
- 社団法人日本物理学会の論文
- 2002-04-15
著者
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KOMA Atsushi
Department of Chemistry, The University of Tokyo
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KIGUCHI Manabu
Department of Complexity Science and Engineering, The University of Tokyo
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SAIKI Koichiro
Department of Chemistry, The University of Tokyo
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小間 篤
Department Of Chemistry The University Of Tokyo
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Saiki Koichiro
Department Of Applied Physics Faculty Of Engineering The University Of Tokyo
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Koma Atsushi
Department Of Applied Physics University Of Tokyo
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Kiguchi Manabu
Department Of Chemistry Graduate School Of Science And Engineering Tokyo Institute Of Technology
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