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物理学报. 2008, 57(11): 7078-7082.
doi: 10.7498/aps.57.7078.
Sm填充skutterudite化合物中填充原子扰动效应研究
- 收稿日期: 2007-12-26
- 修回日期: 2008-04-24
- 刊出日期: 2008-11-20
摘要: 结合Rietveld结构解析和拉曼光谱对单相多晶的Sm原子填充的skutterudite化合物SmyFexCo4-xSb12进行了分析.Rietveld精确化结果表明：SmyFexCo4-xSb12化合物具有填充式skutterudite结构，Sm原
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关键词:
- 方钴矿 /
- Rietveld结构解析 /
- 拉曼散射 /
- 扰动
English Abstract
Study on rattling of filling atom in Sm filled-skutterudite compounds
- Received Date:
26 December 2007
- Accepted Date:
24 April 2008
- Published Online:
20 November 2008
Abstract: The single-phase polycrystalline Sm-filled skutterudites SmyFexCo4-xSb12 were investigated by Rietveld refinement and Raman scattering spectral analysis. The results of Rietveld refinement clarify that the SmyFexCo4-xSb12 compound has a filled skutterudite structure. The thermal parameter of Sm is larger than that of Sb, Fe and Co, and the Sb-Sb bond length of SmyFexCo4-xSb12 is longer than that of unfilled skutterudites. The results of Raman scattering study show a shift and broadening of the Sb4 ring breathing modes. These results indicate that Sm atoms fill the Sb-icosahedron voids of the skutterudites and rattle in them.
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Keywords:
- filled skutterudites /
- Rietveld refinement /
- Raman scattering /
- rattling
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