Study on rattling of filling atom in Sm filled-skutterudite compounds

被引：0
|
作者：
Liu Tao-Xiang [1 ]
Tang Xin-Feng [1 ]
Li Han [1 ]
Su Xian-Li [1 ]
Zhang Qing-Jie [1 ]
机构：
[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
来源：
ACTA PHYSICA SINICA | 2008年 / 57卷 / 11期
基金：
中国国家自然科学基金;
关键词：
filled skutterudites; Rietveld refinement; Raman scattering; rattling;
D O I：
10.7498/aps.57.7078
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The single-phase polycrystalline Sm-fitled skutterudites Sm-y Fe-x Co4-x Sb-12 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 Sm-y Fe-x Co4-x Sb-12 is longer than that of unfilled skutterudites. The results of Raman scattering study show a shift and broadening of the Sb-4 ring breathing modes. These results indicate that Sm atoms fill the Sb-icosahedron voids of the skutterudites and rattle in them.
引用
收藏
页码：7078 / 7082
页数：5
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