Open AccessStudy on rattling of filling atom in Sm filled-skutterudite compounds
Author(s) -
Liu Tao-Xiang,
Xinfeng Tang,
Li Han,
Su Xian-Li,
Qingjie Zhang
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.7078
Subject(s) - skutterudite , rietveld refinement , materials science , crystallite , raman spectroscopy , atom (system on chip) , raman scattering , ring (chemistry) , crystallography , condensed matter physics , crystal structure , thermal conductivity , physics , optics , chemistry , metallurgy , composite material , thermoelectric materials , organic chemistry , computer science , embedded system
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.