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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原子的热振动参数远远大于框架原子Sb,Fe和Co;与未填充的skutterudite化合物相比,SmyFexCo4-xSb12化合物的Sb—Sb键长增加.拉曼光谱分析表明:与未填充的skutterudite化合物相比,SmyFexCo4-xSb12化合物Sb原子四面环的呼吸振动模峰位偏移并宽化.这些结果证明Sm原子填充进了skutterudite化合物结构中的Sb二十面体空洞并具有扰动效应.
The Smut-filled skutterudite compound SmyFexCo4-xSb12 was analyzed by Rietveld structure analysis and Raman spectroscopy. The results of Rietveld analysis show that the SmyFexCo4-xSb12 compound has a skutterudite structure and the thermal vibrational parameters of Sm atom are far Is much larger than the framework atoms Sb, Fe and Co; the Sb-Sb bond length of the SmyFexCo4-xSb12 compound is increased compared to the unfilled skutterudite compound.Raman spectroscopy shows that compared to the unfilled skutterudite compound, the SmyFexCo4-xSb12 compound The vibrational peak shifts and broadening of the respiration vibration modes of the four-ring ring of Sb atoms demonstrate that the Sm atoms fill the Sb icosahedron cavity in the skutterudite compound structure and have a perturbing effect.