Solid state reaction synthesis of filled skutterudite compounds (Ce or Y) y Fe x Co 4-x Sb 12 and the effect of filling atoms Ce or Y on lattice thermal conductivity
Solid state reaction synthesis of filled skutterudite compounds (Ce or Y) y Fe x Co 4-x Sb 12 and the effect of filling atoms Ce or Y on lattice thermal conductivity
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DOI：
10.1007/bf02969526
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发表时间：
2000-03
影响因子：
9.6
通讯作者：
Xinfeng Tang;Lidong Chen;Goto Takashi;Hirai Toshio;R. Yuan
中科院分区：
文献类型：
--
作者：
Xinfeng Tang;Lidong Chen;Goto Takashi;Hirai Toshio;R. Yuan
The synthesis of filled skutterudite compounds (Ce or Y)yFexCo4-xSb12, through a solid state reaction using chloride of Ce or Y, high purity powder of Co, Fe, and Sb as starting materials, was investigated. (Ce or Y)yFexCo4-xSb12 (x= 0 1.0,y= 0 0.15) compounds were obtained at 850 1 123 K. The results of Rietveld analysis demonstrate that (Ce or Y)yFexCo4-xSb12 synthesized by a solid state reaction possesses a filled skutterudite structure. The filling fraction of Ce or Y obtained by Rietveld analysis agrees well with the composition obtained by chemical analysis. The lattice constant of CeyFexCo4-xSb12 increases with increasing substitution of Fe at Co sites, and with an increasing Ce filling fraction in the Sb-dodecahedron voids. The lattice thermal conductivity of (Ce or Y)yFexCo4-xSb12 decreases significantly with an increasing Ce or Y filling fraction in the voids and with substitution of Fe at Co sites.
