| Solid state reaction synthesis of filled skutterudite compounds (Ce or Y)_y,Fe_xCo_(4-x)Sb_(12) and the effect of filling atoms Ce or Y on lattice thermal conductivity |
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| 作者姓名： | 唐新峰 陈立东 後藤孝 平井敏雄 袁润章 |
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| 作者单位： | TANG Xinfeng,CHEN Lidong,Takashi Goto,Toshio Hirai(Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan);YUAN Runzhang(State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China)
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| 摘 要： | The synthesis of filled skutterudite compounds (Ce or Y)_y(Fe)_x(Co)_(4x)(Sb)_(12), through a solidstate reaction using chloride of Ce or Y,high purity powder of Co, Fe, and Sb as starting materials,was investigated. (Ce or Y)_y(Fe)_x(Co)_(4x)(Sb)_(12) (x=0--1.0, y=0--0.15) compounds were obtained at850--1 123 K. The results of Rietveld analysis demonstrate that (Ce or Y)_y(Fe)_x(Co)_(4x)(Sb)_12synthesized by a solid state reaction possesses a filled skutterudite structure. The filling fraction ofCe or Y obtained by Rietveld analysis agrees well with the composition obtained by chemicalanalysis. The lattice constant of (Ce)_y(Fe)_x(Co)_(4x)(Sb)_(12) increases with increasing substitution of Fe at Cosites, and with an increasing Ce filling fraction in the Sb-dodecahedron voids. The lattice thermalconductivity of (Ce or Y)_y(Fe)_x(Co)_(4x)(Sb)_(12) decreases significantly with an increasing Ce or Y fillingfraction in the voids and with substitution of Fe at Co sites.
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| 关 键 词： | filled skutterudite compound solid state reaction lattice thermal conductivity |
Solid state reaction synthesis of filled skutterudite compounds (Ce or Y)yFexCo4-xSb12 and the effect of filling atoms Ce or Y on lattice thermal conductivity |
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| TANG Xinfeng,CHEN Lidong,Takashi Goto,Toshio Hirai,YUAN Runzhang.Solid state reaction synthesis of filled skutterudite compounds (Ce or Y)_y,Fe_xCo_(4-x)Sb_(12) and the effect of filling atoms Ce or Y on lattice thermal conductivity[J].Science in China(Chemistry),2000,43(3). |
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| Authors: | TANG Xinfeng CHEN Lidong Takashi Goto Toshio Hirai YUAN Runzhang |
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| Abstract: | The synthesis of filled skutterudite compounds (Ce or Y)_y(Fe)_x(Co)_(4x)(Sb)_(12), through a solidstate reaction using chloride of Ce or Y,high purity powder of Co, Fe, and Sb as starting materials,was investigated. (Ce or Y)_y(Fe)_x(Co)_(4x)(Sb)_(12) (x=0--1.0, y=0--0.15) compounds were obtained at850--1 123 K. The results of Rietveld analysis demonstrate that (Ce or Y)_y(Fe)_x(Co)_(4x)(Sb)_12synthesized by a solid state reaction possesses a filled skutterudite structure. The filling fraction ofCe or Y obtained by Rietveld analysis agrees well with the composition obtained by chemicalanalysis. The lattice constant of (Ce)_y(Fe)_x(Co)_(4x)(Sb)_(12) increases with increasing substitution of Fe at Cosites, and with an increasing Ce filling fraction in the Sb-dodecahedron voids. The lattice thermalconductivity of (Ce or Y)_y(Fe)_x(Co)_(4x)(Sb)_(12) decreases significantly with an increasing Ce or Y fillingfraction in the voids and with substitution of Fe at Co sites. |
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| Keywords: | filled skutterudite compound solid state reaction lattice thermal conductivity |
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