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Journal of Materials Science

, Volume 36, Issue 22, pp 5435–5439 | Cite as

Synthesis and thermoelectric properties of filled skutterudite compounds CeyFexCo4−xSb12 by solid state reaction

  • X. F. Tang
  • L. D. Chen
  • T. Goto
  • T. Hirai
  • R. Z. Yuan
Article

Abstract

Filled skutterudite compounds, Ce y Fe x Co4−xSb12(x= 0–1.0, y= 0–0.15), were synthesized by solid state reaction using Co, Fe, Sb and CeCl3· nH2O powders as source materials. The lattice constants of Ce y Fe x Co4−xSb12increased with increasing substitution of Fe at Co sites and with increasing Ce filling fraction in the Sb-icosahedron voids. All specimens showed p-type conduction. Carrier concentration (p) and electrical conductivity (σ) increased with increasing substitution of Fe at Co sites and decreased with increasing Ce filling fraction. The Seebeck coefficient (α) decreased with increasing Fe content and increased with increasing Ce filling fraction. Thermal conductivity (κ) decreased with increasing substitution of Fe at Co sites and with increasing Ce filling fraction. A maximum ZTvalue of 0.8 was obtained for Ce0.12Fe0.71Co3.29Sb12at 750 K.

Keywords

Polymer Thermal Conductivity Electrical Conductivity Lattice Constant Carrier Concentration 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • X. F. Tang
    • 1
  • L. D. Chen
    • 1
  • T. Goto
    • 1
  • T. Hirai
    • 1
  • R. Z. Yuan
    • 2
  1. 1.Institute for Materials ResearchTohoku University KatahiraAoba-ku, SendaiJapan
  2. 2.State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhanPeople's Republic of China

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