Thermoelectric properties of Sn-filled skutterudites

G. S. Nolas, H. Takizawa, T. Endo, H. Sellinschegg, D. C. Johnson

Research output: Contribution to journalArticlepeer-review

145 Citations (Scopus)

Abstract

Thermal conductivity, resistivity, Seebeck coefficient, and structure measurements of CoSb3 with tin interstitially placed in the voids are reported. These tin-filled skutterudites were synthesized under high pressure and temperature conditions; they cannot be synthesized under "normal" synthesis approaches. The tin atoms exhibit very large atomic displacement parameters indicating a large "rattling" motion inside their atomic "cages." The disorder induced by the Sn atoms is a very good phonon scattering mechanism. The thermal conductivity of these compounds is very low with a temperature dependence that is atypical of simple solids. The tin-filled compounds exhibit n-type semiconducting behavior with relatively high Seebeck coefficients for compounds whose electronic properties have not been optimized. The potential for thermoelectric applications is discussed.

Original languageEnglish
Pages (from-to)52-54
Number of pages3
JournalApplied Physics Letters
Volume77
Issue number1
DOIs
Publication statusPublished - 2000 Jul 3

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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