Synthesis, crystal structure and thermoelectric properties of IrSn1.5Te1.5 -based skutterudites

J. W.G. Bos, R. J. Cava

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21 Scopus citations

Abstract

The mixed anion skutterudite IrSn1.5Te1.5 has been synthesized and characterized by X-ray powder diffraction, thermopower and electrical resistivity measurements. Structural analysis reveals that Sn and Te order in layers perpendicular to the [111] direction of the skutterudite unit cell, and a distortion of the anion sublattice is evident. The thermopower (S) is 160 μV/K at room temperature, while the electrical resistivity (ρ) is 65 m Ω cm. The effects of chemical substitutions on the Ir site (Ru, Pd) and Sn site (In, Sb) have been investigated. The power factor (S2 / ρ) was found to improve with In substitution but, at 0.9 μW/K2 cm, is too small for this material to be useful for thermoelectric applications.

Original languageEnglish (US)
Pages (from-to)38-41
Number of pages4
JournalSolid State Communications
Volume141
Issue number1
DOIs
StatePublished - Jan 1 2007

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Keywords

  • A. Semiconductors
  • B. Chemical synthesis
  • C. Crystal structure and symmetry
  • D. Electronic transport

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