High temperature transport properties of Yb and in double-filled p-type skutterudites

Dean Hobbis, Yamei Liu, Kaya Wei, Terry M. Tritt, George S. Nolas

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Yb and In double-filled and Fe substituted polycrystalline p-type skutterudite antimonides were synthesized by direct reaction of high-purity elements, followed by solid-state annealing and densification by hot pressing. The stoichiometry and filling fraction were determined by both Rietveld refinement of the X-ray diffraction data and energy dispersive spectroscopic analyses. The transport properties were measured between 300 K and 830 K, and basically indicate that the resistivity and Seebeck coefficient both increase with increasing temperature. In both specimens, the thermal conductivity decreased with increasing temperature up to approximately 700 K, where the onset of bipolar conduction was observed. A maximum ZT value of 0.6 at 760 K was obtained for the Yb0.39In0.018Co2.4Fe1.6Sb12 specimen.

Original languageEnglish
Article number256
Issue number9
StatePublished - Sep 2017


  • Bipolar diffusion
  • Double-filled
  • Figure of merit
  • P-type
  • Skutterudite
  • Thermoelectric


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