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  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.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Materials Chemistry
- A. Semiconductors
- B. Chemical synthesis
- C. Crystal structure and symmetry
- D. Electronic transport