Synthesis, crystal structure and thermoelectric properties of IrSn1.5Te1.5 -based skutterudites |
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Authors: | JWG Bos RJ Cava |
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Institution: | Department of Chemistry, Princeton University, Princeton, NJ 08544, USA |
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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 . 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. |
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Keywords: | 61 66 Fn 72 20 Pa |
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