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Thermoelectric properties and microstructure of Mg3Sb2 |
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| Authors: | Cathie L Condron Franck Gascoin G Jeffrey Snyder |
| Institution: | a Department of Chemistry, University of California Davis, One Shields Avenue, Davis, CA 95616, USA b California Institute of Technology, Materials Science, 1200 East California Boulevard, Pasadena, CA 91125, USA c Jet Propulsion Laboratory/California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA |
| Abstract: | Mg3Sb2 has been prepared by direct reaction of the elements. Powder X-ray diffraction, thermal gravimetric, differential scanning calorimetery, and microprobe data were obtained on hot pressed samples. Single phase samples of Mg3Sb2 were prepared and found to contain oxygen at the grain boundaries and to lose Mg and oxidize at temperatures above 900 K. Thermoelectric properties were characterized by Seebeck, electrical resistivity, and thermal conductivity measurements from 300 to 1023 K, and the maximum zT was found to be 0.21 at ∼875 K. |
| Keywords: | High temperature thermoelectric Calorimetry Mg3Sb2 Thermoelectric Zintl phase Zintl Composite thermoelectric Antimonide |
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