Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 179, Issue 8, Pages 2252-2257Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2006.01.034
Keywords
high temperature thermoelectric; calorimetry; Mg3Sb2; thermoelectric; zintl phase; zintl; composite thermoelectric; antimonide
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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 900K. 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 similar to 875 K. (c) 2006 Elsevier Inc. All rights reserved.
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