impact of synthesis pressure on the thermoelectric properties of CoSb

A novel chemical alloying method of high pressure and high temperature (HPHT) has been used for the synthesis of bulk-skutterudite CoSb₃. Through this method, the processing time can be reduced from a few days to half an hour. The Seebeck coefficient, electrical resistivity and thermal conductivity...

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Bibliographic Details
Published in:Materials letters 2013, Vol.93, p.219-222
Main Authors: Deng, L, Jia, X.P, Qin, J.M, Wan, Y.C, Li, J.L, Ma, H.A
Format: Article
Language:English
Subjects:
electrical resistance
temperature
thermal conductivity
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Summary:A novel chemical alloying method of high pressure and high temperature (HPHT) has been used for the synthesis of bulk-skutterudite CoSb₃. Through this method, the processing time can be reduced from a few days to half an hour. The Seebeck coefficient, electrical resistivity and thermal conductivity of CoSb₃ were all measured in the temperature range of 327–661K. The Seebeck coefficient of CoSb₃ increased with increasing synthesis pressure; a substantial reduction in the thermal conductivity was observed with increasing synthesis pressure. These results indicated that the HPHT technique may be helpful for optimizing electrical and thermal transports in a relatively independent way.
ISSN:0167-577X
1873-4979