Thermoelectric properties of Chevrel phase Mo6Te8−xSx

Ken Kurosaki, Atsuko Kosuga, Shinsuke Yamanaka

doi:10.1016/s0925-8388(02)01002-2

Thermoelectric properties of Chevrel phase Mo6Te8−xSx

DOI Web Site Web Site 被引用文献1件

書誌事項

公開日: 2003-03

権利情報

https://www.elsevier.com/tdm/userlicense/1.0/

DOI

10.1016/s0925-8388(02)01002-2

公開者: Elsevier BV

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説明

The series of Chevrel phases, Mo6Te8−xSx (x=0, 1, 2), was prepared and the thermoelectric properties such as the electrical resistivity, Seebeck coefficient, and thermal conductivity were measured. Sulfur substitution increases the electrical resistivity and decreases the absolute value of the Seebeck coefficient of Mo6Te8−xSx. The Seebeck coefficients of all samples are positive in the whole temperature range, showing that the majority of charge carriers are holes. The thermal conductivities of Mo6Te8−xSx are lower than those of Mo3Te4, which is caused by the enhancement of phonon scattering due to the substitution of sulfur for tellurium. The thermoelectric figure of merit, ZT is not enhanced by the substitution of sulfur, and the maximum value of ZT is 0.015 at about 1000 K for Mo3Te4.