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Chevrel Phases as Good Thermoelectric Materials

Published online by Cambridge University Press:  10 February 2011

C. Roche ,
P. Pecheur ,
M. Riffel ,
A. Jenny ,
H. Scherrer  and
S. Scherrer
C. Roche
Affiliation:
Laboratoire de Physique des Matériaux, CNRS UMR 7556, Ecole des Mines, 54042 NANCY, FRANCE
P. Pecheur
Affiliation:
Laboratoire de Physique des Matériaux, CNRS UMR 7556, Ecole des Mines, 54042 NANCY, FRANCE
M. Riffel
Affiliation:
Laboratoire de Physique des Matériaux, CNRS UMR 7556, Ecole des Mines, 54042 NANCY, FRANCE
A. Jenny
Affiliation:
Laboratoire de Physique des Matériaux, CNRS UMR 7556, Ecole des Mines, 54042 NANCY, FRANCE
H. Scherrer
Affiliation:
Laboratoire de Physique des Matériaux, CNRS UMR 7556, Ecole des Mines, 54042 NANCY, FRANCE
S. Scherrer
Affiliation:
Laboratoire de Physique des Matériaux, CNRS UMR 7556, Ecole des Mines, 54042 NANCY, FRANCE
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Abstract

Chevrel phases have an open lattice with large voids in which cations can be inserted. These cations are good scattering centers for phonons. The thermal conductivity of these compounds must be low. Chevrel phases are generally metallic, but we calculated the density of states of several compounds and we found that Zn2Mo6Se8, Cd2Mo6Se8, TiMo6Se8 are semiconducting whereas SnMo6Se8, Cu2Mo6Se8 and CrMo6Se8 are metallic. We are currently trying to synthesize Zn2Mo6Se8 by different ways.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 545: Symposium Z – Thermoelectric Materials 1998 - The Next Generation… , 1998 , 81
Copyright
Copyright © Materials Research Society 1999

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References

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