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Thermoelectric Properties of InxCo4-yNiySb12 Skutterudite Compounds

Published online by Cambridge University Press:  01 February 2011

Veronique Da Ros
Affiliation:
[email protected], Ecole Nationale Superieure des Mines de Nancy, Laboratoire de Physique des Materiaux, Parc de Saurupt, CS 14234, Nancy, 54042, France
Juliusz Leszczynski
Affiliation:
[email protected], Ecole Nationale Superieure des Mines de Nancy, Laboratoire de Physique des Materiaux, Parc de Saurupt, CS 14234, Nancy, 54042, France
Bertrand Lenoir
Affiliation:
[email protected], Ecole Nationale Superieure des Mines de Nancy, Laboratoire de Physique des Materiaux, Parc de Saurupt,, CS 14234, Nancy, 54042, France
Anne Dauscher
Affiliation:
[email protected], Ecole Nationale Superieure des Mines de Nancy, Laboratoire de Physique des Materiaux, Parc de Saurupt,, CS 14234, Nancy, 54042, France
Christophe Candolfi
Affiliation:
[email protected], Ecole Nationale Superieure des Mines de Nancy, Laboratoire de Physique des Materiaux, Parc de Saurupt,, CS 14234, Nancy, 54042, France
Philippe Masschelein
Affiliation:
[email protected], Ecole Nationale Superieure des Mines de Nancy, Laboratoire de Physique des Materiaux, Parc de Saurupt,, CS 14234, Nancy, 54042, France
Christine Bellouard
Affiliation:
[email protected], Universite Henri Poincare - Nancy I, Laboratoire de Physique des Materiaux, BP 239, Vandoeuvre les Nancy, 54506, France
Christian Stiewe
Affiliation:
[email protected], German Aerospace Center DLR, Institute of Materials Research, Linder Hoehe, Geb. 51, Köln, D-51147, Germany
Eckard Mueller
Affiliation:
[email protected], German Aerospace Center DLR, Institute of Materials Research, Linder Hoehe, Geb. 51, Köln, D-51147, Germany
Jiri Hejtmanek
Affiliation:
[email protected], Academy of Sciences of the Czech Republic, Institute of Physics, Cukrovarnicka 10, Praha 6-Stresovice, 10162 53, Czech Republic
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Abstract

The preparation of partially filled n-type InxCo4Sb12 skutterudite compounds has been recently reported. The results were particularly promising, the materials exhibiting a ZT value far higher than one at moderated temperature. In this paper, we propose to investigate another way to tune the electrical and thermal properties by substituting Co atoms by Ni atoms in InxCo4Sb12. InxCo4-yNiySb12 polycrystalline samples have been prepared by a conventional metallurgical route. Structural analyses have been carried out by X-ray diffraction. The chemical composition and micro-homogeneity have been checked by electron probe microanalysis. Measurements of the electrical resistivity, thermoelectric power and thermal conductivity have been performed between 300 and 800 K. The influence of the presence of Ni on the thermoelectric properties of InxCo4Sb12 compounds is presented and discussed.

Type
Research Article
Copyright
Copyright © Materials Research Society 2008

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