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Effect of Ni in new skutterudite compounds CaxCo4Sb12

Published online by Cambridge University Press:  01 February 2011

Matthieu Puyet ,
Bertrand Lenoir ,
Anne Dauscher ,
Hubert Scherrer ,
Moukrane Dehmas ,
Jiri Hejtmanek ,
Christian Stiewe  and
Eckhard Müller
Matthieu Puyet
Affiliation:
Laboratoire de Physique des Materiaux, UMR 7556, Ecole National supérieure des Mines de Nancy, Parc de Saurupt, 54042 Nancy cedex, France
Bertrand Lenoir
Affiliation:
Laboratoire de Physique des Materiaux, UMR 7556, Ecole National supérieure des Mines de Nancy, Parc de Saurupt, 54042 Nancy cedex, France
Anne Dauscher
Affiliation:
Laboratoire de Physique des Materiaux, UMR 7556, Ecole National supérieure des Mines de Nancy, Parc de Saurupt, 54042 Nancy cedex, France
Hubert Scherrer
Affiliation:
Laboratoire de Physique des Materiaux, UMR 7556, Ecole National supérieure des Mines de Nancy, Parc de Saurupt, 54042 Nancy cedex, France
Moukrane Dehmas
Affiliation:
Laboratoire de Science et Génie des Matériaux et de Métallurgie, UMR 7584, Ecole National supérieure des Mines de Nancy, Parc de Saurupt, 54042 Nancy cedex, France
Jiri Hejtmanek
Affiliation:
Institute of Physics Academy of Sciences of the Czech Republic, Cukrovarnicka 10, CZ-162 53 Praha 6, Czech Republic
Christian Stiewe
Affiliation:
German Aerospace Center (DLR), Institute of Materials Research, Linder Hoehe, 51147 Cologne, Germany.
Eckhard Müller
Affiliation:
German Aerospace Center (DLR), Institute of Materials Research, Linder Hoehe, 51147 Cologne, Germany.
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Abstract

The transport properties of the partially filled CaxCo4-yNiySb12 skutterudite compounds have been investigated in the 300 – 800 K temperature range. We underline the positive influence of the Ni substitution on the electrical resistivity and thermopower while the thermal properties – thermal conductivity – remains almost unaffected. These results suggest again a beneficial effect of Ni atoms on the dimensionless figure of merit in CoSb3 based compounds.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 793: Symposium S – Thermoelectric Materials 2003 - Research and Applications , 2003 , S4.1
Copyright
Copyright © Materials Research Society 2004

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References

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