Thermoelectric Properties of NdxCo4-yNiySb12 Skutterudite Compounds

Author

Ros, V. Da ; Lenoir, B. ; Dauscher, A. ; Candolfi, C. ; Bellouard, C. ; Stiewe, C. ; Müller, E. ; Hejtmanek, J.

Author_Institution

Lab. de Phys. des Materiaux, Ecole Nationale Superieure des Mines de Nancy

fYear

2006

fDate

6-10 Aug. 2006

Firstpage

155

Lastpage

158

Abstract

In an effort to further understand the influence of Nd on the thermoelectric properties of the binary compound CoSb₃ and try to optimize them through doping, we prepared and investigated Nd_xCo_4-yNi_ySb₁₂ compounds. The samples have been prepared by a conventional metallurgical route. Structural analysis has 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, thermal conductivity and Hall coefficient have been performed. The influence of both Nd and Ni on the thermoelectric properties of the binary parent CoSb₃ is presented and discussed. Nd plays the role of a dopant (n-type) and the presence of Ni contributes to decrease significantly the electrical resistivity

Keywords

Hall effect; X-ray diffraction; cobalt compounds; doping; electrical resistivity; electron probe analysis; narrow band gap semiconductors; neodymium compounds; nickel compounds; powder metallurgy; thermal conductivity; thermoelectric power; Hall coefficient; Nd_xCo_4-yNi_ySb₁₂; X-ray diffraction; chemical composition; doping; electrical resistivity; electron probe microanalysis; metallurgy; microhomogeneity; skutterudite compound; structural analysis; thermal conductivity; thermoelectric power; thermoelectric property; Chemicals; Conductivity measurement; Doping; Electric resistance; Electrons; Neodymium; Probes; Thermal conductivity; Thermoelectricity; X-ray diffraction;

fLanguage

English

Publisher

ieee

Conference_Titel

Thermoelectrics, 2006. ICT '06. 25th International Conference on

Conference_Location

Vienna

ISSN

1094-2734

Print_ISBN

1-4244-0811-3

Electronic_ISBN

1094-2734

Type

conf

DOI

10.1109/ICT.2006.331322

Filename

4133260