Preparation and thermoelectric properties of A/sub 8//sup II/B/sub 16//sup III/B/sub 30//sup IV/ clathrate compounds

Author

Kuznetsov, Vladimir I. ; Kuznetsova, L.A. ; Kaliazin, A.E. ; Rowe, D.M.

Author_Institution

NEDO Centre for Thermoelectr. Energy Conversion, Cardiff Univ., UK

fYear

1999

fDate

Aug. 29 1999-Sept. 2 1999

Firstpage

177

Lastpage

180

Abstract

The preparation, characterisation and measurements of the temperature dependence of the transport properties of clathrate compounds Ba/sub 8/Ga/sub 16/Si/sub 30/, Ba/sub 8/Ga/sub 16/Ge/sub 30/, Ba/sub 8/Ga/sub 16/Sn/sub 30/, and Sr/sub 8/Ga/sub 16/Ge/sub 30/ are reported. The samples were characterised using X-ray diffraction, differential thermal analysis, electrical resistivity, Seebeck coefficient and Hall coefficient measurements. The materials possess a moderate negative Seebeck coefficient and a low electrical resistivity which increase with increasing temperature. The potential for thermoelectric applications of these materials is assessed.

Keywords

Hall effect; Seebeck effect; X-ray diffraction; barium compounds; differential thermal analysis; electrical resistivity; gallium compounds; materials preparation; strontium compounds; Ba/sub 8/Ga/sub 16/Ge/sub 30/; Ba/sub 8/Ga/sub 16/Si/sub 30/; Ba/sub 8/Ga/sub 16/Sn/sub 30/; Hall coefficient; Seebeck coefficient; Sr/sub 8/Ga/sub 16/Ge/sub 30/; X-ray diffraction; clathrate compounds; differential thermal analysis; electrical resistivity; temperature dependence; thermoelectric applications; Argon; Atmosphere; Cooling; Electric resistance; Heating; Lattices; Powders; Temperature measurement; Thermoelectricity; X-ray diffraction;

fLanguage

English

Publisher

ieee

Conference_Titel

Thermoelectrics, 1999. Eighteenth International Conference on

Conference_Location

Baltimore, MD, USA

ISSN

1094-2734

Print_ISBN

0-7803-5451-6

Type

conf

DOI

10.1109/ICT.1999.843362

Filename

843362