Accession Number : AD0446496

Title :   BASIC STUDIES ON THERMOELECTRIC MATERIALS.

Descriptive Note : Quarterly rept. no. 10.

Corporate Author : WESTINGHOUSE RESEARCH LABS PITTSBURGH PA

Report Date : DEC 1963

Pagination or Media Count : 14

Abstract : The compounds CuTe, ZnTe, SnTe, PbTe and Bi2Te3 were prepared by electrolysis with tellurium cathodes and metal anodes in ammonium acetate acid buffer solutions. The tellurides were formed by homogeneous reaction between metal cations and telluride ions in the bulk of the solutions. GeTe, Ag2Te, SnTe, and ZnTe were also prepared by adding metal salt solutions to electrolytically generated telluride solutions SnTe is formed in contrast to extensive nonstoichiometry possible in compounds prepared at elevated temperatures. Also, GeTe prepared at room temperature was shown to have a somewhat smaller tetragonal distortion than observed in GeTe preparations quenched from higher temperatures. In addition, a low temperature CuTe phase was observed which is apparently of lower symmetry than orthorhombic which was obtained on annealing above 250 C. (Author)

Descriptors :   *TELLURIDES, *CRYSTAL STRUCTURE, *SEMICONDUCTORS, ELECTROLYSIS, SYNTHESIS(CHEMISTRY), THERMOELECTRICITY, CRYSTAL DEFECTS, PHASE STUDIES, PYROLYSIS, X RAYS, INTERMETALLIC COMPOUNDS, TEMPERATURE, COPPER COMPOUNDS, ZINC COMPOUNDS, LEAD COMPOUNDS, TIN COMPOUNDS, BISMUTH COMPOUNDS, GERMANIUM COMPOUNDS, SILVER COMPOUNDS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE