Study of Kinetic Coefficients of (GeTe)1-x - (Ga2Te3)x Solid Solutions

Authors : Mir Hasan AKPEROV, Turgay ATALAY, Halit TAŞKIN, A Mustafa ERER

Pages : 325-332

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :In this study, such kinetic cparametres as thermoelectro motor force insert ignore into journalissuearticles values(thermo e.m.f);, electrical coductivity, heat conductivity, Hall and Nernst-Ettingshausen coeficients are investigated, as a function of chemical composition of insert ignore into journalissuearticles values(GeTe);1-x-insert ignore into journalissuearticles values(Ga2Te3);x and temperature, by physicochemical methods and x-rays analysis. The kinetic parameters insert ignore into journalissuearticles values(GeTe);1-x-insert ignore into journalissuearticles values(Ga2Te3);x solid solutions are investigated between x=0 and 0,015 and between 77 and 900 K. Adding of Ga2Te3 to GeTe reduces the phase transition temperature of b-GeTe to a-GeTe. It is observed that in the region of solid solution the rhombohedral modification of GeTe are protected. Doping of GeTe with Ga2Te3 does not affect the kinetic parameters of GeTe. Anomalies in the rhombohedral phase of solid solutions are related with splitting of cubic phase extremums due to deformation of the rhombohedral lattice. Decreasing of Hall coefficient while increasing thermo e.m.f near phase transition point, in the cubic phase were explained with changing of Hall factor A.
Keywords : Turk J Phys, 22, 1998, 325 332 Turk J Phys, vol 22, iss 4