Galvanomagnetic properties of multicomponent solid solutions based on Bi and Sb chalcogenides

Abstract

Galvanomagnetic properties of multicomponent solid solutions of n-Bi/sub 2-x/Sb/sub x/Te/sub 3-y-z/Se/sub y/S/sub z/ composition were studied in weak and intermediate magnetic fields. Components of the effective mass tensor m/sub i//m/sub j/ were determined in the framework of the many-valley energy spectrum model using the isotropic scattering mechanism for a variety of solid solution compositions and electron concentrations. The influence of constant-energy surface parameters on the solid solutions thermoelectric efficiency was analyzed.