Abstract
The galvanomagnetic and thermoelectric properties of p-Bi2−xSbxTe3−ySey solid solutions (x≤1.2, y≤0.09) are studied for various carrier concentrations. The degeneracy parameter βd governing the scattering processes in solid solutions was calculated in terms of the many-valley energy spectrum model. The data on the degeneracy parameter and the Seebeck coefficient α were used to calculate the effective scattering parameter reff and the reduced Fermi level η. The parameter reff was found to depend on the carrier concentration in the materials studied. The temperature dependences of the effective density-of-states mass m/m0 and mobility μ0 in samples with various carrier concentrations were determined.
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