Thermal Conductivity of Disordered Continuous Ternary Solid Solutions of Semiconductor Compounds PbTe–PbSe–PbS

A model of the structure and a way of calculating the thermal conductivity of ternary alloys are proposed. The initial data for calculating the thermal conductivity at any concentration of the components (limited within the Gibbs composition triangle) are reference data on the thermal conductivity of the components and binary solid solutions of them with equiatomic or equimolecular concentrations. The standard deviation from the experiment is less than 10%.