PbTe–Bi₂Te₃–Sb₂Te₃ system has been studied by DTA and X-ray diffraction methods along the PbBi₂Te₄ – "PbSb₂Te₄" section. It was found that the compound of the composition PbSb₂Te₄, specified in the literature does not exist.  On the basis of the latter a wide (more than 50 mol%) area of solid solution (γ) was detected. By using obtained experimental results, a fragment of the solid-phase equilibrium diagram of the PbTe–Bi₂Te₃–Sb₂Te₃ system was constructed and boundaries of the heterogeneous areas α+γ, α+β, α+β+γ (α- and β- are solid solutions based on PbTe and Sb₂Te₃, respectively) have been determined

doi.org/10.32737/0005-2531-2020-4-53-59