The solid-phase equilibria in the TlSbТe₂–TlТbTe₂ system been forts studied by using the powder X-ray diffraction method. It was established that despite the isostructural character of the starting compounds (hexagonal structure, Sp. Gr. R-3m), the system is characterized by a limited mutual solubility of the components. The solubility based on TlSbTe₂ reaches ~30 mol%, and base on TlТbTe₂ is about 10 mol%. The lattice parameters of solid solutions are calculated based on powder roentgenograms

https://doi.org/10.32737/0005-2531-2019-3-84-87