Differential thermal analysis and powder X-ray diffraction methods were used for phase equilibria studying in the Cu₃AsSe₄-GeSe₂ system. It was established that wide (up to 30 mol.%) solid solutions based on Cu₃AsSe₄ are formed. GeSe₂-rich alloys consist of various heterogeneous mixtures, including phases outside the T–x plane of this section

doi.org/10.32737/0005-2531-2021-4-67-70