Solid-state equilibria at 800 and 300 K in the 6Ag₂S+Ag₈SnSe₆«6Ag₂Sе+Ag₈SnS₆ system which is of interest from the point of view of obtaining new mixed ion-electron conductors were studied by DTA, XRD and SEM methods. According to the results obtained it was shown that the system is reversibly reciprocal and is characterized by the formation of continuous (800 K) or wide (300 K) regions of substitutional solid solutions along the boundary systems  Ag₂S–Ag₂Sе and Ag₈SnS₆–Ag₈SnSe₆

doi.org/10.32737/0005-2531-2019-4-70-75