Phase equilibria in the systems AgGaS2–SnS2, AgGaSe2–SnSe2

The AgGaS2–SnS2, AgGaSe2–SnSe2 sections of the ternary reciprocal system AgGaS2 + SnSe2 ⇔ AgGaSe2 + SnS2 were studied by the physico-chemical analysis methods. It was established that these sections are quasi-binary, type V of Roozeboom classification. Wide solid solution ranges of AgGaS2 and AgGaSe2 were discovered as well as practically the absence of solid solubility based on SnS2 and SnSe2. The change of the lattice parameters of solid solutions was determined. The existence of the AgGaSnSe4 compound is not confirmed.