CaGa 2 Se 4 –GaSe system

The phase relations in the CaGa 2 S 4 –GaSe system have been studied using differential thermal analysis, X-ray diffraction, microstructural analysis, microhardness tests, and density measurements, and its T – x phase diagram has been mapped out. The CaGa 2 S 4 –GaSe system has been shown to be a pseudobinary join of the ternary system Ca–Ga–Se. The CaGa 2 S 4 –GaSe system has been found to contain limited solid solutions based on the constituent selenides. The electrical conductivity of CaGa 2 S 4 has been measured and its current–light behavior and photoelectric properties have been studied.