CdGa2S4-MGa2S4 (M = Zn and Mg) systems

A phase microdiagram of the system CdS-Ga₂S₃ in the CdGa₂S₃ homogeneous region was constructed, and the composition corresponding to congruent melting was determined (Cd_0.498Ga_1.004S_2.004). A fragment of the CdGa₂S₄-ZnGa₂S₄ phase diagram was studied, and the solid solution composition suitable for growing homogeneous single crystals with respect to the isotropic wavelength λ₀ within 492.7–532 nm was determined. A CdGa₂S₄-MgGa₂S₄ phase diagram was constructed, and the isotropic wavelength was studied as a function of magnesium prevalence in cadmium thiogallate. Magnesium and zinc codoping produces gyrotropic single crystals suitable for manufacturing optical elements of filtering devices with λ₀ within 492.7–880 nm.