Packing of the tetrahedra of sulphur atoms all-around p-component atoms while in the buildings on the AgGaS2, AgGaGeS4 and KGaGeS4 compounds.A defect composition of nonlinear optical content ZnGeP2, developed via the vertical Bridgman system from your soften, was analyzed. The point out-of-the-artwork brings about ZnGeP2 growth with sufficiently pe