SYNTHESIS AND CRYSTAL STRUCTURE OF THE FeGaInS4 COMPOUND

The equilibrium alloys of the FeGa2S4–FeIn2S4 system were studied by the method of powder X-ray diffraction. The formation of limited substitutional solid solutions based on the initial ternary compounds and the existence of a quaternary FeGaInS4 compound were established. Based on powder diffraction data, by Rietveld method the crystal structure of the FeGaInS4 compound was refined. It was shown that compound crystallizes in the trigonal system (Sp.gr.P-3m1) with lattice parameters: a = 3.7765(1), c = 12.2257(3) Å, V = 151.00(1) Å3