X-ray powder diffraction study of semiconducting alloys Ag1−xCuxCd2GaS4 and AgCd2Ga1−xInxS4

X-ray powder diffraction was used in the study of the AgCd2GaS4-'CuCd2GaS4' and AgCd2GaS4-'AgCd2InS4' sections for the determination of solid solubility regions of AgCd2GaS4. It was established that solid solutions extend from 0 to ∼34 mol% 'CuCd2GaS4' and from 0 to 12 mol% 'AgCd2InS4'. The crystal structure of the Ag0.8Cu0.2Cd2GaS4 and AgCd2Ga0.9In0.1S4 alloys was refined. Both alloys crystallize in an orthorhombic structure (space group Pmn21) with the unit cell parameters a = 0.80935(5) nm, b = 0.68784(4) nm, c = 0.65611(4) nm, V = 0.36526(7) nm3 and a = 0.81550(4) nm, b = 0.69066(4) nm, c = 0.65986(4) nm, V = 0.37166(6) nm3, respectively.