Etudes structurales et optiques des phases du type Cd2A3X (A = As, P; X = Cl, Br, I) et de leur solution solide

Abstract The structure of the compounds with general formula Cd 2 A 3 X (A = As, P; X = Cl, Br, I) was found from X-ray powder diffractograms. The variation of the cell parameter in Cd 2 As 3−x P x I solid solution was studied. The basic transition energy as well as its variation with temperature was obtained from transmission spectra on monocristals. Both results are discussed.