PHASE-DIAGRAM OF THE (CULNTE2)1-X-(2ZNTE)X SYSTEM AND CRYSTAL-GROWTH OF CUZN2INTE4 FROM ZINC-CHLORIDE FLUX

The phase diagram of the system (CuInTe2)1-x(2ZnTe)x has been investigated by microstructure, DTA, and X-ray examinations. It has been found that CuInTe2 and ZnTe form, at elevated temperatures, a continuous series of zincblende solid solutions. The boundaries of the solid-phase fields have been established: At room temperature, the tetragonal chalcopyrite phase α is stable up to about the x = 0.10 composition and is followed by a two-phase region (α + β), extending from x = 0.10 to x = 0.33 composition, and by a region x ≥ 0.33 with the cubic zincblende β structure. Using the flux growth technique with ZnCl2 as solvent, single crystals of the CuZn2InTe4 composition (x = 0.50), closely related to the diamond lattice, have been obtained. © 1979.