Low-Temperature Heat Capacity of ZnGa2S4, ZnGa2Se4, and ZnGa2Te4 Thiogallates

Abstract

The low-temperature heat capacity of the CdGa2S4 compound (cadmium thiogallate, space group S$ was measured by u s earlier /l/.This report gives the results of heat-capacity measurements conducted i n the temperature range from 5 to 6 0 K on ZnGa S4, ZnGa2Se4, and ZnGa2Te4 representing the thiogallate group of A B2 C4 -type compounds (space group S:or D&) /2/.

X-ray powder diffraction study of ZnGa2Te4

“…The zinc thiogallate group of A II B 2 III C 4 VI -type compounds, i.e., ZnGa 2 S 4 , ZnGa 2 Se 4 , and ZnGa 2 Te 4 are reported to crystallize in either defect chalcopyrite or defect stannite structure (Parthé, 1964). Low temperature heat capacity measurements of the zinc thiogallate group compounds (Veliev et al , 1985) indicate space group I m . The complete range of alloys for the Ga 2 Te 3 –Zn 3 Te 3 system were studied by (Woolley and Ray, 1960).…”