Fluctuation in Lattice Constant near Miscibility Gap of CdTe-Ga₂Te₃ System

Abstract

Appearance of miscibility gaps in solid solution CdTe-Ga2Te3 was describe taking account of fluctuation of lattice constants due to an increasing concentration of Ga2Te3. Introducing a new parameter F, degree of fluctuation of lattice, a relation between half-value width of rocking curve and the fluctuation of lattice parameter was obtained. It was shown that the solid solution becomes immiscible when the fluctuation of lattice parameter exceeds about 2.5%.