Crystallization parameters of non-crystalline antimony chalcogenides

Abstract

The results of studying the kinetics of non-isothermic crystallization of Sb-S-I glasses are given. By DTA and DerTA methods the characteristic temperatures of thermal effects Tg, Tc, Tm have been investigated. The activation energies of originating nuclei of crystals ΔGA0 and their growth ΔGAM have been calculated from temperatures begining at TC0 and maximum T CM of the crystallization effect as a function of the heating rate q. The critical radii for nuclei of crystals τc and amorphization radii ra are calculated. The crystallizability of melts depending on the composition has been studied. The compositions from the regions of eutectics have been shown to possess a minimal crystallizability, and those ones in the vicinity of Sb2S3 and SbSI stoichiometric compounds possess a maximal one. The results obtained are being discussed proceeding from the peculiarities of the structure of studied materials.