Calorimetric studies of thermal crystallization in glassy Se₈₀Te₂₀and Se₈₀In₂₀ alloys

Abstract

Different methods have been used by various workers to determine the activation energy of thermal crystallization (<i style="">E</i>_c) in chalcogenide glasses using non-isothermal DSC data. In the present work, the crystallization kinetics of two important binary alloys Se₈₀Te₂₀ and Se₈₀In₂₀ is studied, using non-isothermal DSC data. DSC thermograms of thesealloys have been taken at five different heating rates. The values of activation energy of crystallization (<i style="">E</i>_c) have been determined by four different methods, i.e., Kissinger’s relation, Matusita and Sakka theory, Augis and Bennett’s approximation and Ozawa’s equation. The results obtained have been compared with each other to see the effect of using different methods in the determination of <i style="">E</i>_c. The composition dependence of <i style="">E</i>_chas also been discussed.