Calorimetric studies of glass transition phenomenon in glassy Se₈₀₋ _xTe₂₀Sn_x alloys

Abstract

Glass transition kinetics has been studied in a glassy Se 80− x Te 20 Sn x (0 ⩽ x ⩽10) system. Differential scanning calorimetry (DSC) runs were taken at four different heating rates (5, 10, 15 and 20 K min −1 ) for this purpose. The heating rate dependence of the glass transition temperature ( T g ) has been studied using different non-isothermal methods. The activation energy of glass transition ( E g ) has been evaluated using Kissinger's relation and the theory of Moynihan. The composition dependence of T g and E g has also been discussed.