Differential scanning calorimetric study of Se80Te20−xCux chalcogenide glasses

Results of differential scanning calorimetric (DSC) under non-isothermal condition of bulk amorphous semiconducting alloys of Se80Te20−xCux (x=2, 4, 6, 8 and 10) glasses with different heating rates are reported and discussed. The glass transition temperature, crystallization temperature at different heating rates and structural change during glass transition have been determined from an empirical relation. The dependence of the glass transition temperature (Tg), crystallization temperature (Tc), the activation energy for structural relaxation (ΔEt), the activation energy of crystallization (ΔEc) and the order parameter (n) are calculated at different heating rates. On the basis of the obtained experimental data, the temperature difference Tc−Tg is found to be maximum for Se80Te16Cu4 glass, which indicates that this glass is the thermally most stable in the composition range of investigation.