Abstract
Calorimetric studies of chalcogenide alloy glasses Ge 50 − x Se 50Te x ( x = 10, 20, 40 at%) have been performed by continuous heating rates. The crystallization mechanism has been studied by differential scanning calorimeter (DSC), scanning electron microscopy (SEM) and X-ray diffraction. From the heating rate dependence of the glass transition temperature T g and the crystallization peak temperature T p, the kinetic parameters of crystallization were calculated and their composition dependence were discussed. The kinetic parameters determined have made it possible to discuss the glass forming ability as well as the different types of nucleation and crystal growth exhibited by the studied chalcogenide glasses.
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