CALORIMETRIC STUDIES OF THE GLASSY ALLOYS IN THE GE-SE-TE SYSTEM

Calorimetric studies of chalcogenide alloy glasses Ge50-xSe50Tex (x = 10, 20, 40at%) have been performed by continuous heating rates. The cr ystallization mechanism has been studied by differential scanning calo rimeter (DSC). scanning electron microscopy (SEM) and X-ray diffractio n. From the heating rate dependence of the glass transition temperatur e T-g and the crystallization peak temperature T-p, the kinetic parame ters of crystallization were calculated and their composition dependen ce were discussed. The kinetic parameters determined have made it poss ible to discuss the glass forming ability as well as the different typ es of nucleation and crystal growth exhibited by the studied chalcogen ide glasses.