Calorimetric studies of chalcogenide glasses in the system Se-S

Differential scanning calorimetry measurements under non-isothermal conditi ons were performed on the chalcogenide glasses Se98-x S-x Sn-2 (x = 8, 18) and Se-77 S-20 X-3 (X = Sn, Pb). The values of the glass transition tempera ture and crystallization temperature were found to depend on the heating ra te. The activation energy for the glass transition and the activation energ y for crystallization were calculated from the heating rate-dependence. The thermal stability and the glass forming tendency were calculated and they were found to have the same trend.