Abstract
Binary Si
12.5
Te
87.5
glass was prepared using the melt-quench technique. Differential scanning calorimetry measurements of the obtained glass measured at different heating rates (10 ≤
α
≤ 70 K/min) have shown three, one endo- and two exothermic, peaks. The glass transition kinetics have been analyzed using the isoconversional (model-free) methods in addition to the model-fitting method. The analysis of the present data shows that the glass transition kinetics are not constant values but vary with the transformed extent (
x
) and hence with temperature of the specimen. Non-linear decrease of
E
with increase in the transformed extent could be attributed to a complicated mechanism. Based on the peak shape of
n
(
α
) relation, one concludes that two competing mechanisms are working together during transformation of the solid glass to supercooled liquid state. A good agreement between the experimental and the reconstructed (
x
–
T
) curves confirms the validity of the applied models.