Abstract
In this work, the activation energies of crystallization of amorphous Sb
9.1Te
20.1Se
70.8 have been studied under non-isothermal conditions using a differential scanning calorimetric (DSC) technique. The analysis focuses on the effect of temperature (413
≤
T
≤
437
K) on the DSC results. The three isoconversional methods of Friedman, Kissinger–Akahira–Sunose (KAS) and Vyazovkin were used to determine the variation of the activation energy for crystallization with temperature,
E
α
(
T). The KAS and Vyazovkin methods gave identical values, and the range of
E
α
(
T) was found to vary from 128.7 down to 77.8
kJ
mol
−1, while the Friedman method gave lower values with
E
α
(
T) from 84.1 to 31.2
kJ
mol
−1. The effects of annealing were revealed by studying the morphology of the samples using scanning electron microscopy.