Pre-crystallization kinetics of the Bi₁₀Se₉₀glass

Abstract

Differential scanning calorimetry (DSC) results of Bi10 Se90glass under non-isothermal conditions are reported. In the present work, the analyses have been focused on the endothermic peaks of the DSC curves. The models, used for calculation of the crystallization kinetics from the exothermic peaks, have been applied to obtain the pre-crystallization kinetics from the endothermic peaks. The activation energy of glass transition (Eg ), the Avrami index (n ) and the frequency factor (K0 ) of the investigated glass are 186±0.2 kJ mol-1 , 2.08 and 2.5 × 1028s-1 , respectively. The values obtained can be related to the kinetics of amorphous-crystalline transformations.