Abstract
The dynamics of the glass transition in Se76Te21Sb3 chalcogenide glass was studied using Differential scanning calorimetry (DSC). The experimental result of the kinetic glass transition phenomenon, at different heating rates (5 - 40 K/min), was analyzed on the basis of the relaxation process occurring in the transition temperature range. The fragility index m of the glass was estimated from the measurements of the activation energy of the relaxation process, which characterizes the glass transition.