Crystallization kinetics of a-Se75Te25 − xGax (x = 0, 5, 10 and 15 at wt %) glassy system

► a-Se75Te25 − xGax (x = 0, 5, 10 and 15) glassy alloys were prepared. ► XRD and DTA analysis were characterized the studied samples. ► The activation energy for glass transition and crystallization and Avrami index are calculated. ► The crystallization mechanism has been studied also. ► The crystallization process is three-dimensional growth in these samples.