A study of the crystallization kinetics of Ge-Se-Te glasses

Bulk Ge_50-xSe₅₀Te_x (x = 10, 20, 30, 40 at %) glasses have been prepared by the melt quenching technique. The crystallization of these glasses has been studied by using differential scanning calorimetery (DSC). The values of the glass transition temperature, T_g, the crystallization temperature, T_c, and the crystallization peak temperature, T_p, were found to be depend on both composition and heating rate. The investigation of crystallization kinetics indicates a double-stages crystallization process. The glass transition energy, E_g, and the crystallization activation energy, E_c, were calculated. The determined kinetic parameters have made it possible to discuss the glass forming ability.