Amorphous to crystalline phase transition in glassy Se₆₅Te₂₀Ag₁₅ alloy

Abstract

In the present work, the amorphous to crystalline phase transition of chalcogenide glass Se₆₅Te₂₀Ag₁₅ has been studied using differential scanning calorimetric (DSC) measurements. The heating rate dependence of crystallization peaks has been used for the determination of activation energies of glass transition (E _g) and crystallization (E _c). Different non-isothermal methods have been used for this purpose. Other useful kinetic parameters such as the order parameter (n), the numerical factor of crystallization mechanism (m) and the frequency factor (K _o) of the rate constant (K) have been also determined.

Keywords:

• chalcogenide glasses
• differential scanning calorimetry
• amorphous to crystalline phase transition