A study of the crystallization kinetics in Se68Ge22Pb10 chalcogenide glass

Differential scanning calorimetry (DSC) is performed at different heating rates under non-isothermal conditions to study the crystallization kinetics of Se68Ge22Pb10 chalcogenide glass. Different kinetic parameters such as the activation energy of crystallization (E-c), the order parameter (n), the rate constant and its frequency factor have been determined. Four different non-isothermal methods Kissinger's method, Matusita-Sakka theory, Augis-Bennett approximation and Ozawa-Chen method have been used in the present study. The average value of activation energy of crystallization E-c is 1.477 eV. The average value of Avrami's index it is 3.61, which indicates that in the glassy Se68Ge22Pb10, two crystallization (two- and three-dimensional growth) mechanisms are working simultaneously during its amorphous to crystalline transformation.