Study of glass transition process in quasi-binary As2S3–CdS chalcogenides

Abstract The kinetics of the glass transition in the (As 2 S 3 ) 1 − x (CdS) x (x = 0, 2, 5) chalcogenide glass have been investigated using differential scanning calorimetry (DSC) at five different heating rates under non-isothermal conditions. Two approaches, namely Moynihan and Kissinger, were used to calculate the relaxation activation energy ( E g ) from the heating rate dependence of the glass transition temperature ( T g ). The variability of the activation energy with temperature was correlated with the dynamic fragility parameter ( m ); these parameters as well as the jump of heat capacity (Δ C p ) and coordination number r > are also calculated. Based on this calculations it was concluded how much impact of the addition of CdS to the As 2 S 3 matrix is on the thermal properties of these glasses.