The effect of indium additive on crystallization kinetics and thermal stability of Se–Te–Sn chalcogenide glasses

Abstract

The crystallization kinetics of bulk Se 90− x Te 5Sn 5In x ( x=0, 3, 6 and 9) multi-component chalcogenide glasses have been studied using differential scanning calorimetry (DSC) with heating rates 5, 10, 15 and 20 K/min under non-isothermal conditions. Values of various kinetic parameters of crystallization, such as onset crystallization temperature ( T c ), peak crystallization temperature ( T p ), activation energy of crystallization ( E c ), rate constant ( K p ), Hruby number ( K gl ) and the order parameter ( n) have been determined. It was found that activation energy of crystallization and rate constant ( K p ) are minimum at 9 at% In. On the basis of the obtained experimental data the temperature difference ( T c −T g ) and K gl increase with In concentration, which further indicates that 9 at% In glass is most thermally stable in the entire composition range of investigation.