Abstract

The article investigates the evolution of glass transition temperature (T_g) with variation of chemical compositions in Ge-Se chalcogenide glasses, focusing on the correlation between dynamical parameter T_g and static parameter compactness (δ). We experimentally measure T_g for various Ge-Se compositions and explore different fitting models. The author initially fit the log (T_g) against the average coordination number. This paper provides valuable insights into the kinetic and static properties of Ge-Se glasses, showcasing an innovative application of the modified Gibbs-Di-Marzio equation. Through this analysis, we are able to ascertain that the constant β in the Gibbs-Di-Marzio equation is dependent on the ratio of two temperatures and that the value of β (0.74) derived from the fit, while the value of β = 0.72134 derived from the theory for the Ge-Se binary system. We are extending this empirical Gibbs-Di-Marzio form in another way to enrich our scientific research for Ge-Se binary system.

Keywords:Chalcogenide glasses; Glass transition temperature; Compactness; Chemical compositions; Glass dynamics