Fragility and Cooperative dynamics correlations in GexSe1-x chalcogenide glasses

Predicting the onset temperature (Tg) of Ge Se1− glass transition: a feature selection based two-stage support vector regression method

“…Ge x Se 1Àx glass system has already been extensively studied due to its glasses possessing excellent transparent property in the farinfrared wavelengths range and considered as model binary covalent glasses [1][2][3][4][5][6]. The influence of temperature on its properties is a key issue, particularly for onset temperature of glass transition (T g ) at which the amorphous material begins converting between viscous or rubbery and glassy states.…”

“…1) because of its internal structural variation with the change of component ratio x [2,[8][9][10][11][12]. It is widely accepted that the structure of Ge x Se 1Àx glass system varies from one type to another obviously and continuously at a turning point (x = 1/3) when x increases from 0 to 0.42 [5,6]. The variation tendencies of the two stages are quite different between each other.…”