Calorimetric studies in Se75Te25xSnx chalcogenide glasses

Glass transition kinetics and crystallization mechanism in Se90Cd8Bi2 and Se90Cd6Bi4 chalcogenide glasses

“…In the temperature range of investigation, the DSC curves are characterized by the evident of two peaks: Endothermic peak corresponds to the glass transition phenomenon which is represented by the glass transition temperature (T g ), followed by exothermic peak corresponds to the crystallization process and is represented by the onset (T c ) and peak (T p ) temperatures of crystallization. Both T g and T c have been defined [9,10] as the temperatures which correspond to the intersection of two linear portions adjoining the transition elbow of the DSC traces in the endothermic and exothermic directions, respectively, as shown in Fig. 1.…”

“…A great deal of these researches has been focused on studying the glass transition kinetics [2][3][4][5][6][7][8] and the crystallization mechanism [9][10][11][12][13][14][15]. The related parameters of these transformations are important for better understanding of the physics of these materials and for determination of the useful range of operating temperature at which these materials may be utilized in a specific technological application before crystallization takes place [9,14].…”

Effect of ionic irradiation on the pre-exponential factor of thermally activated crystallization in Co66Si16B12Fe4Mo2 metallic glass

“…Such structural effects usually produce pronounced changes in physical properties of glass including a lowering of the glass transition temperature, a lowering of the optical band gap and an increase of molar volumes [25]. The evidence of phase separation in terms of double exothermic peaks (crystallization peaks) has been reported by various workers [26][27][28][29][30].…”

Composition dependence of effective thermal conductivity and effective thermal diffusivity of Se100−xInx (x=0, 5, 10, 15 and 20) chalcogenide glasses

“…Indium atoms also make bond with Se and are dissolved in the Se chains. Therefore, the addition of In breaks the Se chain into mixed rings to satisfy its coordination requirements and to form crosslinking structure [12]. The behavior of l e and c e with In concentration in selenium as shown in Figs.…”