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Article Dans Une Revue Journal of Non-Crystalline Solids Année : 2020

On the glass transition temperature Tg against molar volume Vm plotting in arsenoselenide glasses

Résumé

Dependence of glass transition temperature Tg (K) on overall mean bonding energy E (kJ/mol) in arsenoselenide glass reexamined under per-atom calculations is shown to obey linearized master equation Tg ≅ 418⋅(E–1.13). Compositional variations in Tg against molar volume Vm are plotted for g-AsxSe100- x taken within (0 ≤ x ≤ 65) domain assuming preferential cohesive Van der Waals (VDW) bonding between network-constituting entities. The Tg values are found to vary as inverse-αth power of Vm, attaining distinct values for different networks, in part, 0D-molecular (α=6/3= 2), 1D-chained (α=5/3), 2D-layered (α=4/3), and 3D-spatial (α=3/3=1). These variations originated from macroscopic geometry of VDW interaction are linearized in log-log presentation for networks dominated with chain-like 1D-entities (0 ≤ x<~8) and cross-linked 3D-entities (~8
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Dates et versions

hal-02443576 , version 1 (13-02-2020)

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Citer

M. Shpotyuk, J. Szlęzak, Y. Shpotyuk, C. Boussard-Plédel, B. Bureau, et al.. On the glass transition temperature Tg against molar volume Vm plotting in arsenoselenide glasses. Journal of Non-Crystalline Solids, 2020, 528, pp.119758. ⟨10.1016/j.jnoncrysol.2019.119758⟩. ⟨hal-02443576⟩
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