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Energy of Atomic Delocalization and Glass Temperature of Amorphous Substances

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Abstract

The appearance of an additional term in the glass transition criterion is substantiated. The concept is developed that glass transition occurs when the energy of thermal vibrations of the lattice per atom becomes less than the enthalpy of atomic delocalization—its ultimate displacement from the local equilibrium position. A linear relationship is ascertained between the energy of atomic delocalization and the glass transition temperature of a number of glasses. The nature of the liquid–glass transition of various classes of glassy systems is considered.

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Funding

This study was supported by the Ministry of Science and Higher Education of the Russian Federation (grant no. 3.5406.2017/8.9).

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Sanditov, D.S., Mashanov, A.A. & Darmaev, M.V. Energy of Atomic Delocalization and Glass Temperature of Amorphous Substances. Polym. Sci. Ser. A 62, 79–84 (2020). https://doi.org/10.1134/S0965545X20020054

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  • DOI: https://doi.org/10.1134/S0965545X20020054

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