GLASS TRANSITION CONDITION IN THE MODEL OF DELOCALIZED ATOMS // BSU Bulletin. Mathematics, Informatics. - 2021. №4. . - С. 19-25.

GLASS TRANSITION CONDITION IN THE MODEL OF DELOCALIZED ATOMS

DOI: 10.18101/2304-5728-2021-4-19-25 UDK: 532.2

A brief analysis of the kinetic criteria of glass transition by Bartenev et al. Authors is carried out. Based on the analysis and generalization with the involvement of the model of delocalized atoms, a new condition for the liquid-glass transition is proposed. The formulation of the proposed condition for the liquid-glass transition is given. For inorganic glasses, according to experimental data from other sources, the proposed modified glass transition condition is calculated. The results obtained are in satisfactory agreement with the typical estimates of the glass transition criterion used by various authors. In contrast to the glass transition criteria published in the articles of other researchers, here, in terms of the model used, the physical meaning of the empirical constant used in this criterion is determined. The proposed physical meaning of this coefficient is reduced to the part of the fluctuation volume frozen at the glass transition temperature to within the logarithm of the reciprocal of this value.

glass transition condition, model, atom delocalization, fluctuation volume, criterion, liquid-glass transition.