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On structural rearrangements near the glass transition temperature in amorphous silicaстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или ScopusДата последнего поиска статьи во внешних источниках: 27 октября 2021 г.
- Авторы: Ojovan M.I., Tournier R.F.
- Журнал: Materials
- Том: 2021
- Номер: 14
- Год издания: 2021
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Первая страница: 1
- Последняя страница: 19
- Номер статьи: 5235
- Аннотация: The formation of clusters was analyzed in a topologically disordered network of bonds ofamorphous silica (SiO2) based on the Angell model of broken bonds termed configurons. It wasshown that a fractal-dimensional configuron phase was formed in the amorphous silica above theglass transition temperature Tg. The glass transition was described in terms of the concepts of configuronpercolation theory (CPT) using the Kantor-Webman theorem, which states that the rigiditythreshold of an elastic percolating network is identical to the percolation threshold. The account ofconfiguron phase formation above Tg showed that (i) the glass transition was similar in nature tothe second-order phase transformations within the Ehrenfest classification and that (ii) althoughbeing reversible, it occurred differently when heating through the glass–liquid transition to thatwhen cooling down in the liquid phase via vitrification. In contrast to typical second-order transformations,such as the formation of ferromagnetic or superconducting phases when the more orderedphase is located below the transition threshold, the configuron phase was located above it.
- Добавил в систему: Ожован Михаил Иванович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | On_Structural_Rearrangements_Materials-14-05235.pdf | 1,3 МБ | 16 сентября 2021 [Ojovan] |