SECOND-ORDER PHASE TRANSITIONS IN CRYSTALLINE MEDIA UNDER THE TEMPERATURE EFFECTS
| Autor: | B.V. Borts, S.F. Skoromnaya, V.I. Tkachenko |
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| Rok vydání: | 2022 |
| Zdroj: | Problems of Atomic Science and Technology. :32-37 |
| DOI: | 10.46813/2022-138-032 |
| Popis: | Various approaches to describe phase transitions in crystalline media are considered: Landau phenomenological approach of second-order phase transitions as well as Kolmogorov’s, Avrami’s and Christian’s theories of crystallization. An analysis of the existing approaches indicates that they do not always adequately describe the experimental results. A qualitative model for describing the dependence of a crystalline substance heat capacity on temperature at a constant volume is proposed in this paper. The model describes the change in the number of particles of a new phase of a crystalline substance at a constant volume and is based on Einstein principle of detailed balance. An expression for metal heat capacity adequately corresponded to Dulong-Petit heat capacity is obtained. A model for describing the dependence of heat capacity on temperature in case of phase transitions is proposed. |
| Databáze: | OpenAIRE |
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