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 Pis'ma v Zh. Èksper. Teoret. Fiz., 2018, Volume 107, Issue 10, Pages 662–667 (Mi jetpl5578)

CONDENSED MATTER

Change in the crystallization features of supercooled liquid metal with an increase in the supercooling level

B. N. Galimzyanov, D. T. Yarullin, A. V. Mokshin

Kazan Federal University, Kazan, Russia

Abstract: The process of homogeneous crystal nucleation has been considered in a model liquid, where the interparticle interaction is described by a short-range spherical oscillatory potential. Mechanisms of initiating structural ordering in the liquid at various supercooling levels, including those corresponding to an amorphous state, have been determined. The sizes and shapes of formed crystal grains have been estimated statistically. The results indicate that the mechanism of nucleation occurs throughout the entire considered temperature range. The crystallization of the system at low supercooling levels occurs through a mononuclear scenario. A high concentration of crystal nuclei formed at high supercooling levels (i.e., at temperatures comparable to and below the glass transition temperature $T_g$) creates the semblance of the presence of branched structures, which is sometimes erroneously interpreted as a signature of phase separation. The temperature dependence of the maximum concentration of crystal grains demonstrates two regimes the transition between which occurs at a temperature comparable to the glass transition temperature $T_g$.

 Funding Agency Grant Number Ministry of Education and Science of the Russian Federation 3.2166.2017/4.6 Russian Foundation for Basic Research 18-32-00021

DOI: https://doi.org/10.7868/S0370274X18100089

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English version:
Journal of Experimental and Theoretical Physics Letters, 2018, 107:10, 629–634

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Document Type: Article
Revised: 06.04.2018

Citation: B. N. Galimzyanov, D. T. Yarullin, A. V. Mokshin, “Change in the crystallization features of supercooled liquid metal with an increase in the supercooling level”, Pis'ma v Zh. Èksper. Teoret. Fiz., 107:10 (2018), 662–667; JETP Letters, 107:10 (2018), 629–634

Citation in format AMSBIB
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