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Transitions between Equilibrium and Nonequilibrium Phenomena in the Description of Crystal Growth.

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Title: Transitions between Equilibrium and Nonequilibrium Phenomena in the Description of Crystal Growth.
Authors: Rakin, V. I.1 (AUTHOR) rakin@geo.komisc.ru
Source: Crystallography Reports. Aug2024, Vol. 69 Issue 4, p587-599. 13p.
Subjects: Crystal growth, Isothermal processes, Dislocations in crystals, Thermodynamic equilibrium, Screw dislocations, Nonequilibrium thermodynamics
Abstract: The close intertwining of equilibrium and nonequilibrium thermodynamic representations and transitions between two limiting principles of thermodynamics: the second beginning and the principle of least coercion (minimum entropy production in the stationary regime) constitute the main content of the phenomenological theories of crystal growth. The difference of the basic postulates of two sections of thermodynamics forces to discuss the problems of reversibility and irreversibility of time, scales of observed phenomena, and rules of conjugation of thermodynamic forces and flows in theories of crystal growth. A variant of the solution of some conjugation problems is shown on the example of the fluctuation model of dislocation crystal growth, which is based on the stationary isothermal process of thermodynamic free energy fluctuations. In the case of the limiting mode of adsorption of impurities on the crystal face according to the Langmuir model, the free-energy fluctuations characterized by the absence of the memory effect make it possible to identify three chemical potentials of building particles, which determine the corresponding values of solution supersaturations realized at different scale levels at the growing crystal face containing a screw dislocation. The supersaturations control quasi-equilibrium and nonequilibrium thermodynamic processes that constitute a unified dislocation mechanism of crystal growth. [ABSTRACT FROM AUTHOR]
Copyright of Crystallography Reports is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Transitions between Equilibrium and Nonequilibrium Phenomena in the Description of Crystal Growth.
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  Data: <searchLink fieldCode="DE" term="%22Crystal+growth%22">Crystal growth</searchLink><br /><searchLink fieldCode="DE" term="%22Isothermal+processes%22">Isothermal processes</searchLink><br /><searchLink fieldCode="DE" term="%22Dislocations+in+crystals%22">Dislocations in crystals</searchLink><br /><searchLink fieldCode="DE" term="%22Thermodynamic+equilibrium%22">Thermodynamic equilibrium</searchLink><br /><searchLink fieldCode="DE" term="%22Screw+dislocations%22">Screw dislocations</searchLink><br /><searchLink fieldCode="DE" term="%22Nonequilibrium+thermodynamics%22">Nonequilibrium thermodynamics</searchLink>
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  Data: The close intertwining of equilibrium and nonequilibrium thermodynamic representations and transitions between two limiting principles of thermodynamics: the second beginning and the principle of least coercion (minimum entropy production in the stationary regime) constitute the main content of the phenomenological theories of crystal growth. The difference of the basic postulates of two sections of thermodynamics forces to discuss the problems of reversibility and irreversibility of time, scales of observed phenomena, and rules of conjugation of thermodynamic forces and flows in theories of crystal growth. A variant of the solution of some conjugation problems is shown on the example of the fluctuation model of dislocation crystal growth, which is based on the stationary isothermal process of thermodynamic free energy fluctuations. In the case of the limiting mode of adsorption of impurities on the crystal face according to the Langmuir model, the free-energy fluctuations characterized by the absence of the memory effect make it possible to identify three chemical potentials of building particles, which determine the corresponding values of solution supersaturations realized at different scale levels at the growing crystal face containing a screw dislocation. The supersaturations control quasi-equilibrium and nonequilibrium thermodynamic processes that constitute a unified dislocation mechanism of crystal growth. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Crystallography Reports is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – SubjectFull: Dislocations in crystals
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      – SubjectFull: Screw dislocations
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              Text: Aug2024
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