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Transition State of Matter in the Fluctuation Model of Crystal Growth.

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Title: Transition State of Matter in the Fluctuation Model of Crystal Growth.
Authors: Rakin, V. I.1 (AUTHOR) rakin@geo.komisc.ru
Source: Crystallography Reports. Oct2024, Vol. 69 Issue 5, p771-779. 9p.
Subjects: Crystal growth, Crystal models, Phases of matter, Crystal surfaces, Surface energy
Abstract: Two mechanisms of the effect of the transition state of building particles (activated complexes, according to Arrhenius) on the crystal growth rate in the framework of the fluctuation model of dislocation growth are discussed. The transition state clusters adsorbed on the surface of a growing face act as an impurity lowering the crystal surface energy at instants between free energy fluctuations. Thus, the transition state of the crystallizing material, according to the first mechanism, affects the relaxation rate of the secondary adsorption of impurities and shortens the attachment time of building particles to the crystal face. Other clusters formed in solution reduce the number of free particles and, at low concentrations of the building material, may decrease the crystallization rate. Nevertheless, in a natural multicomponent crystallization environment, under the conditions of low building material concentration, essential thermal crystallization effect, and small deviations from equilibrium, the role of the transition state in the crystal growth is on the whole insignificant. [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: Two mechanisms of the effect of the transition state of building particles (activated complexes, according to Arrhenius) on the crystal growth rate in the framework of the fluctuation model of dislocation growth are discussed. The transition state clusters adsorbed on the surface of a growing face act as an impurity lowering the crystal surface energy at instants between free energy fluctuations. Thus, the transition state of the crystallizing material, according to the first mechanism, affects the relaxation rate of the secondary adsorption of impurities and shortens the attachment time of building particles to the crystal face. Other clusters formed in solution reduce the number of free particles and, at low concentrations of the building material, may decrease the crystallization rate. Nevertheless, in a natural multicomponent crystallization environment, under the conditions of low building material concentration, essential thermal crystallization effect, and small deviations from equilibrium, the role of the transition state in the crystal growth is on the whole insignificant. [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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        Value: 10.1134/S1063774524601448
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      – Code: eng
        Text: English
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        PageCount: 9
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      – SubjectFull: Crystal growth
        Type: general
      – SubjectFull: Crystal models
        Type: general
      – SubjectFull: Phases of matter
        Type: general
      – SubjectFull: Crystal surfaces
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      – SubjectFull: Surface energy
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      – TitleFull: Transition State of Matter in the Fluctuation Model of Crystal Growth.
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              Text: Oct2024
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