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Title: Hydrodynamic theory of freezing: nucleation and polycrystalline growth
Authors: Podmaniczky, Frigyes
Toth, Gyula I.
Tegze, Gyorgy
Granasy, Laszlo
Issue Date: 2017
Publisher: © American Physical Society
Citation: PODMANICZKY, F. ...et al., 2017. Hydrodynamic theory of freezing: nucleation and polycrystalline growth. Physical Review E, 95: 052801.
Abstract: Structural aspects of crystal nucleation in undercooled liquids are explored using a nonlinear hydrodynamic theory of crystallization proposed recently [G. I. Toth et al., J. Phys.: Condens. Matter 26, 055001 (2014)], which is based on combining fluctuating hydrodynamics with the phase-field crystal theory. We show that in this hydrodynamic approach not only homogeneous and heterogeneous nucleation processes are accessible, but also growth front nucleation, which leads to the formation of new (differently oriented) grains at the solid-liquid front in highly undercooled systems. Formation of dislocations at the solid-liquid interface and interference of density waves ahead of the crystallization front are responsible for the appearance of the new orientations at the growth front that lead to spherulite-like nanostructures.
Description: This paper was accepted for publication in the journal Physical Review E and the definitive published version is available at https://doi.org/10.1103/PhysRevE.95.052801
Sponsor: This work has been supported by NKFIH, Hungary under contract No OTKA-K-115959, by the ESA MAP/PECS projects MAGNEPHAS III (Contract No 40000110756/11/NL/KML) and GRADECET (Contract No 40000110759/11/NL/KML). G. Tegze is a grantee of the Janos Bolyai Scholarship of the MTA, Hungary.
Version: Accepted for publication
DOI: 10.1103/PhysRevE.95.052801
URI: https://dspace.lboro.ac.uk/2134/27268
Publisher Link: https://doi.org/10.1103/PhysRevE.95.052801
ISSN: 2470-0045
Appears in Collections:Published Articles (Maths)

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