Equilibrium and Stationary Crystal Forms in the Gravitational Field

— An expression for the generalized capillary constant of an equilibrium crystal, taking into account the influence of the gravitational field, is obtained. The height limit for an equilibrium single crystal is determined. It is shown that the equilibrium form of a macrocrystal, oriented randomly in...

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Bibliographic Details
Published in:Crystallography reports 2022-04, Vol.67 (2), p.286-293
Main Author: Rakin, V. I.
Format: Article
Language:English
Subjects:
Crystal Growth
Crystallography and Scattering Methods
Crystals
Equilibrium
Gravitational fields
Low temperature
Physics
Physics and Astronomy
Single crystals
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Summary:— An expression for the generalized capillary constant of an equilibrium crystal, taking into account the influence of the gravitational field, is obtained. The height limit for an equilibrium single crystal is determined. It is shown that the equilibrium form of a macrocrystal, oriented randomly in the gravity field, cannot be described by a convex polyhedron. Thermodynamic calculations of the gravity effect on the form of a stationary growing crystal in stirred and immobile homogeneous solutions have been performed. It is shown that gravity barely affects the stationary form of a growing crystal in a thoroughly stirred solution at low temperature; however, growth in an immobile homogeneous solution leads to a significant relative decrease in the crystal height.
ISSN:1063-7745
1562-689X
DOI:10.1134/S1063774522020110