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On the Formation of Dislocation Hollow Cores on Cleaved {100} Faces of L‐Arginine Phosphate Monohydrate Single Crystals
Author(s) -
Sangwal K.,
Sanz F.
Publication year - 1997
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170320209
Subject(s) - supersaturation , cleavage (geology) , dislocation , crystallography , curvature , monolayer , materials science , radius , core (optical fiber) , chemical physics , chemistry , composite material , geometry , nanotechnology , fracture (geology) , mathematics , computer security , organic chemistry , computer science
Thermodynamic conditions and energy considerations for the formation of hollow cores at the emergence points of monolayer cleavage steps associated with screw dislocations on the cleaved {100} faces of LAP single crystals are discussed. Analysis of the formation of hollow cores and the change of the curvature of steps in the vicinity of their origins reveals that dislocations responsible for the origin of hollow cores have stress fields due to trapped mother liquor of different supersaturations. The results also show that (1) the radius of a hollow core is inversely proportional to the one‐third power of the interface supersaturation while the volume of hollow corés increases exponentially with their radius, and that (2) the strain energy associated with a dislocation is responsible for the formation of an equilibrium hollow core of a particular depth at the origins of cleavage steps associated with dislocations.