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Disclinations and ovals in the Smectic B and E phases
Author(s) -
Demus D.,
Schiller P.,
Sharma N. K.
Publication year - 1984
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.2170190424
Subject(s) - wedge (geometry) , materials science , texture (cosmology) , plane (geometry) , phase (matter) , condensed matter physics , surface energy , crystallography , elastic energy , chemistry , thermodynamics , optics , physics , geometry , composite material , mathematics , organic chemistry , artificial intelligence , computer science , image (mathematics)
Near to the clearing temperature the formation of the texture of a B phase was investigated. The growth of the B phase is beginning with germs, in shape similar to 2π‐disclinations whic some tenths of a degree below the clearing temperature dissociate to a system of two π‐disclinations. At further lowering the temperature, the latter change to the ovals which contain a set of wedge like material with plane smectic layers. By a competition of surface free energy and elastic free energy the sequence of textures can be explained theoretically.