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A study of ferroelectric domain patterns in orthorhobic KNbO 3 with optical microscopy
Author(s) -
Jun Chen,
Wenshan Wang,
Qi Li,
Duan Feng
Publication year - 1988
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.2170230607
Subject(s) - domain (mathematical analysis) , ferroelectricity , materials science , surface (topology) , microscopy , optics , crystallography , condensed matter physics , geometry , optoelectronics , physics , chemistry , mathematics , mathematical analysis , dielectric
Ferroelectiric domain patterns in natural surface layers of Czochralski as‐grown crystals are very complicated. The inner domain patterns are comparatively simple and consist of a regular arrays of so‐called thin lens‐like 90° domains. Only few inner 60° and 120° domains crossing the 90° domain arrays are observed. The inversion or 180° domains are shape‐like separated islands. The 60° microdomains are easily introduced into the surface layers during the specimen processing. There are some elastic interactions between the different kinds of ferroelectric domain walls, the orientations of which are in good coincidence with the theory proposed by Janovec.