학술논문
Phase-field modelling of 180° 'Bloch walls' in rhombohedral BaTiO3.
Document Type
Article
Source
Subject
*BARIUM compounds
*PHASE transitions
*SIMULATION methods & models
*ELECTRIC fields
*FIELD theory (Physics)
*MAGNETIZATION
*FERROMAGNETIC materials
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Language
ISSN
0141-1594
Abstract
This article describes investigations of 180° walls in rhombohedral BaTiO3 in the framework of generalized Ginzburg-Landau-Devonshire model, using phase-field simulation approach. It is demonstrated that the 180° wall with the normal parallel to [1-10] direction has a Bloch-like character. Its domain profile can be understood as a pair of very close 71° and 109° walls, which can be continuously separated by a strong transverse electric field. The intermediate region can be considered as a few nanometers thick monoclinic domain. [ABSTRACT FROM AUTHOR]