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Domain walls of ferroelectric BaTiO3.sub.3./sub. within the Ginzburg-Landau-Devonshire phenomenological model
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SYSNO ASEP 0354433 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Domain walls of ferroelectric BaTiO33 within the Ginzburg-Landau-Devonshire phenomenological model Author(s) Márton, Pavel (FZU-D) RID, ORCID
Rychetský, Ivan (FZU-D) RID, ORCID
Hlinka, Jiří (FZU-D) RID, ORCIDSource Title Physical Review. B - ISSN 1098-0121
Roč. 81, č. 14 (2010), 144125/1-144125/11Number of pages 11 s. Language eng - English Country US - United States Keywords ferroelectric ; ferroelastic ; domain walls ; perovskite ; phenomenological model Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects GA202/09/0430 GA ČR - Czech Science Foundation (CSF) GAP204/10/0616 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z10100520 - FZU-D (2005-2011) UT WOS 000277210200055 DOI 10.1103/PhysRevB.81.144125 Annotation Mechanically compatible and electrically neutral domain walls in tetragonal, orthorhombic, and rhombohedral ferroelectric phases of BaTiO3 are systematically investigated in the framework of the phenomenological Ginzburg-Landau-Devonshire model. Polarization and strain profiles within domain walls are calculated numerically and within an approximation leading to the quasi-one-dimensional analytic solutions. Domain-wall thicknesses and energy densities are estimated for all mechanically compatible and electrically neutral domain-wall species in the entire temperature range of ferroelectric phases. The calculation indicates that the lowest-energy structure of the 109° wall and few other domain walls in the orthorhombic and rhombohedral phases resemble Bloch walls known from magnetism. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2011
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