Ferroelastic domain walls in barium titanate - quantitative phenomenological model
Result description
Properties of ferroelecric domain walls corresponding to rotations of the spontaneous electric polarization by 90 or 180 degrees are investigated in the framework of material-specific generalized Ginzburg-Landau-Devonshire model involving long-range dipole-dipole interactions. Thickness and surface energy for these domain walls in the tetragonal and the orthorhombic phases of BaTiO3 are evaluated in the charge-free approximation using model parameters determined from independent experiments. Both typesof domain walls occur spontaneously in domain pattern simulations, although in the orthorhombic phase the 180-degree domain walls are very rare. The simulated domain patterns and domain wall properties are discussed and the relation to the pronounced anisotropy of the gradient term is pointed out.
Keywords
ferroelectric and ferroelastic domainsBaTiO3Ginzburg-Landau theory
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Ferroelastic domain walls in barium titanate - quantitative phenomenological model
Original language description
Properties of ferroelecric domain walls corresponding to rotations of the spontaneous electric polarization by 90 or 180 degrees are investigated in the framework of material-specific generalized Ginzburg-Landau-Devonshire model involving long-range dipole-dipole interactions. Thickness and surface energy for these domain walls in the tetragonal and the orthorhombic phases of BaTiO3 are evaluated in the charge-free approximation using model parameters determined from independent experiments. Both typesof domain walls occur spontaneously in domain pattern simulations, although in the orthorhombic phase the 180-degree domain walls are very rare. The simulated domain patterns and domain wall properties are discussed and the relation to the pronounced anisotropy of the gradient term is pointed out.
Czech name
Feroelastické doménové stěny v titanátu bária - kvantitativní fenomenologický model
Czech description
Byly provedeny simulace analytické výpočty vlastností devadesátistupňových a stoosmdesátistupňových doménových stěn v BaTiO3.
Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Integrated Ferroelectrics
ISSN
1058-4587
e-ISSN
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Volume of the periodical
101
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
13
Pages from-to
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UT code for WoS article
000261941900008
EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BM - Solid-state physics and magnetism
Year of implementation
2009