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Ferroelectric charged domain walls in an applied electric field
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SYSNO ASEP 0382300 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Ferroelectric charged domain walls in an applied electric field Author(s) Gureev, M.Y. (CH)
Mokrý, Pavel (UFP-V) RID
Tagantsev, A.K. (CH)
Setter, N. (CH)Source Title Physical Review B - ISSN 1098-0121
Roč. 86, č. 10 (2012), s. 104104-104104Number of pages 10 s. Publication form web - web Language eng - English Country US - United States Keywords Charged ferroelectric domain walls ; thermodynamics ; ferroelectric domains ; CRYSTALS ; INVERSION ; TITANATE Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects ED2.1.00/03.0079 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z20430508 - UFP-V (2005-2011) UT WOS 000308459700002 DOI https://doi.org/10.1103/PhysRevB.86.104104 Annotation The interaction of electric fieldwith charged domainwalls in ferroelectrics is theoretically addressed.Ageneral expression for the force acting per unit area of a charged domain wall carrying free charge is derived. It is shown that, in proper ferroelectrics, the free charge carried by the wall is dependent on the size of the adjacent domains. As a result, the mobility of such domain wall (with respect to the applied field) is sensitive to the parameters of the domain pattern containing this wall. The problem of the force acting on a charged planar 180◦ domain wall normal to the polarization direction in a periodic domain pattern in a proper ferroelectric is analytically solved in terms of Landau theory. The poling of a crystal containing such pattern, stabilized by the pinning pressure, is also considered. Except for a special situation, the presence of charge domain walls makes poling more difficult.¨The results obtained are also applicable to zigzag walls under the condition that Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2013
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