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Ferroelectric charged domain walls in an applied electric field
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SYSNO ASEP 0382300 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Ferroelectric charged domain walls in an applied electric field Tvůrce(i) Gureev, M.Y. (CH)
Mokrý, Pavel (UFP-V) RID
Tagantsev, A.K. (CH)
Setter, N. (CH)Zdroj.dok. Physical Review B - ISSN 1098-0121
Roč. 86, č. 10 (2012), s. 104104-104104Poč.str. 10 s. Forma vydání web - web Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova Charged ferroelectric domain walls ; thermodynamics ; ferroelectric domains ; CRYSTALS ; INVERSION ; TITANATE Vědní obor RIV BM - Fyzika pevných látek a magnetismus CEP ED2.1.00/03.0079 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy CEZ AV0Z20430508 - UFP-V (2005-2011) UT WOS 000308459700002 DOI https://doi.org/10.1103/PhysRevB.86.104104 Anotace 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 Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2013
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