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Phenomenological analysis of domain width in rhombohedral BiFeO3 films

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Phenomenological analysis of domain width in rhombohedral BiFeO3 films

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Title: Phenomenological analysis of domain width in rhombohedral BiFeO3 films
Author: Huang, Chuanwei; Chen, Lang; Wang, Junling; He, Q.; Yang, S. Y.; Chu, Y. H.; Ramesh, R.
Copyright year: 2009
Abstract: The experimental domain size scaling law in epitaxial BiFeO3 films shows a different behavior from predictions of the conventional elastic domains: the (101)-type 71° domains are much wider than that of (100)- type 109° despite the larger domain-wall energy in (100) boundary. A phenomenological analysis for rhombohedral BiFeO3 film is proposed, and it reveals that both the depolarizing energy and the elastic energy are indispensable for the equilibrium domain structures. With the increase in the asymmetrical electrostatic boundary on the film surfaces, the dominant domain scaling mechanism changes from electrostatic-dependent domain structure to elastic-dependent one, which is consistent with the experimental data. The present results highlight the general role of depolarizing field in rhombohedral domain structures.
Subject: DRNTU::Engineering::Materials::Magnetic materials
Type: Journal Article
Series/ Journal Title: Physical review B
School: School of Materials Science and Engineering
Rights: © 2009 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at the following DOI: http://dx.doi.org/10.1103/PhysRevB.80.140101. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Version: Published version

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