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Destruction of spin cycloid in (111)c-oriented BiFeO3 thin films by epitaxial constraint : enhanced polarization and release of latent magnetization.

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Destruction of spin cycloid in (111)c-oriented BiFeO3 thin films by epitaxial constraint : enhanced polarization and release of latent magnetization.

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Title: Destruction of spin cycloid in (111)c-oriented BiFeO3 thin films by epitaxial constraint : enhanced polarization and release of latent magnetization.
Author: Bai, Feiming.; Wang, Junling.; Wuttig, M.; Li, Jiefang.; Wang, Naigang.; Pyatakov, A. P.; Zvezdin, A. K.; Cross, L. E.; Viehland, D.
Copyright year: 2005
Abstract: In BiFeO3 films, it has been found that epitaxial constraint results in the destruction of a space modulated spin structure. For (111)c films, relative to corresponding bulk crystals, it is shown (i) that the induced magnetization is enhanced at low applied fields; (ii) that the polarization is dramatically enhanced; whereas, (iii) the lattice structure for s111dc films and crystals is nearly identical. Our results evidence that eptiaxial constraint induces a transition between cycloidal and homogeneous antiferromagnetic spin states, releasing a latent antiferromagnetic component locked within the cycloid.
Subject: DRNTU::Engineering::Materials::Magnetic materials.DRNTU::Engineering::Materials::Microelectronics and semiconductor materials::Thin films.
Type: Journal Article
Series/ Journal Title: Applied physics letters
School: School of Materials Science and Engineering
Rights: © 2005 American Institute of Physics. This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. The paper can be found at the following DOI: http://dx.doi.org/10.1063/1.1851612. 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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