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Phase field modelling of ferroelectric-ferromagnetic interfaces

  • Magneto-electric coupling along interfaces between ferroelectric and ferromagneticmaterials allows the magnetization in ferromagnetic layers to be controlled by electrical fields.The coupling effect is mainly due to the deformation coupling between the layers. Thus, furthercoupling effects at the interfaces are neglected in this contribution. Phase field formulationsare used to model the polarization and magnetization in the ferroelectric and ferromagneticlayers, respectively. A coupling between the phase field and the strains is introduced in eachlayer in combination with a mechanical coupling at the interface. The numerical formulationfor the ferroelectric layer is taken from literature. A special focus is set on the discretization ofthe length-constrained order parameter in the ferromagnetic layer. We show a new approachto enforce this constraint and provide a numerical simulation which illustrates the magneto-electric coupling effect.

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Metadaten
Author: Wolfgang DornischORCiD, Ralf Müller
URN:urn:nbn:de:hbz:464-20180702-085433-3
URL:https://duepublico.uni-duisburg-essen.de/servlets/DocumentServlet?id=46481
DOI:https://doi.org/10.17185/duepublico/46481
ISBN:3-9818074-4-8
ISBN:978-3-9818074-4-8
Title of the source (English):Proceedings of the Third Seminar on The Mechanics of Multifunctional Materials : Physikzentrum Bad Honnef June 11 - 15, 2018
Publisher:Universität Duisburg-Essen
Place of publication:Essen
Editor: Jörg Schröder, Doru C. Lupascu, Heiko Wende, Dominik Brands
Document Type:Conference publication not peer-reviewed
Language:English
Year of publication:2018
First Page:93
Last Page:96
Series ; volume number:Report ; No. 18
Faculty/Chair:Fakultät 6 Architektur, Bauingenieurwesen und Stadtplanung / FG Statik und Dynamik
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