Size Dependence of Domain Pattern Transfer in Multiferroic Heterostructures
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© 2014 American Physical Society (APS). This is the accepted version of the following article: ranke, Kevin J. A. & Lopez Gonzalez, Diego & Hämäläinen, Sampo J. & van Dijken, Sebastiaan. 2014. Size Dependence of Domain Pattern Transfer in Multiferroic Heterostructures. Physical Review Letters. Volume 112, Issue 1. 017201/1-5. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.112.017201, which has been published in final form at http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.112.017201
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Date
2014
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Language
en
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017201/1-5
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Physical Review Letters, Volume 112, Issue 1
Abstract
Magnetoelectric coupling in multiferroic heterostructures can produce large lateral modulations of magnetic anisotropy enabling the imprinting of ferroelectric domains into ferromagnetic films. Exchange and magnetostatic interactions within ferromagnetic films oppose the formation of such domains. Using micromagnetic simulations and a one-dimensional model, we demonstrate that competing energies lead to the breakdown of domain pattern transfer below a critical domain size. Moreover, rotation of the magnetic field results in abrupt transitions between two scaling regimes with different magnetic anisotropy. The theoretical predictions are confirmed by experiments on CoFeB/BaTiO3 heterostructures.Description
Keywords
magnetic domains, multiferroics, micromagnetics, magnetization reversal
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Citation
Franke, Kevin J. A. & Lopez Gonzalez, Diego & Hämäläinen, Sampo J. & van Dijken, Sebastiaan. 2014. Size Dependence of Domain Pattern Transfer in Multiferroic Heterostructures. Physical Review Letters. Volume 112, Issue 1. 017201/1-5. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.112.017201