Size Dependence of Domain Pattern Transfer in Multiferroic Heterostructures
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Journal Title
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School of Science |
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2014
Major/Subject
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Degree programme
Language
en
Pages
017201/1-5
Series
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
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
