Field tuning of ferromagnetic domain walls on elastically coupled ferroelectric domain boundaries

Kévin J. A. Franke, Tuomas H. E. Lahtinen, and Sebastiaan van Dijken
Phys. Rev. B 85, 094423 – Published 23 March 2012

Abstract

We report on the evolution of ferromagnetic domain walls during magnetization reversal in elastically coupled ferromagnetic-ferroelectric heterostructures. Using optical polarization microscopy and micromagnetic simulations, we demonstrate that the spin rotation and width of ferromagnetic domain walls can be accurately controlled by the strength of the applied magnetic field if the ferromagnetic walls are pinned onto 90 ferroelectric domain boundaries. Moreover, reversible switching between magnetically charged and uncharged domain walls is initiated by magnetic field rotation. Switching between both wall types reverses the wall chirality and abruptly changes the width of the ferromagnetic domain walls by up to 1000%.

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  • Received 20 December 2011

DOI:https://doi.org/10.1103/PhysRevB.85.094423

©2012 American Physical Society

Authors & Affiliations

Kévin J. A. Franke, Tuomas H. E. Lahtinen, and Sebastiaan van Dijken*

  • NanoSpin, Department of Applied Physics, Aalto University School of Science, P.O. Box 15100, FI-00076 Aalto, Finland

  • *sebastiaan.van.dijken@aalto.fi

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Issue

Vol. 85, Iss. 9 — 1 March 2012

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