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

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Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2012
Major/Subject
Mcode
Degree programme
Language
en
Pages
094423/1-4
Series
Physical Review B, Volume 85, Issue 9
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%.
Description
Keywords
domain walls, ferromagnetism, ferroelectricity, magnetostriction, magnetic anisotropy, micromagnetics
Other note
Citation
Franke, Kevin J. A. & Lahtinen, Tuomas H. E. & van Dijken, Sebastiaan. 2012. Field tuning of ferromagnetic domain walls on elastically coupled ferroelectric domain boundaries. Physical Review B. Volume 85, Issue 9. 094423/1-4. ISSN 1550-235X (electronic). DOI: 10.1103/physrevb.85.094423