Electric field driven magnetic domain wall motion in ferromagnetic-ferroelectric heterostructures

Ben Van de Wiele, Lasse Laurson, Kévin J. A. Franke, Sebastiaan van Dijken
2014 Applied Physics Letters  
We investigate magnetic domain wall (MDW) dynamics induced by applied electric fields in ferromagnetic-ferroelectric thin-film heterostructures. In contrast to conventional driving mechanisms where MDW motion is induced directly by magnetic fields or electric currents, MDW motion arises here as a result of strong pinning of MDWs onto ferroelectric domain walls (FDWs) via local strain coupling. By performing extensive micromagnetic simulations, we find several dynamical regimes, including
more » ... s, including instabilities such as spin wave emission and complex transformations of the MDW structure. In all cases, the time-averaged MDW velocity equals that of the FDW, indicating the absence of Walker breakdown.
doi:10.1063/1.4860963 fatcat:xhsmkk5hyngrld5ynxjzm7qgii