2017/02/12 by Diego González-Moreno, Yasuhiro Shirahata, González, Diego López +11
Engineering · Materials Science · Physics and Astronomy · #Acoustic Wave Resonator Technologies #FOS: Physical sciences #Magnetic properties of thin films #Materials Science (cond-mat.mtrl-sci) #Multiferroics and related materials
paper · pdf · doi:10.48550/arxiv.1702.03553
openalex publication_date 2017/02/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report on reversible electric-field-driven magnetic domain wall motion in\na Cu/Ni multilayer on a ferroelectric BaTiO3 substrate. In our\nheterostructure, strain-coupling to ferroelastic domains with in-plane and\nperpendicular polarization in the BaTiO3 substrate causes the formation of\ndomains with perpendicular and in-plane magnetic anisotropy, respectively, in\nthe Cu/Ni multilayer. Walls that separate magnetic domains are elastically\npinned onto ferroelectric domain walls. Using magneto-optical Kerr effect\nmicroscopy, we demonstrate that out-of-plane electric field pulses across the\nBaTiO3 substrate move the magnetic and ferroelectric domain walls in unison.\nOur experiments indicate an exponential increase of domain wall velocity with\nelectric field strength and opposite domain wall motion for positive and\nnegative field pulses. Magnetic fields do not affect the velocity of magnetic\ndomain walls, but independently tailor their internal spin structure, causing a\nchange in domain wall dynamics at high velocities.\n