Control of Stripe-Domain-Wall Magnetization in Multilayers Featuring Perpendicular Magnetic Anisotropy

Ruslan Salikhov, Fabian Samad, Benny Böhm, Sebastian Schneider, Darius Pohl, Bernd Rellinghaus, Aladin Ullrich, Manfred Albrecht, Jürgen Lindner, Nikolai S. Kiselev, and Olav Hellwig
Phys. Rev. Applied 16, 034016 – Published 9 September 2021

Abstract

We report on the controlled switching of domain-wall (DW) magnetization in aligned stripe-domain structures, stabilized in [Co(0.44 nm)/Pt(0.7 nm)]X(X=48, 100, 150) multilayers with perpendicular magnetic anisotropy. The switching process, induced by an external magnetic field, is monitored by measuring the evolution of the in-plane magnetization. We show that the remanent in-plane magnetization originates from the polarization of the Bloch-type DWs. With micromagnetic simulations, we reveal that the reversal of the DW polarization is the result of the emergence and collapse of horizontal Bloch lines within the DWs at particular strengths of the external magnetic field, applied opposite to the DW polarization. Our findings are relevant for DW-based magnonics and bubble-skyrmion applications in magnetic multilayers.

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  • Received 21 April 2021
  • Revised 29 June 2021
  • Accepted 28 July 2021

DOI:https://doi.org/10.1103/PhysRevApplied.16.034016

© 2021 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Ruslan Salikhov1,*, Fabian Samad1,2, Benny Böhm2, Sebastian Schneider3, Darius Pohl3, Bernd Rellinghaus3, Aladin Ullrich4, Manfred Albrecht4, Jürgen Lindner1, Nikolai S. Kiselev5,†, and Olav Hellwig1,2

  • 1Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, Dresden 01328, Germany
  • 2Institute of Physics, Chemnitz University of Technology, Reichenhainer Strasse 70, Chemnitz 09107, Germany
  • 3Dresden Center for Nanoanalysis, cfaed, Technische Universität Dresden, Dresden 01069, Germany
  • 4Institute of Physics, University of Augsburg, Universitätsstrasse 1, Augsburg 86159, Germany
  • 5Peter Grünberg Institute and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, Jülich 52425, Germany

  • *r.salikhov@hzdr.de
  • n.kiselev@fz-juelich.de

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Vol. 16, Iss. 3 — September 2021

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