Work

Strain-induced magnetic domain morphology in Pt/CoFeB/Ir multilayers on BaTiO 3 ( 001 )

Year: 2025

Type: article

Abstract: Strain exerted by a ferroelectric substrate on a thin ferromagnetic multilayer film with an interfacial Dzyaloshinskii-Moriya interaction is a promising method of manipulating chiral magnetic spin textures. Here, we report on the strain coupling between magnetic domains in a Pt/CoFeB/Ir multilayer and ferroelectric domains in a BaTiO 3 ( 001 ) substrate. Using wide-field Kerr microscopy to image the demagnetized domain pattern, at room temperature (RT), we observe magnetic stripe domains aligned with the underlying ferroelectric domain pattern. Cooling to 13 K and subsequently warming back up to RT, there are irreversible changes to the ferroelectric domain pattern associated with structural phase transitions, and we find that magnetic stripe domains reorient to match the new ferroelectric domain structure in each phase. These results open a route to electric field manipulation of the domain morphology and chiral spin textures in thin multilayer films.

Source: Physical review. B./Physical review. B

DOI: 10.1103/zqxt-k522

Authors: Robbie G. Hunt, Khulaif Alshammari, Mannan Ali, Paul S. Keatley, Thomas A. Moore

Institutions: University of Leeds, Jouf University, University of Exeter

Language: English

Topic: Magnetic properties of thin films

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funder: Engineering and Physical Sciences Research Council

Awards: Synthetic Antiferromagnetic Skyrmions, EXTREMAG: an Exeter-based Time Resolved Magnetism Facility