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Free keywords:
Acoustic surface wave devices; Acoustic wave propagation; Acoustic waves; Cobalt; Dichroism; Cobalt thin films; Magnetic layers; Magnetic system; Magneto-acoustic waves; Magnetoelastic effects; Nickel and cobalts; Nickel thin film; Piezoelectric; Surface acoustic waves; X ray microscopy; Nickel
Abstract:
We use surface acoustic waves of 1 and 3 GHz in hybrid piezoelectric-magnetic systems with either nickel or cobalt as a magnetic layer to generate magnetoacoustic waves and directly image them using stroboscopic x-ray magnetic circular dichroism imaging. Our measurements visualize and quantify the amplitudes of both acoustic and magnetic components of the magnetoacoustic waves, which are generated in the ferromagnetic layer and can propagate over millimeter distances. Additionally, we quantified the magnetoelastic strain component for nickel and cobalt through micromagnetic simulations. © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
