Year: 2025
Type: article
Abstract: The interaction between surface acoustic waves and magnetization offers an efficient route for electrically controlling magnetic states. Here, we demonstrate the excitation of magnetoacoustic waves in galfenol thin films with a 28 at. % gallium composition, corresponding to the second magnetostrictive peak in bulk samples. We quantify the amplitude of the induced magnetization oscillations using magnetic imaging in an x-ray photoelectron microscope and estimate the dynamic magnetoelastic constants through micromagnetic simulations. Our findings demonstrate the potential of galfenol thin films for magnonic applications and reveal that, despite strong magnetoelastic coupling, magnetic interactions and spin-wave dispersion relations significantly influence the overall amplitude of magnetoacoustic waves.
Source: APL Materials
DOI: 10.1063/5.0237699
Institutions: Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona, Universitat de Barcelona, ALBA Synchrotron (Spain), Universidad Complutense de Madrid, Universidad de Zaragoza, Paul Drude Institute for Solid State Electronics, Forschungsverbund Berlin, Consejo Superior de Investigaciones Científicas
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,200
OpenAlex ID: W4407697147