Magnetoacoustic waves in a highly magnetostrictive Fe72Ga28 thin film
Source abstract
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.
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Research context
OpenAlex topics: Magnetic Properties and Applications · Magnetic properties of thin films · Metallic Glasses and Amorphous Alloys
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Departament de Física de la Matèria Condensada, Facultat de Física, Universitat de Barcelona 1 , 08028 Barcelona,
Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona 2 , 08028 Barcelona,
ALBA Synchrotron Light Source 3 , 08290 Cerdanyola del Vallès,
Departament de Física Aplicada, Facultat de Física, Universitat de Barcelona 4 , 08028 Barcelona,
Departamento de Física de Materiales, Facultad de Ciencias Físicas, Universidad Complutense de Madrid 5 , 28040 Madrid,
Facultad de Ciencias, Universidad de Zaragoza 6 , 50009 Zaragoza,
Paul-Drude-Institut für Festkörperelektronik, Leibniz-Institut im Forschungsverbund Berlin e.V. 7 , 10117 Berlin,
Instituto de Magnetismo Aplicado, UCM-ADIF-CSIC 8 , Las Rozas 28232,
Funding
Ministerio de Ciencia Innovación
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