Magnetoacoustic waves in a highly magnetostrictive Fe72Ga28 thin film
Loading...
Official URL
Full text at PDC
Publication date
2025
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
AIP Publishing
Citation
M. Rovirola, M.W. Khaliq, B. Casals, A. Begué, N. Biskup, N. Coton, J.M. Hernàndez, M.A. Niño, M. Foerster, A. Hernández-Mínguez, R. Ranchal, M.V. Costache, A. García-Santiago, and F. Macià, “Magnetoacoustic waves in a highly magnetostrictive Fe72Ga28 thin film,” APL Materials 13(2), 021112 (2025).
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.
Description
PRE2021-097235
Margarita Salas fellowship