Magnetoacoustic waves in a highly magnetostrictive Fe72Ga28 thin film
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.
Authors
- Marius V. Costache
- Adrián Begué (ORCID: https://orcid.org/0000-0002-2642-5635)
- Antoni García‐Santiago (ORCID: https://orcid.org/0000-0001-5757-5858)
- J. M. Hernández (ORCID: https://orcid.org/0000-0002-5165-0199)
- R. Ranchal (ORCID: https://orcid.org/0000-0002-0722-7262)
- N. Cotón (ORCID: https://orcid.org/0000-0002-5758-7565)
- Marc Rovirola (ORCID: https://orcid.org/0000-0001-7172-1452)
- Michael H Foerster (ORCID: https://orcid.org/0000-0002-4147-6668)
- Miguel Ángel Niño (ORCID: https://orcid.org/0000-0003-3692-147X)
- N. Biškup (ORCID: https://orcid.org/0000-0003-0309-0737)
- Ferran Macià (ORCID: https://orcid.org/0000-0001-5972-4810)
- Muhammad Waqas Khaliq (ORCID: https://orcid.org/0000-0002-9696-3498)
- Blai Casals (ORCID: https://orcid.org/0000-0002-2941-1861)
- A. Hernández‐Mínguez (ORCID: https://orcid.org/0000-0003-4361-9914)
Institutions
- Universidad Complutense de Madrid (ES)
- Universidad de Zaragoza (ES)
- ALBA Synchrotron (Spain) (ES)
- Paul Drude Institute for Solid State Electronics (DE)
- Forschungsverbund Berlin (DE)
- Institute of Magnetism (UA)
- Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona
- Universitat de Barcelona (ES)
Publication Details
- Journal
- APL Materials
- Published
- 2025-02-01
- DOI
- https://doi.org/10.1063/5.0237699
- Citations
- 1
- Primary Topic
- Magnetic Properties and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.43
Funders
- European Commission
- Generalitat de Catalunya
- Ministerio de Ciencia e Innovación
- Agencia Estatal de Investigación