Sub-GHz Resonant Magnetoelastic Coupling in Epitaxial Fe Thin Films

Abstract : The resonant interaction of surface acoustic waves and spin waves is a potential new tool to handle information. However, the natural precession frequencies of most ferromagnetic materials lie in the 10 GHz range, i.e. far above present common technology for surface acoustic waves. This feature restricts the range of materials of interest. To expand this range, we present here measurements of the acoustic attenuation and velocity, at room temperature, in epitaxial Fe on GaAs(001). Resonant coupling is observed in the sub-GHz regime by proper selection of the orientation and intensity of the applied magnetic field. With a very simple magnetization dynamics model that takes into account the softening of the magnetic precession modes, we are able to describe the observed salient features.
Complete list of metadatas

Cited literature [39 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-02022637
Contributor : Pauline Rovillain <>
Submitted on : Monday, February 18, 2019 - 10:15:45 AM
Last modification on : Friday, March 22, 2019 - 1:42:55 AM
Long-term archiving on : Sunday, May 19, 2019 - 4:37:40 PM

File

Article_magnetoelastic_couplin...
Files produced by the author(s)

Identifiers

  • HAL Id : hal-02022637, version 1

Citation

J.-Y Duquesne, Pauline Rovillain, C. Hepburn, M. Eddrief, P Atkinson, et al.. Sub-GHz Resonant Magnetoelastic Coupling in Epitaxial Fe Thin Films. 2019. ⟨hal-02022637⟩

Share

Metrics

Record views

199

Files downloads

168