Resonant magneto-acoustic switching: influence of Rayleigh wave frequency and wavevector
Résumé
We show on in-plane magnetized thin films that magnetization can be switched efficiently by 180 degrees using large amplitude Rayleigh waves travelling along the hard or easy magnetic axis. Large characteristic filament-like domains are formed in the latter case. Micromagnetic simulations clearly confirm that this multi-domain configuration is compatible with a resonant precessional mechanism. The reversed domains are in both geometries several hundreds of , much larger than has been shown using spin transfer torque- or field-driven precessional switching. We show that surface acoustic waves can travel at least 1 mm before addressing a given area, and can interfere to create magnetic stripes that can be positioned with a sub-micronic precision.
Domaines
Physique [physics]
Fichier principal
Kuszewski_2018_J._Phys.-_Condens._Matter_30_244003.pdf (2.64 Mo)
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| Origine | Publication financée par une institution |
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