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arXiv · 1802.10318

Resonant magneto-acoustic switching: influence of Rayleigh wave frequency and wavevector

Piotr Kuszewski·Ibrahima S. Camara·Nicolas Biarrotte·Loic Becerra·Jürgen von Bardeleben·A. Lemaître·Catherine Gourdon·Jean-Yves Duquesne·Laura Thevenard
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Abstract

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 \mu m^2, 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 1mm before addressing a given area, and can interfere to create magnetic stripes that can be positionned with a sub-micronic precision.

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Piotr Kuszewski, Ibrahima S. Camara, Nicolas Biarrotte, Loic Becerra, Jürgen von Bardeleben, A. Lemaître, Catherine Gourdon, Jean-Yves Duquesne, Laura Thevenard. 2018-02-28. Resonant magneto-acoustic switching: influence of Rayleigh wave frequency and wavevector. https://doi.org/10.1088/1361-648x/aac152

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