Surface-induced reduction of the switching field in nanomagnets

R. Bastardis; H. Kachkachi

doi:10.1016/j.jmmm.2021.168966

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arXiv · 2107.11407

Surface-induced reduction of the switching field in nanomagnets

R. Bastardis·H. Kachkachi

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Abstract

Magnetization reversal in a many-spin nanomagnet subjected to an rf magnetic field, on top of a DC magnetic field, is studied by numerically solving the system of coupled (damped) Landau-Lifshitz equations. It is demonstrated that spin-misalignment induced by surface anisotropy favors switching with a DC magnetic field weaker than the Stoner-Wohlfarth switching field, for optimal intensities and frequencies of the rf field.

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R. Bastardis, H. Kachkachi. 2021-07-23. Surface-induced reduction of the switching field in nanomagnets. https://doi.org/10.1016/j.jmmm.2021.168966

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