Mechanism of Fast Axially Symmetric Reversal of Magnetic Vortex Core
DOI:
https://doi.org/10.15407/ujpe58.06.0596Keywords:
magnetic vortex, nanodot, nanodisk, vortex random-access memoriesAbstract
The magnetic vortex core in a nanodot can be switched by an alternating transversal magnetic field. We propose a simple collective coordinate model, which describes the comprehensive vortex core dynamics, including the resonant behavior, weakly nonlinear regimes, and reversal dynamics. A chaotic dynamics of the vortex polarity is predicted. All analytical results are confirmed by micromagnetic simulations.
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Kyiv, Ukraine
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