Dynamics of ferromagnetic nanomagnets with vortex or single-domain configuration
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چکیده
We study the dynamics of flat circular permalloy nanomagnets for 1.) magnetic vortex and 2.) single-domain configurations using micromagnetic simulation. Dynamical studies for isolated vortex structures show that both the vorticity and the polarity of the out-of-plane component can be switched fast (50-100 ps). Micromagnetic simulations of the switching process in thin cylindrical Permalloy(Py) nanoparticles with an initial stable singledomain state show nearly homogeneous single-domain behavior followed by excitation of spin waves.
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تاریخ انتشار 2003