A model for structural defects in nanomagnets

Details A model for structural defects in nanomagnets A model for structural defects in nanomagnets

2009-08-20

arxiv.org/abs/0908.2986v1

J. Appl. Phys. 106, 084320 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, resubmitted to Journal of Applied Physics

Scientific paper

10.1063/1.3247542

A model for describing structural pointlike defects in nanoscaled ferromagnetic materials is presented. Its details are explicitly developed whenever interacting with a vortex-like state comprised in a thin nanodisk. Among others, our model yields results for the vortex equilibrium position under the influence of several defects along with an external magnetic field in good qualitative agreement with experiments. We also discuss how such defects may affect the vortex motion, like its gyrotropic oscillation and dynamical polarization reversal.

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