A model for structural defects in nanomagnets
arXiv:0908.2986 · doi:10.1063/1.3247542
Abstract
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.
8 pages, resubmitted to Journal of Applied Physics
References in corpus (7)
- Dynamics of Pinned Magnetic Vortices
- Vortex polarity switching by a spin--polarized current
- Predicted defect induced vortex core switching in thin magnetic nanodisks
- How hole defects modify vortex dynamics in ferromagnetic nanodisks
- Chiral symmetry breaking of magnetic vortices by sample roughness
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Cited by in corpus (9)
- Ground-state configurations in ferromagnetic nanotori
- A Deformable Model for Magnetic Vortex Pinning
- On geometry-dependent vortex stability and topological spin excitations on curved surfaces with cylindrical symmetry
- Topological magnetic solitons on a paraboloidal shell
- Magneto-Optical Imaging of Vortex Domain Deformation in Pinning Sites
- Coupling between magnetic field and curvature in Heisenberg spins on surfaces with rotational symmetry
- Effects of disorder on magnetic vortex gyration
- Topological spin excitations induced by an external magnetic field coupled to a surface with rotational symmetry
- Spin dynamics of anisotropic azimuthal modes in heterogeneous magnetic nanodisks