Magnetization ground state and reversal modes of magnetic nanotori
arXiv:1603.07741 · doi:10.1063/1.4958740
Abstract
In this work, and by means of micromagnetic simulations, we study the magnetic properties of toroidal nanomagnets. The magnetization ground state for different values of the aspect ratio between the toroidal and polar radii of the nanotorus has been obtained. The hysteresis curves are also obtained, evidencing the existence of two reversal modes depending on the geometry: a vortex mode and a coherent rotation. A comparison between toroidal and cylindrical nanoparticles has been performed evidencing that nanotori can accommodate a vortex as the ground state for smaller volume than cylindrical nanorings. This is important because if vortices are used as bits of information, nanotori allow a higher density data storage.
19 pages, 14 Figures
References in corpus (13)
- Curvature effects in statics and dynamics of low dimensional magnets
- Magnetochiral symmetry breaking in a Möbius ring
- Curvature induced domain wall pinning
- Torsion induced effects in magnetic nanowires
- Stability of magnetic configurations in nanorings
- On topological spin excitations on a rigid torus
- Ground-state configurations in ferromagnetic nanotori
- Magnetic characterization and switching of Co nano-rings in current-perpendicular-to-plane configuration
- Magnetization ground state and reversal modes of magnetic nanotori
- Topological magnetic solitons on a paraboloidal shell
- Curvature effects in vortex chirality switching
- Curvature-induced changes in the magnetic energy of vortices and skyrmions in paraboloidal nanoparticles
- Spherical magnetic nanoparticles: magnetic structure and interparticle interaction
Cited by in corpus (7)
- Vortex-antivortex pairs induced by curvature in toroidal nanomagnets
- Magnetization ground state and reversal modes of magnetic nanotori
- Analysis on the stability of in-surface magnetic configurations in toroidal nanoshells
- Electronic properties of a nanotorus
- Fermions on a torus knot
- New magnetic states in nanorings created by anisotropy gradients
- Impact of curvature-induced Dzyaloshinskii-Moriya interaction on magnetic vortex texture in spherical caps