publication . Article . 2021

Controlling vortex chirality and polarity by geometry in magnetic nanodots

Sebastià Agramunt-Puig; Nuria Del-Valle; Carles Navau; Alvaro Sanchez;
Open Access English
  • Published: 15 Jan 2021
  • Country: Spain
Abstract
The independent control of both vortex chirality and polarity is a significant challenge in magnetic devices based on nano-sized magnetic vortex structures. By micromagnetic simulations here, we show that in soft ferromagnetic nanodots with an adequate modulated thickness, the desired combination of chirality and polarity can be achieved just by changing the direction of the in-plane applied magnetic field. Despite the complex behavior, the vortex chirality and polarity control can be summarized in two simple rules that can thus become a useful tool for designing magnetic devices.
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Subjects
arXiv: Computer Science::Databases
free text keywords: Chiral symmetries, Ferromagnetism, Magnetic fields, Nucleation, Saturation moments, Physics and Astronomy (miscellaneous), Polarity (international relations), Physics, Nanodot, Magnetic vortex, Condensed matter physics, Magnetic structure, Magnetic field, Micromagnetics, Vortex
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