arXiv:1811.01069 Abstract | arXiv Analytics

arXiv:1811.01069 [cond-mat.mes-hall]Abstract References Reviews Resources

New magnetic states in nanorings created by anisotropy gradients

M. Castro, A. P. Espejo, N. M. Vargas, D. Altbir, S. Allende, V. L. Carvalho-Santos

Published 2018-11-02Version 1

Magnetic nanorings have been widely studied due to their potential applications in spintronic and magnonic devices. In this work, by means of analytical calculations and micromagnetic simulations we have analyzed the magnetic energy of nanorings with variable anisotropy along their radius. Four magnetic states, including two new magnetic configurations, here called meron and knot-like states, are considered, looking to the relative lower energy states as a function of anisotropy. Phase diagrams with this states are presented.

Comments: 6 pages, 4 figures

Categories: cond-mat.mes-hall

Keywords: magnetic states, anisotropy gradients, relative lower energy states, potential applications, micromagnetic simulations

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