Topological properties and polarization states of magnetostatic modes in a hollow ferromagnetic sphere

Using the solution for magnetostatic modes in a hollow sphere, it is possible to determine the dynamic magnetization configurations through the use of Topology concepts. The results were obtained in the case where the solutions have azimuthal symmetry. As a result, two configurations were obtained....

Full description

Saved in:
Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2025-02, Vol.614, p.172687, Article 172687
Main Authors: Saldanha-Bautista, D.E., Padrón-Hernández, Eduardo
Format: Article
Language:English
Subjects:
Degree of a map
Magnetization states
Magnetostatic modes
Vector field
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Using the solution for magnetostatic modes in a hollow sphere, it is possible to determine the dynamic magnetization configurations through the use of Topology concepts. The results were obtained in the case where the solutions have azimuthal symmetry. As a result, two configurations were obtained. One is that magnetization has two singularities and manifests itself at the poles of the hollow sphere. The other situation reflects the case in which there are three singularities, with flux leakage in the sphere’s equator region and those mentioned in the previous case with flux concentration at the sphere’s poles. These results were possible by exploring topology concepts combined to the solutions of magnetostatic modes in hollow sphere by means of the solution of the Walker’s equation. [Display omitted] •M states for magnetostatic modes were found.•The Map Degree of a Vector Field was used.•The magnetization was found by Topology.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2024.172687