Magnetoelectric oscillations in quasi-2D ferrite disk particles

TL;DR

This paper demonstrates that quasi-2D ferrite disks exhibit unique magnetoelectric oscillations with topological phases, characterized by coupled electric and magnetic eigen moments, revealing novel symmetry and ME properties.

Contribution

It introduces the concept of magnetoelectric properties in quasi-2D ferrite disks with topological phases and coupled eigen moments, a novel insight into their symmetry features.

Findings

Identification of unique symmetry features in MDM oscillations.

Demonstration of topological phases leading to ME properties.

Characterization of the ferrite disk as coupled electric and magnetic eigen moments.

Abstract

In this paper we show that magnetic-dipolar-mode (MDM) oscillations of a quasi-2D ferrite disk are characterized by unique symmetry features with topological phases resulting in appearance of the magnetoelectric (ME) properties. The entire ferrite disk can be characterized as a pair of two, electric and magnetic, coupled eigen moments. However, there is no a "glued pair" of two dipoles. An external electromagnetic field in the near-field region "views" such a ME particle, as a system with a normally oriented eigen electric moment and an in-plane rotating eigen magnetic dipole moment.