Mesoscopic quantized properties of magnetic-dipolar-mode oscillations in disk ferromagnetic particles

TL;DR

This paper investigates the mesoscopic quantized energy levels of magnetic-dipolar-mode oscillations in ferrite disks, highlighting the effects of internal magnetic field nonhomogeneity on these discrete spectra.

Contribution

It provides new insights into the energy spectra of MS wave ferrite disks considering nonhomogeneous internal magnetic fields, expanding understanding of geometrical effects in magnetic oscillations.

Findings

Discrete energy levels observed in ferrite disk oscillations

Internal magnetic field nonhomogeneity influences energy spectra

Enhanced understanding of geometrical effects in magnetic modes

Abstract

Magnetic dipolar mode or magnetostatic (MS) oscillations in ferrite samples have the wavelength much smaller than the electromagnetic wavelength at the same frequency and, at the same time, much larger than the exchange interaction spin wavelength. This intermediate position between the electromagnetic and spin wave (exchange interaction) processes reveals very special behaviors of the geometrical effects. It was shown recently that magnetic dipolar mode oscillations in a normally magnetized ferromagnetic disk are characterized by discrete energy levels resulting from the structural confinement. In this article we give results of the energy spectra in MS wave ferrite disks taking into account nonhomogeneity of the internal DC magnetic field.