Sr1.5Ba0.5Zn2Fe12O22 Hexaferrites Ferromagnetic Resonance and Nonlinear Excitation for Magneto-Electric Devices

TL;DR

This paper investigates the ferromagnetic resonance and nonlinear excitation in Sr1.5Ba0.5Zn2Fe12O22 hexaferrites, revealing internal anisotropy fields and potential magneto-electric coupling for device applications.

Contribution

It introduces a detailed analysis of ferromagnetic resonance and nonlinear excitation in Sr1.5Ba0.5Zn2Fe12O22, highlighting its anisotropy fields and magneto-electric coupling potential.

Findings

Identified -0.5 kOe exchange anisotropy field in the material.

Derived the Polder tensor and resonance condition using a free energy model.

Showed potential for magneto-electric coupling via nonlinear excitation.

Abstract

A magneto electric (ME) effect was reported [1] for the insulator material of helimagnetic hexaferrite of Sr1.5Ba0.5Zn2Fe12O22. In this study we are interested in investigating this materials ferromagnetic resonance to define its internal anisotropy fields. By using a vibrating sample magnetometer (VSM) and ferromagnetic resonance (FMR) analysis we realized that this helical hexaferrite has about -0.5 kOe exchange anisotropy field of HE. Also, by using an alternative free energy model we derived this materials Polder tensor and its ferromagnetic resonance condition. Meanwhile, we were able to show a potential magneto electric coupling by nonlinear excitation of planar helical hexaferrite, in which a magnetic nonlinear excitation is integrated into dielectric permittivity. Index Terms, Ferrites, ferromagnetic resonances, and magnetic nonlinear excitations.