Magnetic Dynamics of a Multiferroic with an Antiferromagnetic Layer
Abstract
Shape effects in magnetic particles are widely studied, because of the ability of the shape and the size to control the parameters of a sample during its production. Experiments with nano-sized samples show that the shape can affect also the properties of antiferromagnetic (AFM) materials. However, the theoretical interpretation of these effects is under discussion. We propose a model to study the shape-induced effects in AFM particles at the AFM resonance frequency. The Lagrange function method is used to calculate the spectrum of resonance oscillations of the AFM vector in a synthetic multiferroic (piezoelectric + antiferromagnet). The influence of the specimen shape on the AFM resonance frequency in the presence of an external magnetic field is studied. Conditions for a resonance under the action of an external force or for a parametric resonance to arise in the magnetic subsystem are considered.
Keywords
Cite
@article{arxiv.1306.4300,
title = {Magnetic Dynamics of a Multiferroic with an Antiferromagnetic Layer},
author = {Svitlana V. Kondovych and Helen V. Gomonay and Vadim M. Loktev},
journal= {arXiv preprint arXiv:1306.4300},
year = {2013}
}
Comments
10 pages, 5 figures