skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Nonlinear oscillations of magnetization for ferromagnetic particles in the vortex state and their ordered arrays

Abstract

The dynamics of magnetization oscillations with a considerable amplitude and a radial symmetry in small ferromagnetic particles in the form of a thin disk with a magnetic vortex has been investigated. The collective variables that describe radially symmetric oscillations of the magnetization dynamics for particles in the vortex state are introduced, and the dependence of the particle energy is studied as a function of these variables. The analytical expressions describing the frequency of magnetization oscillations with a radial symmetry, including nonlinear oscillations, are derived using the collective variables. It is shown that the presence of a magnetic field oriented perpendicular to the particle plane reduces the oscillation frequency and can lead to hybridization of this mode with other modes of spin oscillations, including the mode of translational oscillations of the vortex core. The soliton solutions describing the propagation of collective oscillations along the chain of magnetic particles are found.

Authors:
Publication Date:
OSTI Identifier:
21443704
Resource Type:
Journal Article
Journal Name:
Journal of Experimental and Theoretical Physics
Additional Journal Information:
Journal Volume: 109; Journal Issue: 1; Other Information: DOI: 10.1134/S1063776109070103; Copyright (c) 2009 Pleiades Publishing, Ltd.; Journal ID: ISSN 1063-7761
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; AMPLITUDES; FERROMAGNETIC MATERIALS; FERROMAGNETISM; MAGNETIC FIELDS; MAGNETIZATION; NONLINEAR PROBLEMS; OSCILLATIONS; PARTICLES; SOLITONS; SPIN; VORTICES; ANGULAR MOMENTUM; MAGNETIC MATERIALS; MAGNETISM; MATERIALS; PARTICLE PROPERTIES; QUASI PARTICLES

Citation Formats

Galkin, A Yu, and Ivanov, B. A., E-mail: bivanov@i.com.u. Nonlinear oscillations of magnetization for ferromagnetic particles in the vortex state and their ordered arrays. United States: N. p., 2009. Web. doi:10.1134/S1063776109070103.
Galkin, A Yu, & Ivanov, B. A., E-mail: bivanov@i.com.u. Nonlinear oscillations of magnetization for ferromagnetic particles in the vortex state and their ordered arrays. United States. https://doi.org/10.1134/S1063776109070103
Galkin, A Yu, and Ivanov, B. A., E-mail: bivanov@i.com.u. Wed . "Nonlinear oscillations of magnetization for ferromagnetic particles in the vortex state and their ordered arrays". United States. https://doi.org/10.1134/S1063776109070103.
@article{osti_21443704,
title = {Nonlinear oscillations of magnetization for ferromagnetic particles in the vortex state and their ordered arrays},
author = {Galkin, A Yu and Ivanov, B. A., E-mail: bivanov@i.com.u},
abstractNote = {The dynamics of magnetization oscillations with a considerable amplitude and a radial symmetry in small ferromagnetic particles in the form of a thin disk with a magnetic vortex has been investigated. The collective variables that describe radially symmetric oscillations of the magnetization dynamics for particles in the vortex state are introduced, and the dependence of the particle energy is studied as a function of these variables. The analytical expressions describing the frequency of magnetization oscillations with a radial symmetry, including nonlinear oscillations, are derived using the collective variables. It is shown that the presence of a magnetic field oriented perpendicular to the particle plane reduces the oscillation frequency and can lead to hybridization of this mode with other modes of spin oscillations, including the mode of translational oscillations of the vortex core. The soliton solutions describing the propagation of collective oscillations along the chain of magnetic particles are found.},
doi = {10.1134/S1063776109070103},
url = {https://www.osti.gov/biblio/21443704}, journal = {Journal of Experimental and Theoretical Physics},
issn = {1063-7761},
number = 1,
volume = 109,
place = {United States},
year = {2009},
month = {7}
}