Computation of Resonant Modes and Frequencies for Saturated Ferromagnetic Nanoparticles

Computation of Resonant Modes and Frequencies for Saturated Ferromagnetic Nanoparticles

The free oscillations of a micromagnetic system around a saturated equilibrium are considered. Magnetization dynamics is described by the Landau-Lifshitz-Gilbert (LLG) equation. The LLG equation is linearized around the equilibrium and put in the form of a generalized eigenvalue problem for suitable...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:IEEE transactions on magnetics 2008-11, Vol.44 (11), p.3141-3144
Hauptverfasser: d'Aquino, M., Serpico, C., Miano, G., Bertotti, G.
Format: Artikel
Sprache:eng
Schlagworte:
Cross-disciplinary physics: materials science
rheology
Discretization
Dynamical systems
Dynamics
Eigenvalues
Eigenvalues and eigenfunctions
Equations
Exact sciences and technology
Ferromagnetic resonance
generalized eigenvalue problem
Magnetic analysis
Magnetic films
Magnetic resonance
Magnetism
Magnetization
Materials science
Mathematical analysis
Micromagnetics
Nanoparticles
normal modes
Oscillations
Other topics in materials science
Performance analysis
Physics
resonant frequencies
Resonant frequency
Spectra
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The free oscillations of a micromagnetic system around a saturated equilibrium are considered. Magnetization dynamics is described by the Landau-Lifshitz-Gilbert (LLG) equation. The LLG equation is linearized around the equilibrium and put in the form of a generalized eigenvalue problem for suitable self-adjoint operators connected to the micromagnetic effective field. The spectral properties of this problem are studied. The spatial discretization of the problem is analyzed and numerical computation of the resonant oscillations for a magnetic thin-film are performed.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2008.2001602