DocumentCode
1498967
Title
On Stability of Magnetization Dynamics in Nanoparticles
Author
Mayergoyz, Isaak D. ; Serpico, Claudio ; Bertotti, Giorgio
Author_Institution
Electr. & Comput. Eng., Univ. of Maryland, College Park, MD, USA
Volume
46
Issue
6
fYear
2010
fDate
6/1/2010 12:00:00 AM
Firstpage
1718
Lastpage
1721
Abstract
It is rigorously demonstrated that spatially uniform magnetization oscillations in sufficiently small ellipsoidal nanoparticles can be unconditionally stable with respect to spatially nonuniform perturbations. The proof reveals the dominant stabilizing effect of exchange field which is mathematically manifested through the Poincare inequality.
Keywords
exchange interactions (electron); magnetic particles; magnetisation; nanoparticles; spin waves; Poincare inequality; exchange field; magnetization dynamics stability; small ellipsoidal nanoparticles; spatially nonuniform perturbations; spatially uniform magnetization oscillations; spin-wave perturbations; Boundary conditions; Couplings; Educational institutions; Electromagnetics; Equations; Magnetic field measurement; Magnetization; Nanoparticles; Polarization; Stability; Landau-Lifshitz equation; magnetization dynamics; spin-wave instability;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2009.2039119
Filename
5467529
Link To Document