TY - JOUR
T1 - Analytical Description of Quasi-Random Magnetization Relaxation to Equilibrium
JF - Magnetics, IEEE Transactions on
Y1 - 2009
A1 - Serpico,C.
A1 - d'Aquino,M.
A1 - Bertotti,G.
A1 - Mayergoyz, Issak D
KW - approach;quasirandom
KW - crossing;uniformly
KW - dynamical
KW - dynamics;averaging
KW - Hamiltonian
KW - magnetization
KW - magnetized
KW - particle;magnetic
KW - particles;magnetic
KW - perturbed
KW - relaxation;magnetisation;probability;
KW - relaxation;separatrix
KW - system;Landau-Lifshitz
KW - technique;damping;probabilistic
AB - The Landau-Lifshitz (LL) dynamics of a uniformly magnetized particle is considered. The LL equation is written in the form of a Hamiltonian perturbed dynamical system. By using suitable averaging technique, the equation for the slow dynamics of the energy is derived. The averaging technique breaks up in the case of separatrix crossing. It is shown that, in the limit of small damping, the separatrix crossing can be described by using a probabilistic approach.
VL - 45
SN - 0018-9464
CP - 11
M3 - 10.1109/TMAG.2009.2031067
ER -