Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2006-07-31
Phys. Rev. B 74, 104406 (2006)
Physics
Condensed Matter
Statistical Mechanics
18 pages, 5 figures
Scientific paper
10.1103/PhysRevB.74.104406
We study dynamical and thermal effects that are induced in nanoparticle systems by a rotating magnetic field. Using the deterministic Landau-Lifshitz equation and appropriate rotating coordinate systems, we derive the equations that characterize the steady-state precession of the nanoparticle magnetic moments and study a stability criterion for this type of motion. On this basis, we describe (i) the influence of the rotating field on the stability of the small-angle precession, (ii) the dynamical magnetization of nanoparticle systems, and (iii) the switching of the magnetic moments under the action of the rotating field. Using the backward Fokker-Planck equation, which corresponds to the stochastic Landau-Lifshitz equation, we develop a method for calculating the mean residence times that the driven magnetic moments dwell in the up and down states. Within this framework, the features of the induced magnetization and magnetic relaxation are elucidated.
Denisov S. I.
Hänggi Peter
Lyutyy T. V.
Trohidou K. N.
No associations
LandOfFree
Dynamical and thermal effects in nanoparticle systems driven by a rotating magnetic field does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dynamical and thermal effects in nanoparticle systems driven by a rotating magnetic field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamical and thermal effects in nanoparticle systems driven by a rotating magnetic field will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-33811