Speaker
Description
In this work, we study the dynamical behavior of a uniaxial anisotropic magnetic particle under the action of an external time-varying magnetic field using the Landau-Lifshitz-Gilbert approach. Specifically, we investigate the system response as a function of its characteristic parameters with particular emphasis on dissipation and anisotropy. We explore the Lyapunov spectrum to characterize multiple transitions among periodic, quasi-periodic, and chaotic regimes. We found that the anisotropy produces asymmetry in the dynamical states, showing different behaviors for the hard and easy anisotropy axes. Furthermore, we observe that there are code bar type transitions among chaotic and quasi-periodic states as a function of the magnetic field when the dissipation is small, whereas when the dissipation increases, periodic states appear. For these regular states, the periodicity distribution as well as the period are computed using the isospikes technique and Fourier spectrum, respectively.
Details
David Laroze
| Is this abstract from experiment? | No |
|---|---|
| Name of experiment and experimental site | N/A |
| Is the speaker for that presentation defined? | Yes |
| Internet talk | No |
