Buess, M. and Haug, T. and Scheinfein, M. R. and Back, Christian H. (2005) Micromagnetic dissipation, dispersion, and mode conversion in thin permalloy platelets. PHYSICAL REVIEW LETTERS, 94 (12): 127205. ISSN 0031-9007,
Full text not available from this repository.Abstract
Micron-sized ferromagnetic Permalloy disks exhibiting an in-plane ferromagnetic vortex structure are excited by a fast rise time perpendicular magnetic field pulse and their modal structure is analyzed. We find azimuthal and axial modes. By a Fourier filtering technique we can separate and analyze the time dependence of individual modes. Analysis of the experimental data demonstrates that the azimuthal modes damp more quickly than the axial modes. We interpret these results as mode conversion from low-frequency azimuthal modes to the fundamental mode which is higher in frequency, i.e., mode-mode coupling in a system with a single Landau-Lifshitz-Gilbert phenomenological damping constant alpha.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MAGNETIZATION DYNAMICS; PRECESSIONAL MOTION; SPIN-WAVES; NICKEL; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Back > Group Christian Back |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 18 May 2021 08:50 |
| Last Modified: | 18 May 2021 08:50 |
| URI: | https://pred.uni-regensburg.de/id/eprint/36335 |
Actions (login required)
 |
View Item |
