Ferromagnetic resonance experiments of magnetic nanostructures over a large frequency range from 1 to 225 GHz are presented. We find unambiguous evidence for a nonlinear frequency dependence of the linewidth. The viscous Gilbert damping and two-magnon scattering are clearly separated. Both angular and frequency dependent measurements give a transverse scattering rate within the magnetic subsystem of the order of 109 s-1, whereas the longitudinal Gilbert relaxation into the thermal bath is one to two orders of magnitude smaller.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - May 12 2006|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics