Intermittency in spin-wave instabilities

The dynamics of the magnetization of yttrium iron garnet spheres was studie d by ferromagnetic resonance both within the subsidiary absorption regime a nd the coincidence regime of the first-order Suhl instability. The absorpti on signal shows auto-oscillations with a rich variety of nonlinear behavior . Along with other routes to chaos we observed intermittency and identified each of the Pomeau-Manneville types I-III. Within the chaotic regime crisi s-induced intermittency, on-off intermittency, and noise-induced intermitte nt behavior were observed. [S1063-651X(99)00602-9].