Abstract
A description is given of pulsed high-power ferromagnetic resonance experiments in a YIG sphere at room temperature. Beyond the Suhl instability threshold, evidences were found for the alternating periodic-chaotic sequence. The chaotic spin-wave self-oscillations were characterized through return maps obtained from the local maxima in the observed transient-free time series. As a result, a simple one-dimensional mapping scheme that exhibits the basic features of the observed transition is presented.
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