Analysis of the broadband chaotic spin-wave excitations in an active ring oscillator based on a metalized ferrite film

18th International Conference PhysicA.SPb

Kondrashov, A.V.^1 ; Ustinov, A.B.^1 ; Kalinikos, B.A.^1 ; Demokritov, S.O.^2

Department of Physical Electronics and Technology, St.Petersburg Electrotechnical University, St.Petersburg

197376, Russia^1

Institute for Applied Physics, Center for Nonlinear Science, University of Münster, Münster

48149, Germany^2

关键词: Chaotic attractors;    Nonlinear spin waves;    Oscillation power;    Parametric process;    Quasi-periodic;    Ring oscillator;    Separated wells;    Spinwave excitation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/769/1/012089/pdf
DOI  :  10.1088/1742-6596/769/1/012089

来源: IOP

【 摘 要 】

This paper reports the first experimental study of broadband chaotic nonlinear spin- wave excitations which is formed through development of four-wave parametric processes in active ring oscillator based on metallized ferrite film. We find that an increase in the oscillation power leads to Hopf bifurcations sequence. Monochromatic, periodic quasi-periodic and chaotic excitations are observed. Spectra of the chaotic excitations consist of series of chaotic bands separated well in frequency. Parameters of the chaotic attractors are discussed.