Quasi-periodic regimes of spin-wave self-generation in fer-rite-film active ring oscillator

This work reports for the first time a detailed experimental investigation of a transition from the quasi-periodic regime to chaotic regime of the spin-wave self-generation in ferrite-film active-ring oscillator. An unusual peculiarity of this transition was that it was caused not by a chain of modulation instabilities of the initially generated harmonics, but due to entering into oscillation the new amplified harmonics of the oscillator.