Numéro
J. Phys. IV France
Volume 07, Numéro C1, Mars 1997
7th INTERNATIONAL CONFERENCE ON FERRITES
Page(s) C1-383 - C1-386
DOI https://doi.org/10.1051/jp4:19971156
7th INTERNATIONAL CONFERENCE ON FERRITES

J. Phys. IV France 07 (1997) C1-383-C1-386

DOI: 10.1051/jp4:19971156

Auto-Oscillations and Chaos for Microwave Signals in Ferrite Single Crystals

H. Benner

Institut für Festkörperphysik and SFB 185, TH Darmstadt, Hochschulstr. 6, 64289 Darmstadt, Germany


Abstract
The recent progress of nonlinear dynamics has stimulated a renaissance of high-power ferromagnetic resonance experiments on ferrites, both under the aspects of basic research and application. We report on resonance experiments in yttrium iron garnet spheres probing chaotic scenarios above the first-order Suhl threshold. Different techniques have been proposed to change the observed irregular auto-oscillations of magnetization into regular motion. The delayed feedback control method of Pyragas is studied both in theory and experimental application.



© EDP Sciences 1997