Chaos of Magnon Systems in FMR Experiments and the Reconstruction of Atractors

Chaotic time series in FMR Experiments were investigated from the viewpoint of reconstructing an attractor. As the form of reconstructed attractors was a function of time delay, τ, the way to find out the optimal value of τ was investigated. To see the detail of the attractor, we construct the 3D steregraph. Folding and stretching of the orbit in 3D space can be distinguished in 3D stereograph.We compared the strange attractor of the mathematical model of magnon systems to the one of experimental date. As a result,we found some similar structure beween them. We also analyzed the chaotic time series from attractor reconstruction, power spectrum, the largest Lyapunov exponents and Poincare sections