CHAOTIC MOTION OF DIFFUSE DOMAIN-WALLS IN MAGNETIC GARNETS

The motion of diffuse domain walls in thin garnet films (i.e., walls w ith extreme width), which was observed experimentally when an in-plane magnetic field was applied, is analyzed numerically using a spatiotem poral diagram technique and analysis of the time evolution of pattern entropy. It is found that the motion of such walls is chaotic and expe rimental observations of diffuse domain walls may be treated as a dire ct observation of chaotic motion in a magnetic system.