Chaotic domain patterns in periodic inhomogeneous magnetic films

A study of domain structures in thin inhomogeneous ferromagnetic films is presented. It is shown that smooth and small inhomogeneities in the exchange and anisotropy parameters yield very complex domain structures. We show that the domain walls are fixed near cer tain inhomogeneities but do not repeat their space distribution. We found that there are metastable chaotic domain patterns in periodic inhomogeneous films. These results are relevant for magnetoresistive devices.