ZIGZAG WALL DYNAMICS IN UNIAXIAL INPLANE MAGNETIC THIN-FILMS

An unusual right/left zigzag wall propagation in the bias (transverse) and ac fields applied simultaneously is observed. A dynamic model based on the variable coercivity, effective transverse field, transformation of the walls from asymmetric Bloch into asymmetric Neel type (and vice versa) is proposed. Degeneration of two segments of one 'zig' (or 'zag') which 'sense' differently the transverse field is one of the crucial point of the zigzag dynamics.