Ferromagnetic resonance excitation of two-dimensional wall structures in magnetic stripe domains - art. no. 174437

Using ferromagnetic resonance, an experimental approach is presented to evi dence and analyze the small amplitude excitations of inhomogeneous magnetiz ation distributions in thin magnetic films. This approach is applied to the complex two-dimensional (2D) domain walls of Co(0001) stripe domains, whic h contain a reduced Bloch part in the film center and extended flux closure caps at the film surface. Upon varying the pumping field orientation, the different regions of the domain walls, the flux closure caps and the domain s can be selectively excited, yielding a rich excitation spectrum with up t o seven modes. In combination with static investigations and 2D micromagnet ic simulations these modes can be assigned to the domain-wall resonance mod es, the oscillations of the flux closure caps, as well as to the excitation of the domain magnetization.