Efficient High Frequency Spin Wave Excitation with Undulating Ferromagnetic Film

Two high-frequency spin-wave excitation film structures are proposed in this paper. Time-domain and frequency-domain analyses of simulation results have been applied to obtain angle-dependent and wavelength-dependent PSSW peak intensity relation in two models. Careful tuning of the unique film structures exhibits that the intensity of the desirable high-frequency spin wave can be enhanced by more than one order of magnitude.