One-dimensional magnonic crystals

Magnonic crystals attract special attention in view of their applicability for both fundamental research on linear and nonlinear wave dynamics in artificial media, and for signal processing in the microwave frequency range. We have concentrated our efforts on the experimental and theoretical investigation of one-dimensional magnonic crystals which can be realized as a spin-wave waveguide whose properties change periodically in space along the spin-wave propagation direction. In this talk I will discuss different magnetic materials and methods used for the magnonic crystal fabrication including geometrical structuring of the waveguide, application of periodic bias magnetic field, and modulation of the crystal structure via surface acoustic waves. The effects of highly-efficient multi-mode spin wave scattering, spin-wave frequency conversion effect and reverse Doppler shift were observed in these magnonic crystals.