Propagation of Spin Waves in Microstructures Based on Yttrium–Iron Garnet Films Decorated by a Ferromagnetic Metal

Propagation of spin waves in an yttrium–iron garnet film decorated by nickel-film microstructures have been studied experimentally and theoretically. A choice of the geometry of the nickel microstructures is shown to enable controlling the spin-wave damping and the formation of wave beams of spin waves.