Ferromagnetic resonance properties of LPE YIG films

This is the first report of the ferromagnetic resonance properties of thin single-crystal YIG films grown by liquid phase epitaxy techniques (LPE). The resonance linewidths of photoetched disks are close to that of bulk YIG for both parallel and perpendicular resonance without any annealing of the films. A new type of surface spin wave, localized at the air-film interface, is shown to exist in perpendicular resonance. The boundary conditions necessary for this surface spin wave to exist are produced either by SiO2sputtering or ion implantation.