Effect of Au nanoparticels on longitudinal magneto-optical Kerr effect of magneto-plasmonic multilayer

Abstract: We report an experimental study on optical and magneto-optical properties of Ce-substituted yttrium iron garnet thin films incorporating gold nanoparticles and covered with dielectric Bragg reflectors (Au nanoparticles/ Ce: YIG/ Bragg reflector). Au nanoparticles were formed by heating Au thin film on cubic quartz substrate in vacuum chamber and a Ce: YIG layer was deposited on them by the aid of Pulsed laser deposition method and then a dielectric Bragg reflector mirror deposited on the sample by the aid of electron beam deposition method. A large enhancement of the Longitudinal Kerr effect at wavelength of surface Plasmon resonance of Au nanoparticles was obtained in sample with Au nanoparticles on quartz substrate.

Au nanoparticles, Surface Plasmon resonance, longitudinal magneto-optical effect.