Vertical displacement of the magnetooptical hysteresis loop in the magnetoplasmonic nanocomposite

The results of synthesis and investigation of magnetooptical (MO) properties of thin-film magnetoplasmonic nanocomposite, which is a layer of bismuth-substituted iron garnet Bi:YIG with plasmon nanoparticles Au, have been presented. The effect of vertical displacement of the MO hysteresis loop relative to the origin has been found in the study of MO-properties in the process of reversal magnetization of this magnetoplasmonic nanocomposite. It has been shown that the observed effect is most pronounced in the vicinity of the localized plasmon resonance in the system of metal nanoparticles that are part of the magnetoplasmonic composite.