Influence of implantation on the optical and magneto-optical properties of garnet surface

• This paper analyses magneto-optical properties of the ion implanted garnet surface.
• Ion implantation influences the magneto-optical properties of the garnet films.
• Ion implantation practically does not change optical characteristics of the garnet films.
• Implantation leads to a significant inhibition of the growth of anisotropy.
• Implantation process essentially transforms electronic energy structure of implanted layer.

We have investigated the optical and magneto-optical properties of the ion-implanted (YBiCa)3(FeGe)5O12 garnet films. It has shown that ion implantation influences significantly the magneto-optical properties of the garnet films and practically does not change its optical characteristics. The research of magnetization processes of implanted films showed that implantation leads to a significant inhibition of the growth of anisotropy. The latter is expressed in the decrease of the amount of saturation fields in-plane films. In the proceeding, we have researched the magneto-optical properties of ion-implanted (YBiCa)3(FeGe)5O12 garnet films after it was annealed at 270 °C. We have also determined the spectral dependences of the component of the tensor of dielectric permittivity for the surface of the ferrite–garnet films before and after implantation process. These calculations let us evaluate the influence of implantation on an electronic energy structure of the surface layer for the sample.