Optical and Magneto-Optical Properties of Multilayer Magnetic Structures Based on Permalloy

Using the example of two-layer tantalum-permalloy films, we studied the possible effects of enhancing the magneto-optical response and changing the magneto-optical spectrum in multilayer magnetic structures. The sputtering of a thin paramagnetic or diamagnetic film on permalloy can change the optical and magneto-optical parameters of permalloy due to the redistribution of atoms near the interface between the layers, or due to mechanical deformations. On the other hand, due to the effect of magnetic proximity, spin polarization may occur in a non-magnetic layer. The results of computer simulation of the transverse Kerr effect for a single-layer permalloy film with variations in its optical and magneto-optical parameters and a two-layer tantalum-permalloy system are presented, as well as a comparison of the calculation results with experiment.