4. Conclusion

In addition to their contribution to spectroscopy, magneto-optical investigations are increasingly used to measure the magnetization of many materials. What's more, they enable non-destructive testing of the magnetism of multilayer structures and nano-elements intended for integration into miniaturized devices. Many researchers and engineers are trying to determine the origin of magneto-optical effects in these materials and in new structures, which is one of the aims of this article. Then, they adapt these structures to their specific problem.