Enhanced Magneto-Optical Kerr Effects in Micron Array Thin Films with Organic-Inorganic Interfaces

The modulation of the magneto-optical signal is a crucial research focus in the field of magneto-optics. Micron arrays of varying shapes were fabricated using the UV exposure technique, and their effects were tested on the magneto-optical Kerr response of CoFeB thin films. The influence of the organic-inorganic interface on the magneto-optical Kerr effect (MOKE) was investigated by utilizing organic materials to fabricate arrays. The results indicate that the micron-scale metal array exhibits a limited enhancement of the magneto-optical Kerr signal, but it can change the ferromagnetic strength and the magnetization speed of the magnetic layer. This is because the electron orbit coupling at the organic-inorganic interface enhances the performance of the magnetic film. When a photoresist is used as the array material, the longitudinal magneto-optical Kerr signal of the CoFeB film increases by at least two-fold. The enhancement effect of different shapes of arrays is different because of the different contact area with the CoFeB film.