METHOD FOR STRENGTHENING THE MAGNETO-OPTICAL EFFECT OF KERR BY USING PHOTON-CRYSTAL STRUCTURES

摘要

1. A method of enhancing the magneto-optical Kerr effect by forming a magnetic photonic crystal with a periodically structured surface of a magnet. 2. The method according to claim 1, characterized in that the magnet has an inverted colloidal crystal structure with a period of structure from 250 to 1900 nm. The method according to claim 2, characterized in that the surface morphology of the magnetic photonic crystal is determined by the cutoff level of the densest face-centered cubic packing of microspheres in the 111 plane within the colloidal crystal layer. The method according to claim 3, characterized in that the formation of the magnetic photonic crystal is carried out by the template method by electrodeposition of metal in the pores of synthetic opal, followed by removal of the matrix. The method according to claim 4, characterized in that the magnetic photonic crystal is a film with a thickness of from 0.1 to 60 microns. The method according to claim 4, characterized in that the inverted photonic crystal consists of Ni, Co, Fe or alloys containing these metals. The method according to claim 4, characterized in that the degree of filling the voids of the colloidal crystal with a metal is more than 95%. The method according to claim 4, characterized in that the cut-off level of the structure of the inverted photonic crystal is controlled by reflection spectroscopy during metal deposition. The method according to claim 4, characterized in that the heterogeneity of the cutoff level of the outer layer of the magnetic photonic crystal within the layer does not exceed 10% of the structure period over an area of 1 cm. The method according to claim 9, characterized in that the position of the reflection maxima in the spectra of the magnetic photonic crystal in the range of 300-2000 nm is determined by the surface morphology of the outer layer of the