OPTICAL AND MAGNETOOPTICAL PROPERTIES OF COPPER AND COBALT-MANGANESE FERRITE THIN-FILMS

Optical absorption and Faraday rotation of copper and cobalt-manganese ferrite thin films, prepared by sputtering, were measured in the visi ble and near infrared spectral regions. Main magneto-optical features can be explained by the respective transitions of Cu2+ and Co2+ ions t etrahedrally and octahedrally coordinated. Annealings at 450 and 665 d egrees C cause migration of these ions into tetrahedral positions and, consequently, increase corresponding peaks in the figure of merit The refore, these films range among the promissing materials for the magne to-optical recording.