MAGNETO-OPTICAL CHARACTERISTICS OF BAM FERRITE CO-OXIDE MULTILAYERED FILMS/

Multilayers composed of 25 bilayers of magnetoplumbite type of barium ferrite(BaM) layers as thin as 120 Angstrom and CoO or Co3O4 layers on ZnO/SiO2/Si substrates were prepared by vacuum-arc evaporation. X-ray diffraction indicated these multilayers possessed clear periodic stru cture with sharp and flat interfaces. Mossbauer spectroscopy indicated strong magnetic interactions among the iron and cobalt ions through t he interfaces. The apparent orientation of magnetic spins in the BaM/C oO multilayer was parallel to the layer planes. Multilayer exhibited a magnetic spin orientation which was oblique to the layer planes, a co ercivity H-c of 2.0 kOe and Kerr rotation angle theta(K) of 10 min.