For recording applications in head materials and in double-layered perpendicular recording media, soft magnetic films with high saturation flux density (B{sub}s), low coercivity (H{sub}c), high resistivity, smaller grain size (D) etc. are desired. FeCo is a soft magnetic material with high B{sub}s. However, single FeCo layer cannot be used because it has a larger D, larger H{sub}c and low permeability. Recently, we have prepared FeCo/C type of multilayers for application in double layered perpendicular recording media, which showed better performance than FeCo films [1]. In this report, we propose FeCo/FeCo-O multilayers, which showed even better promising properties, for applications in perpendicular recording media and write heads.
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