Patent ID: 7438946

Claim:
A method of manufacturing a ferrite film the method includes the steps of: bringing a reaction solution containing at least a ferrous ion into contact with a substrate; removing the reaction solution from the substrate; bringing an oxidizing solution containing at least an oxidant into contact with the substrate; and removing residue that does not contribute to the formation of the ferrite film of the reaction solution and the oxidizing solution from the substrate, wherein the ferrite film has magnetic anisotropy or is magnetically isotropic; has a ratio of peak in intensities corresponding to a (222) crystal lattice plane and a (311) crystal lattice plane in an x-ray diffraction pattern of a surface of the film and is represented by I 222 /I 311 , said ratio being larger than 0.05; is composed of at least one of Ni, Zn, Fe, and O and contains Co in a molar ratio of Co/(Fe+Ni+Zn+Co) of 0.01/3 to 0.3/3.