METHOD OF PRODUCING ANISOTROPIC FERRITE MAGNET, ANISOTROPIC FERRITE MAGNET, HEXAGONAL FERRITE PARTICLES, AND METHOD FOR PRODUCING THEM

摘要

A slurry containing ferrite particles and an organic solvent is wet molded in a magnetic field while removing the organic solvent, to obtain a molded article. This molded article is sintered to provide an anisotropic ferrite magnet. In this case, a surfactant is added to the slurry during wet molding. In addition to the surfactant or in place thereof, the ferrite particles are pulverized so as to impart at least 1 x 10-4 of strain of a (206) plane measured by X-ray diffraction, and to reduce iHc preferably below 3.5 kOe. In these ways, orientation of the molded article can be drastically improved, and extremely high magnetic characteristics can be obtained. IMAGE