Effects of dispersing fine milled powder in slurry on the degree of the crystallographic orientation of anisotropic ferrite magnets were investigated. A new process in which slurry of high solid concentration is kneaded was introduced. It was found that the kneading process is effective to improve the degree of the crystallographic orientation and magnetic properties of anisotropic ferrite magnets.
Sr ferrite magnets with Br=430 mT (4300 G) and iHc=318 kA/m (4000 Oe) were obtained by combining the kneading process and decreasing the average particle size of fine milled powder.