HEXAGONAL FERRITE MAGNETIC POWDER AND METHOD OF PRODUCING MOLDING OF RAW MATERIAL FOR HEXAGONAL FERRITE MAGNETIC POWDER AND MOLDING OF RAW MATERIAL FOR HEXAGONAL FERRITE MAGNETIC POWDER

摘要

PROBLEM TO BE SOLVED: To solve such a problem of glass crystallization method that although hexagonal ferrite magnetic powder having excellent characteristics can be produced, there are many variations in the characteristics, due to feed error occurring slightly when melting a raw material.;SOLUTION: In a method of producing a molding of raw material for hexagonal ferrite magnetic powder including a molding step for bringing a ferrite material, a glass material and an additive material becoming a magnetic material raw material into condensed state, a molding of the raw material is produced previously. Consequently, deviation of the composition ratio in a melting furnace from a target composition ratio, due to blow-away of a part of the raw material can be prevented, when the raw material is melted, and a stabilized hexagonal barium ferrite magnetic powder can be obtained.;COPYRIGHT: (C)2015,JPO&INPIT