FERRITE SINTERED COMPACT AND FERRITE CORE PROVIDED WITH SAME

摘要

[Problem] To provide a ferrite sintered compact having a high specific resistance, magnetic permeability, and Curie temperature, as well as a low rate of thermal variation in magnetic permeability at room temperature (25°C) to 100°C; and to provide a ferrite core formed by winding a metal wire onto the ferrite sintered compact. [Solution] A ferrite sintered compact containing 49-50 mol% of Fe expressed as Fe2O3, 32-34.5 of Zn expressed as ZnO, 6.5-12.5 mol% of Ni expressed as NiO, 5-9 mol% of Cu expressed as CuO, of the 100 mol% main component composition; ZnO being present in the grain boundary of the ferrite crystals composed of the main components.