ferrite sintered body and the ferrite core having the same

摘要

The present invention resistivity, magnetic permeability and Curie temperature is high, room temperature (25 ) is to provide a ferrite core which is formed by winding a metal wire to a small ferrite sintered body and this ferrite sintered body temperature the rate of change of the magnetic permeability of ~100 . A main component of the composition to 100 mol%, Fe and Fe2O3 translated at 49 mol% or more and 50 mol% or less, Zn below 34.5 mol% 32 mol% or more in terms of ZnO, more than 6.5 mol% in the Ni NiO conversion 12.5 mol% or less, Cu was contained in terms of CuO 5 mol% 9 mol%, and a ferrite sintered body of ZnO is present in the grain boundaries of ferrite crystal composed by a principal component. .BACKGROUND 2