Patent ID: 6737012
Filing Date: 2004-05-18
Classification: C01G,C01P,C04B,H01F,Y10T

Abstract:
A method of producing magnetic ferrite, comprising:mixing raw powders; pre-sintering said mixed raw powders at temperature of 900Â° C. or lower; milling the pre-sintered mixed raw powders to form a milled powder having a particle size distribution with a peak position of from 0.3 to 1.2 &mgr;m; pressing the milled powder into a shape to form a pressed body; and sintering the pressed body to form a MgCuZn magnetic ferrite, wherein said raw powders comprise at least Fe2O3 powder, CuO powder, ZnO powder and at least one powder selected from the group consisting of MgO, Mg(OH)2 and MgCO3.