| 摘要 |
PURPOSE:To improve the initial permeability of Ni-Zn ferrite and further saturation magnetic flux density thereof. CONSTITUTION:A Te oxide of 3000ppm or less in terms of TeO2 or a Be oxide of 2500ppm or less in terms, of BeO is contained in basic ingredients comprising 45-50mol% Fe2O3 and not more than 35mol% ZnO and substantially comprising 45-50mol% NiO or Fe2O3, not more than 35mol% ZnO and not more than 10mol% CuO as the remainders and substantially consisting of the composition of NiO as the remainder. |
