NICKEL-ZINC-BASED FERRITE

摘要

PROBLEM TO BE SOLVED: To obtain a ferrite having a low dielectric loss and a high saturation magnetization by mixing powders in a composition within a specific range based on a compositional formula represented by the formula and baking the resultant mixture. SOLUTION: This ferrite is an Ni-Zn-based ferrite obtained by mixing powders and baking the resultant mixture within the ranges of 0.55<=X<=0.80, 0.001<=Y<=0.20 and 0.001<=Z<=0.04. The reason why the limitation is made on the ranges is as follows: The saturation magnetization is reduced and the dielectric loss is increased even when the composition X is below 0.55 or above 0.80. The dielectric loss is increased when the manganese composition Y is below 0.001 and is reduced when the manganese composition Y is above 0.20. The dielectric loss is increased when the zirconium composition Z is below 0.001 and the saturation magnetization is reduced when the zirconium composition Z above 0.04. The manganese and zirconium need to be added at the same time. A lower dielectric loss is obtained when the composition is Ni0.6 ZnO0.4 Fe1.96 Mn0.03 Zr0.01 O4 .