| 摘要 |
PROBLEM TO BE SOLVED: To provide a ferrite core having small saturation magnetostriction near to 100°C, suppressed sound squeak at drive and high saturation flux density.SOLUTION: There is provided a ferrite core 10 which is a MnZn-based ferrite containing iron oxide of 51.5 to 54.5 mol% in terms of FeO, zinc oxide of 7.0 to 11.5 mol% in terms of ZnO and the balance manganese oxide as a main component, and Ni of 500 to 10000 ppm in terms of NiO, Ti of 100 to 6000 ppm in term of TiOand Co of 500 to 4000 ppm in terms of CaO to the main component. |
