| 摘要 |
PROBLEM TO BE SOLVED: To restrain fluctuations of initial permeability due to temperature changes to be small, in a high permeability oxide magnetic material which is used for magnetic components such as noise filter, choke coil and pulse transformer. SOLUTION: TiO2 in a range of 0.1-2% and CO3O4 in a range of 0.01-0.2% are added to main component of Mn-Zn ferrite, and a secondary peak of initial permeability is made to appear in a range of -40 to 0 deg.C. Thereby not only the crystal magnetic anisotropy but also initial permeability of Mn-Zn ferrite are changed by compound addition of two kinds of subcomponents TiO2 and CO3O4, but also the temperature characteristic of Mn-Zn ferrite is changed. |
