| 摘要 |
PURPOSE:To obtain a oxide magnetic material applicable as a magnetic core material for high-frequency band capable of manufacturing at low cost. CONSTITUTION:This oxide magnetic material is composed of spinel type ferrite sintered body mainly comprising Ni, Cu, Fe further dispersion-containing 0-60wt.% of NiO phase (but not containing 0). This oxide magnetic material in the less magnetic core loss by separating NiO (Q as inverse number of the loss coefficient tandelta is increased) further increasing the high-frequency can be used as a magnetic core material. The magnetic core characteristics of this material in the intensity ratio of X-ray diffraction rays INiO/(Ispinel+INiO) not exceeding 50% and effective permeability mu10MHz in 100MHz exceeding 2 make said intensity ratio applicable within the range of 0-50%. At this time, the range of said intensity ratio not exceeding 50% corresponds to the range of NiO mixture ratio not exceeding 60wt.%. |
