| 摘要 |
The ferrite sintered body of hexagonal Z-type ferrite contains 17 mol% to 21 mol% of BaO, 6 mol% to 13 mol% of CoO, the remainder being Fe 2 O 3 as its main components and also contains 0.05% to 1.0% by mass of Li, based on the main components, in terms of Li 2 CO 3 and 0.05% to 0.5% by mass of Si, based on the main components, in terms of SiO 2 . Further, the rate of a spinel-type ferrite phase to entire phases including a Z-type ferrite phase and the spinel-type ferrite phase is 5% or less in terms of an area ratio in the cross section of the sintered body.
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