| 摘要 |
PROBLEM TO BE SOLVED: To provide a sintered magnetic oxide which has excellent magnetic properties and is usable up to a high-frequency band of a few hundred MHz to GHz, contains no dissimilar phase other than Y-type hexagonal ferrite as much as possible, and can be baked at 1000 deg.C or below, especially around 900 deg.C, and to provide a high-frequency circuit part using the same. SOLUTION: This magnetic oxide sintered body contains Y-type hexagonal ferrite of 80% or above. The magnetic oxide sintered body contains 3 to 15 mol% cobalt oxide in terms of CoO, 5.5 to 17 mol% copper oxide in terms of CuO, 57 to 61 mol% iron oxide in terms of Fe2 O3 , and residual mol% AO (AO is either BaO or SrO) and 0.5 to 7 wt.% bismuth oxide(Bi2 O3 ) as an auxiliary component. |
