| abstract |
An object of the present invention is to provide a means for producing a homogeneous ferrite sintered body that is less prone to cracking by gel casting. In producing a ferrite sintered body, a median diameter D 50 [μm] is 0.1 μm or more and 0.8 μm or less, and a spinel synthesis degree is 45% or more and 90% or less, Ferrite powder having a remanent magnetization Br [emu / g] per unit mass when a maximum magnetic field of 15 kOe is applied satisfies the following formula, 0.05 ≦ Br ≦ 2.0 lnD 50 +6.3. [Selection figure] None |