MnZn-based ferrite and method for producing same
AssigneeTokin Corporation
InventorShota Misumi
Life of this patent
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Abstract
A MnZn-based ferrite that can suppress both reduction of the loss at a high frequency and a change in magnetic properties in a high magnetic field and a method for producing the same are provided. A MnZn-based ferrite including Fe2O3, ZnO, and MnO as main components, in which Fe2O3 is 53.2 to 56.0 mol % and ZnO is 3.0 to 12.0 mol %, with a balance of MnO, in 100 mol % of the main components, the MnZn-based ferrite includes 0.005 to 0.060% by mass of SiO2, 0.010 to 0.060% by mass of CaO, 0.10 to 0.40% by mass of CO2O3, and 0.05 to 0.30% by mass of TiO2, as auxiliary components, per 100% by mass of the main components, an average crystal grain diameter is 4 μm or less, and a sintering density is 4.8 g/cm3 or more.
Claims6
A MnZn-based ferrite comprising Fe2O3, ZnO, and MnO as main components, wherein
- Fe2O3 is 53.2 to 56.0 mol % and ZnO is 3.0 to 12.0 mol %, with a balance of MnO, in 100 mol % of the main components,
- the MnZn-based ferrite comprises 0.005 to 0.060% by mass of SiO2, 0.010 to 0.060% by mass of CaO, 0.10 to 0.40% by mass of Co2O3, and 0.05 to 0.30% by mass of TiO2, as auxiliary components, per 100% by mass of the main components,
- an average crystal grain diameter is 4 μm or less, and
- a sintering density is 4.8 g/cm3 or more.
Dependencies are inferred from the claim text.