| 摘要 |
PURPOSE: A Y-type ferrite and a ferrite molding product manufactured by using thereof are provided to increase magnetic permeability and lower investment loss at high frequency bands which is higher than 1GHz. CONSTITUTION: A Y-type ferrite is represented by chemical formula 1. The chemical formula 1 is same as follow: Ba2CoaZnbCucMndFe12O22. In the chemical formula 1, a, b, c, and d are positive numbers and satisfy following condition: 1.8 <= a + b + c + d <= 2.2. In frequency band of 1-3GHz, the magnetic permeability is 2 or greater. In frequency band of 1GHz, the magnetic permeability is 4-6, and in frequency band of 2.4GHz is 3.5-3.9. In frequency band of 1-3GHz, the investment loss is 1 or less. The ferrite molding product includes Y-shaped ferrite. The ferrite molding product has a film, a sheet, or a block shape.
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