Oxide magnetic material, coil components using the same, and method for producing oxide magnetic materials and coil components
US6558807B2 · kind B2 · utility
3Cited by
4References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 19, 2001 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Jan 19, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F41/046
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
To use a media agitating mill of a wet internal circulation type when grinding materials, and offer oxide magnetic materials and coils in which influences of ZrO2 and Y2O3 mixing when using partially stabilized zirconia as media beads are improved. The magnetic materials and coils are characterized in that Fe2O3, ZnO, NiO and CuO are main components, and Y2O3, ZrO2 and Bi2O3 are contained with respect to these main components, where an amount of Y2O3 is 0.007 to 0.028 wt % for the total amount, an amount of ZrO2 is 0.12 to 0.55 wt % therefor and an amount of Bi2O3 is 0.03 to 10.12 wt % for the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.