Magnetic material, electronic component, and method for manufacturing magnetic material
US11869692B2 · kind B2 · utility
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Key dates
| Filing date | Jun 14, 2018 |
| Grant date | Jan 9, 2024 |
| Priority date | — |
| Expiry date | Feb 14, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C2202/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnetic material includes a soft magnetic metal grain containing Fe, and a multilayer oxide film covering the surfaces of the soft magnetic metal grain. The multilayer oxide film has a first oxide layer of crystalline nature containing Fe, and a second oxide layer of amorphous nature containing Si. In an embodiment, the silicon oxide film of amorphous nature is formed by dripping, divided into multiple sessions, a treatment solution containing TEOS (tetraethoxy silane), ethanol, and water into a mixed solution containing the soft magnetic metal grain, ethanol, and ammonia water, to mix the solutions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.