Soft magnetic thin film comprising alternate layers of iron carbide with either iron, iron nitride or iron carbon-nitride
US5068147A · kind A · utility
28Cited by
3References
15Claims
0Family size
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Key dates
| Filing date | Apr 27, 1989 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Apr 27, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a soft-magnetic thin film, layers of iron carbide are laminated alternately with layers of at least one of iron, iron nitride and iron carbon-nitride and when needed, layers of non-magnetic material. The thin film provides particular features including 1) saturation magnetic flux density of at least 1.5 teslas; 2) relative permeability and coercive force greater than those of the conventional soft-magnetic material; and 3) durability for practical use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.