Thin film of Ni-Co-Fe ternary alloy and process for producing the same
US4623439A · kind A · utility
6Cited by
5References
3Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 5, 1984 |
| Grant date | Nov 18, 1986 |
| Priority date | — |
| Expiry date | Oct 5, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F41/14
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A magnetic thin film of Ni-Co-Fe ternary alloy containing at most 75% by weight of Ni, 10 to 90% by weight of Co, and at most 15% by weight of Fe, which shows the magnetostriction constant between +2.times.10.sup.-6 to -2.times.10.sup.-6 and shows a uniaxial magnetic anisotropy of at most 10 Oe. The film is formed through the vacuum evaporation of the alloy during which two orthogonal external magnetic fields, directions x and y, are alternately applied over the deposition surface of a substrate. The film is suitable for a core material of a thin film magnetic head with a higher recording density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.