Thin film magnetic head having magnetic core including a thin film of cobalt alloy
US4939610A · kind A · utility
11Cited by
0References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1988 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Oct 3, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/31
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thin film magnetic head is disclosed which includes a substrate, a first magnetic core disposed on the substrate, a second magnetic core forming a magnetic path in conjunction with the first magnetic core, a conductor coil wound in the magnetic path and a gap formed between ends of the first magnetic core and the second magnetic core. At least one of the first magnetic core and the second magnetic core includes a thin film of a cobalt alloy. The cobalt alloy includes 20-70 atomic percent of cobalt, 20-60 atomic percent of nickel, 12-30 atomic percent of iron and 5-32 atomic percent of palladium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.