Thin film heads with insulated laminations for improved high frequency performance
US5750275A · kind A · utility
21Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1996 |
| Grant date | May 12, 1998 |
| Priority date | — |
| Expiry date | Jul 12, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1186
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic thin film recording head includes laminated magnetic pole members, adjacent pole members being separated from each other by nonmagnetic insulating layers to reduce eddy current effects between the laminated members. The nonmagnetic insulating layers extend from the throat region of the head toward the pole tip region and terminate at a distance from the air bearing surface which is a function of the skin depth of the magnetic pole material for the particular recording frequency range being employed in the head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.