Configuring domain pattern in thin films of magnetic heads
US5373408A · kind A · utility
12Cited by
9References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 1994 |
| Grant date | Dec 13, 1994 |
| Priority date | — |
| Expiry date | May 31, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3113
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thin film magnetic head is fabricated with shaping magnetic thin films, preferably formed of Permalloy, which have a stepped configuration. The thin films are deposited between the insulation layer surrounding the electrical coil and below the second pole layer P2 to form a double yoke. The thin films have corners at the stepped areas which pin the domain sites so that the magnetization of the P2 layer is properly aligned, thereby improving the data signal that is being recorded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.