Shared pole magnetic read-write head for achieving optimized erase band width and method of fabricating the same
US6552874B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2000 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | May 17, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3967
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a shared pole magnetic read/write head for achieving optimized erase band width and a method for fabricating same. It has been found that there exists a relationship between a quantity delta defined as the difference between the width of the first pole and the width of the second pole and the resultant erase band width. The method of the present invention optimizes the erase band width by adjusting the value of delta and results in a read/write head useful in circumstances where the servo does not require small erase bands such as those resulting from a self-aligned pole structure having equal widths. Additionally, the alignment of the second pole relative to the first pole is not of critical importance in the read/write head of the present invention, the first pole being wider than the second pole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.