Pole tip shield for a magnetic write element having notched or truncated side shields
US8649125B1 · kind B1 · utility
12Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2012 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Sep 14, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The application discloses pole tip shield assemblies for a magnetic write element. The shield assemblies disclosed include side shields to limit adjacent track interference. The side shields are truncated or notched at a midpoint to form an expanded non-magnetic gap along a trailing portion of the pole tip to enhance write field and/or field gradient. The expanded non-magnetic gap region is larger than the non-magnetic gap region along a leading portion of the pole tip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.