Self-aligned, notched trailing shield for perpendicular recording
US7265941B2 · kind B2 · utility
10Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2004 |
| Grant date | Sep 4, 2007 |
| Priority date | — |
| Expiry date | May 25, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49052
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A perpendicular magnetic write head having a notched, self aligned trailing shield for canting a magnetic field emitted therefrom. The invention provides a notched trailing shield that minimizes stray field formation while improving field gradient. The write head having a notched trailing shield is extremely manufacturable, being self aligned with the write pole of the perpendicular write head and using presently existing manufacturing methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.