Magnetic head having writer with embedded write gap between wear-resistant pole tip layers
US7359151B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2005 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | May 9, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3116
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of fabricating a magnetic writer includes depositing a wear-resistant bottom pole tip layer on a bottom pole; depositing a write gap layer on the bottom pole tip layer; and depositing a wear-resistant top pole tip layer on the write gap layer. The layers are patterned such that the write gap layer and the top pole tip layer each have a track width facing a media surface and the write gap layer and the top pole tip layer each have the same length equal to a throat height between the media surface and a zero throat location. The bottom pole tip layer and the bottom pole are patterned such that the bottom pole tip layer has the track width facing the media surface and the bottom pole has a bottom pole tip at the media surface with the bottom pole tip having the track width facing the media surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.