Perpendicular magnetic recording writer pole with leading and trailing bevel side wall angles at air bearing surface
US8520337B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2012 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Mar 30, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/315
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A perpendicular magnetic recording transducer with leading and trailing bevel side wall angles at air bearing surface for use in a data storage device is provided. The transducer includes a magnetic writer pole having a pole tip facing an air bearing surface (ABS). The pole tip includes a pole tip face having a leading edge, a trailing edge, a first side wall, and a second side wall. The first side wall includes a first side wall section adjoining the leading edge and a second side wall section adjoining the trailing edge. The first side wall section is at a first angle measured from a perpendicular center line dividing the trailing edge. The second side wall section is at a second angle measured from a perpendicular center line dividing the trailing edge. The second angle is greater than three degrees. The first angle is greater than the second angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.