Perpendicular magnetic write head and magnetic recording device
US8233237B2 · kind B2 · utility
5Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2010 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Aug 24, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/315
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A main magnetic-pole layer is provided with, at the tip end portion thereof, a trailing shied on the trailing side via a non-magnetic gap layer, and the non-magnetic gap layer includes therein one or more magnetic layers. This magnetic layer appropriately controls the amount of magnetic fluxes coming from the tip end portion of the main magnetic-pole layer for capturing into the trailing shield because the magnetic fluxes coming from the tip end portion of the main magnetic-pole layer go through the magnetic layer before being captured into the trailing shield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.