Magnetic recording head with dielectric layer separating magnetic pole tips extensions from the zero throat coil insulator
US6775098B2 · kind B2 · utility
3Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2001 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Jun 1, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/313
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording head includes a zero throat formed on a bottom pole layer and a dielectric layer formed over a portion of the bottom pole layer and over a portion of the zero throat. A bottom pole extension, a gap layer, and a top pole extension are plated in a pole tip region of the recording head so that the dielectric layer separates the plated layers in the pole tip region from the zero throat. The dielectric layer reduces the magnetic flux leakage between a bottom pole extension and a top pole extension of the recording head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.