Perpendicular magnetic recording head with a multilayered main write pole
US6822829B2 · kind B2 · utility
16Cited by
24References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2002 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Jul 13, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0029
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A perpendicular magnetic recording head includes a multilayered main write pole. The main write pole includes a first layer of material, a second layer of material, and an interlayer positioned between the first layer of material and the second layer of material. The second layer of material has a saturation magnetic moment greater than a saturation magnetic moment of the first layer of material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.