Low moment material for magnetic recording head write pole
US6809901B2 · kind B2 · utility
5Cited by
21References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 2, 2002 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Aug 1, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3153
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A write pole for a magnetic recording head, such as a perpendicular magnetic recording head, includes a first layer of material adjacent a second layer of material. In one embodiment, the first layer of material has a saturation magnetic moment less than about 1.0 T and the second layer of material has a saturation magnetic moment greater than the saturation magnetic moment of the first layer of material. The first layer of material may include (NiFe)100−yXy, wherein X comprises Cr, Cu and/or Ti and wherein y is in the range of about 2 to about 50.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.