Magnetic recording head with high saturation magnetization write pole having alternating interface-defining Fe/Co layers
US6795273B2 · kind B2 · utility
12Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2003 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Jan 6, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0029
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording head includes a write pole having alternating layers of Fe and Co and a return pole magnetically coupled to the write pole. The layers of Fe may have a thickness from about 1.0 angstroms to about 40.0 angstroms and the layers of Co may have a thickness from about 1.0 angstroms to about 20.0 angstroms. The write pole may have a saturation magnetization greater than about 2.45 Tesla. A method for forming a write pole for a magnetic recording head is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.