Magnetic read element shield having dimensions that minimize domain wall movement
US6222702A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1998 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Aug 13, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3912
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A shield for a read element of a magnetic recording head is disclosed. The shield includes a first and a second triangular shaped closure magnetic domains positioned approximate a top surface of the shield such that a first surface of each of the first and second magnetic domains are formed by a portion of a first side of the shield and a second side of the shield, respectively. The shield also includes a third and a fourth triangular shaped closure magnetic domains positioned approximate the bottom surface of the shield. A first surface of the third and fourth magnetic domains are formed by a portion of the first side and the second side of the shield, respectively. A first magnetic domain wall is positioned between the first and second triangular shaped closure magnetic domains, while a second magnetic domain wall is positioned between the third and fourth triangular shaped closure magnetic domains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.