Thin film magnetic head including soft layer magnetically connected with shield
US8462467B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2010 |
| Grant date | Jun 11, 2013 |
| Priority date | — |
| Expiry date | Jun 22, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F10/3254
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thin film magnetic head includes: a magneto resistance effect film of which electrical resistance varies corresponding to an external magnetic field; a pair of shields provided on both sides in a manner of sandwiching the MR film in a direction that is orthogonal to a film surface of the MR film; an anisotropy providing layer that provides exchange anisotropy to a first shield of the pair of shields in order to magnetize the first shield in a desired direction, and that is disposed on the opposite side from the MR film with respect to the first shield; and side shields that are disposed on both sides of the MR film in a track width direction and that include soft magnetic layers magnetically connected with the first shield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.