Magneto-resistive tunnel junction head having a shield lead rear flux guide
US6381107B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2000 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Mar 2, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3143
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In the present invention, a common lead and shield layer is used so as to be electrically contacted with a tunnel multilayered film for supplying a sense current to the tunnel multilayered film. The common lead and shield layer extends to a rear portion of the tunnel multilayered film from an ABS (Air Bearing Surface) so that a part of the common lead and shield layer located at the rear portion of the tunnel multilayered film serves as a back flux guide for improving a read output. Therefore, a lead gap can be remarkably reduced to easily achieve the high-density recording. Further, a large and stable head output suitable for the ultra-high density recording can be obtained with an improved biasing efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.