Magnetoresistive sensor with improved stability
US5986856A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1997 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Oct 23, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3113
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A transducer in a magnetic storage device includes an elongated magnetoresistive element having an active region. First and second electrical contacts couple to the elongated magnetoresistive element on opposite sides of the active region. A bottom inductive write pole and shared shield is positioned adjacent the elongated magnetoresistive element and includes a body region and a pole tip region proximate the active region. The shared shield includes a notch defined between the pole tip region and the body region to thereby improve magnetic stability in the pole tip region. A top inductive write pole is spaced apart from the bottom inductive write pole and shared shield to form a magnetic gap with the pole tip region for inductively writing information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.