Multiple sensor magnetic reproducing device with reduced inter-sensor spacing
US9536549B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2015 |
| Grant date | Jan 3, 2017 |
| Priority date | — |
| Expiry date | Aug 14, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/397
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multi-sensor reader that includes a first sensor that has a sensor stack, which includes a free layer (FL) that has a magnetization that changes according to an external magnetic field. The first sensor also includes a shielding structure that is positioned over the sensor stack. The multi-sensor reader also includes a second sensor stacked over the first sensor. The second sensor includes a sensor stack, which includes a FL that has a magnetization that changes according to the external magnetic field. The multi-sensor reader further includes an isolation layer between the first sensor and the second sensor. A FL-to-FL spacing reduction feature is included in at least one of the isolation layer or the shielding structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.