Magnetoresistive sensor shield
US8988832B2 · kind B2 · utility
7Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2013 |
| Grant date | Mar 24, 2015 |
| Priority date | — |
| Expiry date | Jul 30, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1193
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Implementations disclosed herein allow a signal detected by a magnetoresistive (MR) sensor to be improved by providing for a region of reduced anisotropy within a synthetic antiferromagnetic (SAF) shield. The SAF shield includes first and second layers of ferromagnetic material separated by a coupling spacer layer. A distance between the first and second layers of ferromagnetic material is greater in a region proximal to the sensor stack than in a region away from the sensor stack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.