Differential CPP sensor
US6661620B2 · kind B2 · utility
7Cited by
15References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2002 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Jan 13, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/09
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A differential sensor for reading data from a magnetic medium is disclosed. The sensor comprises two GMR multilayer structures biased in opposite directions, such as to show the transitions between binary states recorded on the media as the media flows under the sensor. The biasing of the GMR structures can be accomplished using a synthetic-antiferromagnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.