Magnetic device with improved antiferromagnetically coupling film
US6893741B2 · kind B2 · utility
16Cited by
17References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2003 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Sep 10, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2495
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention is a magnetic device, i.e., a magnetoresistive sensor or a magnetic tunnel junction device, that has a ferromagnetic structure of two ferromagnetic layers antiferromagnetically coupling together with an improved antiferromagnetically coupling (AFC) film. The AFC film is an alloy of Ru100-xFex where x is between approximately 10 and 60 atomic percent. This AFC film increases the exchange coupling by up to a factor or two and has an hcp crystalline structure making it compatible with Co alloy ferromagnetic layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.