Magneto-resistive element in which a free layer includes ferromagnetic layers and a non-magnetic layer interposed therebetween
US7561385B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2005 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Apr 22, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/39
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magneto-resistive element comprising a free layer having two ferromagnetic layers having a nonmagnetic layer interposed therebetween are coupled with each other in an anti-ferromagnetic manner, a difference between an absolute value of a total of magnetizations of at least one ferromagnetic layer in which the magnetization direction is a first direction and an absolute value of a total of magnetizations of at least one ferromagnetic layer in which the magnetization direction is a second direction which is opposite to the first direction is equal to or smaller than 5×10−15 emu, and planes parallel to a substrate of the ferromagnetic layers are smaller as the planes are distant from the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.