Magnetoresistive head in which an interlayer coupling field applied to a free magnetic layer is reduced
US6819533B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2000 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Feb 5, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/3996
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
5 There is disclosed a magnetoresistive head in which an interlayer coupling field Hin applied to a free magnetic layer is minimized. The magnetoresistive head is provided with a magnetoresistive film including: a first antiferromagnetic layer 2; a pinned magnetic layer 3 formed on the first antiferromagnetic layer 2 and provided with magnetization whose direction is fixed; a first nonmagnetic layer 4 formed on the pinned magnetic layer 3; a free magnetic layer 5 formed on the first nonmagnetic layer 4 and provided with magnetization whose direction changes in accordance with an external magnetic field; a second nonmagnetic layer 6 formed on the free magnetic layer 5; and a second antiferromagnetic layer 7, formed on the second nonmagnetic layer 6, for applying a bias magnetic field generated by static interlayer coupling and directed in a direction opposite to magnetization direction of the pinned magnetic layer 3 to the free magnetic layer 5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.