Exchange coupling film, magnetoresistance effect device, magnetoresistance effective head and method for producing exchange coupling film
US6258470A · kind A · utility
56Cited by
4References
40Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 12, 1999 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Jan 12, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1121
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An exchange coupling film of the present invention includes a ferromagnetic layer and a pinning layer which is provided in contact with the ferromagnetic layer for pinning a magnetization direction of the ferromagnetic layer, the pinning layer including an (AB).sub.2 O.sub.x layer, wherein: O denotes an oxygen atom; 2.8<x<3.2; and a value t as defined by: PA1 t=(Ra+Ro)/(2.multidot.(Rb+Ro)) PA1 (where Ra, Rb and Ro denote the ion radii of the atoms A, B and O, respectively) satisfies 0.8<t<0.97.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.