Magneto-resistive head having a stable response property without longitudinal biasing and method for manufacturing the same
US7733614B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2007 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Dec 9, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N50/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments in accordance with the present invention provide a method of manufacturing a magneto-resistive head which can realize high sensitivity and good linear response characteristics with low noise even if a track width becomes narrower. A uniaxial anisotropy unaffected by annealing which is due to the orientation of the crystal grain growth direction, is induced in a magnetic layer. The free magnetic layer has the synthetic antiferromagnetic construction: first magnetic layer/interlayer antiferromagnetic coupling layer/second magnetic layer, the magnitude of the antiferromagnetic coupling is adjusted, and linear response characteristics are obtained even if a longitudinal biasing field applying mechanism is not provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.