Magnetoresistance effect film and magnetoresistance effect type head
US6563681B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2000 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Apr 4, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3903
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A soft magnetic layer constituting a spin valve type magnetoresistance effect film comprises a multilayered body having at least two layers and including a first soft magnetic layer substantially made of Co or CoFe, and a second soft magnetic layer substantially made of NiFeX (wherein X represents at least one selected from Ta and Nb) in the order named from the side of a non-magnetic metal layer. More preferably, the soft magnetic layer comprises a multilayered body having at least three layers and including a first soft magnetic layer substantially made of Co or CoFe, a third soft magnetic layer substantially made of NiFe, and a second soft magnetic layer substantially made of NiFeX (wherein X represents at least one selected from Ta and Nb) in the order named from the side of the non-magnetic metal layer. Therefore, the detection sensitivity of a magnetic signal and the output of the magnetic head can be improved. Further, the linearity of the derived signal is also excellent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.