CPP-type magnetic head with less deformation and a magnetic recording/reproducing system using the same
US7154713B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2006 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Jan 3, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/3996
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A high output, magnetoresistive head with a CPP structure is disclosed which reduces or prevents deformation near the air bearing surface of the read element portion layer at the time of air bearing surface processing. In the CPP structure magnetoresistive head, the deformation near the air bearing surface as a result of mechanical polishing during the air bearing surface processing can be reduced by forming deformation prevention layers having a higher shear modulus than the first ferromagnetic layer, and a second ferromagnetic layer between a magnetoresistive film and at least one of a lower shield layer and an upper shield layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.