Method and system for providing a dual-stripe magnetoresistive element having periodic structure stabilization
US7227726B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2002 |
| Grant date | Jun 5, 2007 |
| Priority date | — |
| Expiry date | Jan 12, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3951
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A dual-stripe element magnetroresistive read head for reading information from a magnetic tape. The read head includes a first insulating layer, a first active magnetoresistive layer formed on the first insulating layer, a second insulating layer formed on the first active magnetoresistive layer, a second active magnetoresistive layer formed on the second insulating layer, and a third insulating layer formed on the second active magnetoresistive layer. The second active magnetoresistive layer is magnetostatically coupled to the first active magnetoresistive layer. A periodic structure is formed on a surface of the first insulator layer. As the remaining layers are formed on the first insulating layer, the periodic structure is replicated throughout the read head. Thus, the periodic structure formed on the first insulator layer stabilizes both the first and second active layers via magnetic domain pinning for both layers along the edges of the periodic structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.