Compact MR write structure
US6894877B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2002 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Nov 6, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/313
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A compact write element includes a conductive shield layer, an insulating write gap layer, a pole pedestal, a coil, and a conductive pole layer, and, in some embodiments also includes a backgap. The pole pedestal and the coil, and, in some embodiments the backgap, constitute a self-aligned array of components that may be formed in a single masking operation to allow for very tight tolerances between the components for a shorter yoke length. The pole layer is substantially flat and parallel to the conductive shield layer, providing for a shorter stack height. Also, a compact MR read/write head includes such a write element and a magnetic data storage and retrieval system includes the compact MR read/write head having such a write element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.