Compact MR write structure
US6466402B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1999 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Jun 18, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/313
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A compact write element for magnetically recording data on a magnetic medium and methods for making the same. The write element includes a conductive shield layer, an insulating write gap layer, a pole pedestal, a coil, and a conductive pole layer, with some embodiments further including a backgap. The pole pedestal, coil, and in some embodiments the backgap, constitute a self-aligned array of components that may be formed with a single masking operation to allow for very tight tolerances between the components for a shorter yoke length. The pole layer of the present invention is substantially flat and parallel to the conductive shield layer, providing for a shorter stack height. The present invention includes incorporation of the compact write element in both a read/write head and a magnetic data storage and retrieval system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.