Thin shield structure for reduced protrusion in a magnetoresistive head
US7652853B2 · kind B2 · utility
2Cited by
21References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2005 |
| Grant date | Jan 26, 2010 |
| Priority date | — |
| Expiry date | Aug 17, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/115
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic data recording head having reduced thermally induced shield (pole tip) protrusion. The head includes a magnetoresistive sensor sandwiched between first and second shield. The shields have a substantially reduced thickness. The distance between the shields defines a gap (G) and the shields each have a thickness (ST) such that the ratio ST/G is greater than 2, but less than 50. More preferably the ratio ST/G is greater than 2, but less than 20, and yet more preferably, the ratio ST/G is greater than 2 and less than 10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.