Wear resistant magnetorestrictive head
US4225892A · kind A · utility
11Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1979 |
| Grant date | Sep 30, 1980 |
| Priority date | — |
| Expiry date | Feb 5, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/255
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An MR head is disclosed in which the MR element is deposited onto a sapphire substrate with a particular crystallographic orientation and a sapphire closure piece also having a particular crystallographic orientation is used. The substrate has the MR element deposited onto either the {0001} or the {1120} plane with the {1100} plane being oriented as the wear surface. The closure piece has either the {1120} or the {0001} plane facing the MR material and the {1100} plane oriented as the wear surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.