Thin-film magnetic head
US5323282A · kind A · utility
30Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1993 |
| Grant date | Jun 21, 1994 |
| Priority date | — |
| Expiry date | Jan 8, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3103
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thin-film magnetic head has a slider formed of nonmagnetic polycrystalline Mn--Zn ferrite containing from 0.02 to 7 wt % of at least one member selected from the group consisting of CaO, MgO, ZrO.sub.2, SnO.sub.2, Al.sub.2 O.sub.3, SrO and NiO. Concave-convex surface having height difference is given to air bearings on a floatation surface side of the slider so that the convex portions occupy the area percentage in a range of from 20 to 80%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.