Magnetic head and method of manufacture
US6183891A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1997 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Jun 19, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1171
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method of manufacturing a thin-film magnetic head comprising an inductive transducing system. A non-magnetic, insulating material for forming a first insulation layer (13), on which an inductive transducing element (15) is formed, is deposited on a plane basic surface (11). Subsequently, a non-magnetic, insulating material for forming a second insulation layer (19) is deposited on the first insulation layer and the inductive transducing element formed thereon. Subsequently, material is removed in an area proximate to a head face (30) to be formed for forming an aperture extending through the first and the second insulation layer and reaching as far as the basic surface, whereafter a non-magnetic, insulating material for forming a gap layer (29) is deposited in the aperture. Subsequently, a soft-magnetic material for forming a first soft-magnetic layer is deposited on the gap layer, whereafter the soft-magnetic layer (31), as well as adjoining, uncovered layer parts of deposited non-magnetic, insulating material are planarized to form a plane surface. Subsequently, a soft-magnetic material is deposited on this surface for forming a second soft-magnetic layer (35) which, jointly with…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.