Magnetic transducer head with inclined magnetic gap
US4819113A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1985 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Mar 19, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/127
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic transducer head in which the magnetic core elements of ferromagnetic oxides are sliced obliquely across the junction surface of the core elements, ferromagnetic metal thin films are formed on the resulting inclined surfaces by employing a physical vapor deposition, and the core elements are placed with the respective ferromagnetic metal thin films abutting to each other for defining a magnetic gap therebetween, wherein the improvement consists in that said inclined surfaces with the ferromagnetic metal thin films formed thereon are inclined at a preset angle with the magnetic gap forming surface, in that non-magnetic films having high-hardness are interposed between the ferromagnetic oxide and the ferromagnetic metal thin films, and in that said ferromagnetic metal thin films and the oxide glass fillers are provided on the tape abutment surface by the intermediary of the non-magnetic film having high-hardness. The provision of the non-magnetic film having high-hardness between the ferromagnetic oxide and the ferromagnetic metal thin film is effective to inhibit the reaction otherwise occurring between the oxide and the films, while positively preventing the formation of …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.