Dynamic magnetic information storage or retrieval – Head – Core
Patent
1985-03-19
1989-04-04
Tupper, Robert S.
Dynamic magnetic information storage or retrieval
Head
Core
360122, G11B 5187, G11B 5147
Patent
active
048191132
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 the boundary layer with inferior magnetic properties.
Likewise, the provision of the non-magnetic film having high-hardness between the ferromagnetic metal thin film and the oxide glass is effective to prevent the erosion of the film by the molten glass, while also improving the molten glass fluidity.
It should be noted that the non-magnetic films having high-hardness may be provided on the interface only between the core elements and the metal thin films or on the interface only between the metal thin films and the oxide glass.
REFERENCES:
patent: 4182643 (1980-01-01), Calderon, Jr. et al.
patent: 4392167 (1983-07-01), Joormann
patent: 4559572 (1985-12-01), Kumasaka et al.
Kobayashi Tomio
Kubota Makoto
Kumura Tatsuo
Saito Junichi
Sato Heikichi
Koval Melissa J.
Sony Corporation
Tupper Robert S.
LandOfFree
Magnetic transducer head with inclined magnetic gap does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic transducer head with inclined magnetic gap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic transducer head with inclined magnetic gap will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-184333