Dynamic magnetic information storage or retrieval – Head – Core
Patent
1994-07-08
1995-12-12
Wolff, John H.
Dynamic magnetic information storage or retrieval
Head
Core
G11B 5235
Patent
active
054755514
ABSTRACT:
A magnetic head has a pair of magnetic core substrates formed of an oxide magnetic material, at least one of the magnetic core substrates having a gap film formed on an abutment surface thereof, the pair of magnetic core substrates being abutted to each other on the gap film as abutment surfaces, having a magnetic gap formed between them. The gap film is formed of platinum, the platinum group, or an alloy consisting mainly of platinum or the platinum group. The pair of magnetic core substrates are bonded to each other to be integrated into one unit by a non-magnetic glass. The magnetic gap has a track width of not greater than 50 .mu.m. The gap film has a thickness of not greater than 150 nm. The magnetic head includes a pair of magnetic core substrates formed of an oxide magnetic material, at least one of the magnetic core substrates having a gap film formed on an abutment surface thereof, the pair of magnetic core substrates being abutted to each other on the gap film as abutment surfaces, having a magnetic gap formed between them. The gap film is selectively formed of Cr or an alloy consisting mainly of Cr, Ti or an alloy consisting mainly of Ti, or Ta.sub.2 O.sub.5 or an oxide consisting mainly of Ta.sub.2 O.sub.5. At least one of the pair of magnetic core substrates has its abutment surface inversely sputtered and then has a gap film formed thereon.
REFERENCES:
patent: 3736657 (1973-06-01), Varadi et al.
patent: 4953049 (1990-08-01), Okuda et al.
patent: 5227940 (1993-07-01), Isomura et al.
patent: 5278716 (1994-01-01), Okuda et al.
Fujisawa Norikatsu
Hayakawa Masatoshi
Honda Junichi
Kikkawa Masahiro
Kumagai Seiji
Giordana Adriana
Sony Corporation
Wolff John H.
LandOfFree
Magnetic head 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 head, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic head will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1364747