Dynamic magnetic information storage or retrieval – Head – Core
Patent
1991-12-31
1993-06-08
Tupper, Robert S.
Dynamic magnetic information storage or retrieval
Head
Core
360127, G11B 5133, G11B 531
Patent
active
052185001
ABSTRACT:
With a view to solving the problem of "pseudo-gap" in a parallel type MIG head and to improving its reproduction output, effective combinations of the principal magnetic path forming face and the gap-forming face were determined empirically for the case of using a single-crystal ferrite core material. The improved magnetic head comprises a pair of magnetic core halves made of a single-crystal ferrite, at least one of said magnetic core halves having a thin ferromagnetic metal film formed on the gap-forming face, and said thin ferromagnetic metal film abutting against the other magnetic core half with a non-magnetic material being interposed to form a magnetic gap, the improvement wherein the principal magnetic path forming face of the magnetic core half provided with said thin ferromagnetic metal film has a crystal plane generally designated {211} whereas a vector A that is parallel to the <110> crystal axis in said principal magnetic path forming face and that is directed away from the gap-forming face forms an angle .theta. of the range 0.degree.-60.degree. or 150.degree.-180.degree. with a vector B that is parallel to the intersection of the principal magnetic path forming face and the gap-forming face and that approaches the face opposite to a recording medium.
REFERENCES:
patent: 4246619 (1981-01-01), Hirai et al.
patent: 4316228 (1982-02-01), Fujiwara et al.
patent: 4439794 (1984-03-01), Shiroishi et al.
patent: 4953049 (1990-08-01), Okuda et al.
Patent Abstract of Japan, vol. 13, No. 211 (C-597), May 1, 1989 of Japanese Patent 64-28248 dated Jan. 30, 1989.
Patent Abstract of Japan, vol. 13, No. 563 (P-975), Dec. 14, 1989 of Japanese Patent 1-235010 dated Sep. 20, 1989.
Patent Abstract of Japan, vol. 11, No. 260 (P-608)(2707), Aug. 22, 1987 of Japanese Patent 62-65219 dated Mar. 24, 1987.
"Pseudo Output and Magnetic Properties of Fe-Al-Si Film in MIG Head," by A. Gyotoku et al., IEEE Translation Journal on Magnetics in Japan, vol. 5, No. 2, Feb. 1990, pp. 161-170.
Patent Abstract of Japan, vol. 10, No. 298 (P-505)(2354), Oct. 9, 1986 of Japanese Patent 61-115204 dated Jun. 2, 1986.
Ino Kazuo
Ishihara Kouzo
Kameoka Fumio
Ogura Takashi
Okuda Hiroyuki
Sanyo Electric Co,. Ltd.
Tupper Robert S.
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