G - Physics
11
B
G11B 5/193 (2006.01) G11B 5/187 (2006.01)
Patent
CA 2058656
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 - 60° or 150 - 180° 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. - 34 -
Ino Kazuo
Ishihara Kouzo
Kameoka Fumio
Ogura Takashi
Okuda Hiroyuki
Riches Mckenzie & Herbert Llp
Sanyo Electric Co. Ltd.
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