Magnetic head incorporating an amorphous magnetic metallic film having a thickness equal to a track width
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsNoboru Nomura, Eiichi Hirota, Kiyotaka Wasa
Life of this patent
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Abstract
A magnetic head includes at least a core for constituting a magnetic circuit and a magnetic gap formed in the core. The core comprises an amorphous magnetic metallic film formed on a non-magnetic high-resistance substrate so that one of the end faces of the non-magnetic high-resistance substrate and the amorphous magnetic metallic film may be brought into contact with a magnetic recording medium.
Claims24
A magnetic head including at least a core for constituting a magnetic circuit, and a magnetic gap formed in said core, said core comprising:
- a support substrate having a first face which is brought into contact with a magnetic recording medium;
- a portion including said first face of said support substrate or said substrate as a whole being made of a non-magnetic high-resistance material;
- and
- an amorphous magnetic metallic film deposited on one or a plurality of faces of said support substrate, which abut on said first face of said support substrate, and deposited at least on said non-magnetic high-resistance material portion, said amorphous magnetic metallic film having a thickness equal to a track width.
A magnetic head including at least a core for constituting a magnetic circuit, and a magnetic gap formed in said core, said core comprising:
- a first core portion and a second core portion in one unit so that said first core portion and said second core portion confront each other through said magnetic gap therebetween;
- at least either one of said first core portion and said second core portion being formed with a first face which is brought into contact with a magnetic recording medium;
- a portion including said first face of at least either one of said first core portion and said second core portion being made of a non-magnetic high-resistance material;
- and
- an amorphous magnetic metallic film deposited on one face of at least either one of said first core portion and said second core portion, which abuts on said first face, said amorphous magnetic metallic film having a thickness equal to a track width.
A magnetic head including at least a core for constituting a magnetic circuit, and a magnetic gap formed in said core, said core being composed of:
- a first core portion and a second core portion in one unit so that said first core portion and said second core portion confront each other through said magnetic gap therebetween;
- at least either one of said first core portion and said second core portion being formed with a first face which is brought into contact with a magnetic recording medium;
- a portion including said first face of at least either one of said first core portion and said second core portion being made of a non-magnetic high-resistance material;
- and
- an amorphous magnetic metallic film deposited, through an oxide layer, on one face of at least either one of said first core portion and said second core portion, which abuts on said first face, said amorphous magnetic metallic film having a thickness equal to a track width.
A magnetic head including at least a core for constituting a magnetic circuit, and a magnetic gap formed in said core, said core comprising:
- a first core portion and a second core portion in one unit so that said first core portion and said second core portion confront each other through said magnetic gap therebetween;
- at least either one of said first core portion and said second core portion being formed with a first face which is brought into contact with a magnetic recording medium;
- a portion including said first face of at least either one of said first core portion and said second core portion being made of a non-magnetic high-resistance material;
- and
- a plurality of insulating layers and amorphous magnetic metallic films being alternately deposited as a laminate of layers on one face of at least either one of said first core portion and said second core portion, which abuts on said first face, said laminate having a thickness equal to a track width.
A magnetic head including at least a core for constituting a magnetic circuit, and a magnetic gap formed in said core, said core comprising:
- a first core portion and a second core portion in one unit so that said first core portion and said second core portion confront each other through said magnetic gap therebetween;
- either one of said first core portion and said second core portion comprising an amorphous magnetic metallic film deposited on a non-magnetic high-resistance substrate, said amorphous magnetic metallic film having a thickness equal to a track width;
- and
- one end face of said non-magnetic high-resistance substrate and said amorphous magnetic metallic film being brought into contact with a magnetic recording medium.
Dependencies are inferred from the claim text.