Magnetic head and method of producing same
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsYukihiro Yanagiuchi, Eiichi Hirota, Hiroshi Sakakima, Harufumi Senno
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Abstract
A magnetic head and a method of producing same, wherein the magnetic head includes a head core formed of metallic magnetic material and has a head gap formed in a portion of the head core adapted to be positioned against a recording medium, and windings mounted on the head core. The material forming the head core is amorphous and has the following composition: (Co.sub.1-x M'.sub.x).sub.a Zr.sub.b Si.sub.c B.sub.d, where M' is at least one element selected from the group consisting of Cr, Mn, Fe Ni, Nb, Mo, W and Ti, 0.03.ltoreq.x.ltoreq.0.15, 3.ltoreq.b.ltoreq.25, 0.ltoreq.c.ltoreq.20, 0.ltoreq.d.ltoreq.5, and a+b+c+d=100.
Claims8
A magnetic head comprising a head core essentially formed of metallic magnetic material adapted to be positioned against and brought into contact with a recording medium, said head core being formed with a head gap in a portion thereof positioned against the recording medium and having windings mounted thereon, said metallic magnetic material being essentially amorphous and having the following composition:
- (Co.sub.1-x M'.sub.x).sub.a Zr.sub.b Si.sub.c B.sub.d, where M' is at least one element selected from the group consisting of Cr, Mn, Fe, Ni, Nb, Mo, W and Ti, 0.03.ltoreq.x.ltoreq.0.15, 3.ltoreq.b.ltoreq.25, 0.ltoreq.c.ltoreq.20, 0.ltoreq.d.ltoreq.5, and a+b+c+d=100.
A method of production of a magnetic head comprising the steps of:
- preparing a plurality of thin sheets of a predetermined shape formed of amorphous metal material of the composition (Co.sub.1-x M'.sub.x).sub.a Zr.sub.b Si.sub.c B.sub.d, where M' is at least one element selected from the group consisting of Cr, Mn, Fe, Ni, Nb, Mo, W and Ti, 0.03.ltoreq.x.ltoreq.0.15, 3.ltoreq.b.ltoreq.25, 0.ltoreq.c.ltoreq.20, 0.ltoreq.d.ltoreq.5, and a+b+c+d=100;
- and
- bonding said thin sheets together to form a lamination by using a resin in a magnetic field to provide a head core.
A method of production of a magnetic head comprising the steps of:
- preparing a plurality of thin sheets of a predetermined shape formed of amorphous material of the composition (Co.sub.1-x M'.sub.x).sub.a Zr.sub.b Si.sub.c B.sub.d, where M' is at least one element selected from the group consisting of Cr, Mn, Fe, Ni, Nb, Mo, W and Ti, 0.03.ltoreq.x.ltoreq.0.15, 3.ltoreq.b.ltoreq.25, 0.ltoreq.c.ltoreq.20, 0.ltoreq.d.ltoreq.5, and a+b+c+d=100;
- bonding said thin sheets together to form a lamination by using a resin to provide a head core;
- and
- subjecting said head core to heat treatment in a magnetic field.
Dependencies are inferred from the claim text.