Metal working – Method of mechanical manufacture – Electrical device making
Patent
1998-11-10
2000-04-11
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
G11B 542
Patent
active
060474629
ABSTRACT:
A magnetoresistive (MR) conversion element and an inductive conversion element are provided as parts of a combined type thin film magnetic head. The MR element is formed by placing a magnetoresistive film in an insulation layer between a first magnetic shield film and a second magnetic shield film. The inductive conversion element is in part formed by laminating a gap film with a coil film supported by an insulating film on the second magnetic shield film. The width of the first magnetic film is then made smaller than the width of the second magnetic shield film to form a pole of the inductive conversion element. The inductive conversion element is further formed to include a first magnetic film separated from the second magnetic shield film by a non-magnetic film which has a thickness to insure magnetic coupling between the second magnetic shield film and the first magnetic film while minimizing fringing effects. In addition, the first magnetic film is made of a material having a saturation magnetization higher than that of the material used to form the second magnetic shield film.
REFERENCES:
patent: 5802700 (1998-09-01), Chen
Mino Tetsuya
Miyauchi Daisuke
Hall Carl E.
TDK Corporation
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