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US 2002/0154444 A1Published application
Disk storage system, thin film magnetic head therefor and fabricating method thereof
AssigneeHitachi, Ltd.
InventorsMasaaki Sano, Yoshiaki Kita, Shun-Ichi Narumi, Takashi Kawabe, Moriaki Fuyama, Hisashi Takano, Hisano Yamamoto, Kenzo Masuda
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Abstract
A slider having a thin film magnetic head. The thin film magnetic head has an upper magnetic core, a lower magnetic core and a coil disposed between the upper magnetic core and the lower magnetic core. The upper magnetic core and the lower magnetic core is an electroplated thin film with an average crystal grain size smaller than 500 Å, and the electroplated thin film is made of Ni—Fe alloy of which Ni is 38 to 60 wt% and Fe is 40 to 62 wt%.
Claims4
A slider comprising:
- a thin film magnetic head;
- said thin film magnetic head has an upper magnetic core, a lower magnetic core and a coil disposed between said upper magnetic core and said lower magnetic core;
- wherein said upper magnetic core and said lower magnetic core is electroplated thin film with an average crystal grain size smaller than 500 Å, and said electroplated thin film is made of Ni—Fe alloy of which Ni is 38 to 60 wt % and Fe is 40 to 62 wt %.
Dependencies are inferred from the claim text.