Hitachi, Ltd.

Kohji Tamura

Takaharu Noguchi

Tetsu Oi

Katsuo Konishi

Mitsuo Abe

Takao Ketori

Yutaka Miyoshi

Kanji Kawano

A thin film magnetic head is composed of a first thin film of a magnetic material deposited on a non-magnetic substrate. A V-like groove is formed in the first magnetic thin film with a depth reaching the non-magnetic substrate. One wall face of the V-like groove is deposited with a non-magnetic thin film, and the V-like groove is filled with a second magnetic thin film. A magnetic gap provided by the non-magnetic thin film is used as the magnetic head gap.

Thin film magnetic head and method of manufacturing the same

A method for fabricating a rear core for the magnetic circuit of a Hall effect magnetic head is disclosed. The bottom size of the rear core protrusion is made substantially equal to the size of a Hall element. A gap is provided between the Hall element and the rear core. In order to minimize the gap, the rear core block is provided with supports for fabrication, whereby the gap between the Hall element and the bottom protrusion of the rear core is positioned accurately. The supports are removed at the end of fabrication. The bottom protrusion of the rear core prevented pressure from being applied to the Hall element, thus improving the sensitivity of the Hall effect magnetic head without increasing noises.

Method for fabrication of rear chip for hall effect magnetic head

Growing community of inventors

Yokohama, Japan

Kohji Tamura