Fujitsu Corporation

Hiroki Fujimoto

Ikuya Tagawa

Hiroshi Maeda

Yoshinori Ohtsuka

Yukinori Ikegawa

Tomoko Kutsuzawa

Takashi Sekikawa

Hideo Niwa

A thin film magnetic head includes an upper magnetic pole maintaining a constant thickness in a range determined by the so-called gap depth. A thinner film portion is defined in the upper magnetic pole in a range rearward of the range determined by the gap depth. The thinner film portion has a reduced thickness smaller than the constant thickness. The upper magnetic pole starts to enlarge the core width in the lateral direction at the rear end of the region determined by the so-called neck height. The neck height smaller than the gap depth serves to establish a reduction in the thickness of the upper magnetic pole after the upper magnetic pole gets larger in the lateral direction. A magnetic saturation can reliably be prevented at the thinner film portion in the upper magnetic pole. The front end of the upper magnetic pole is allowed to receive a larger quantity of a magnetic flux. It is possible to reliably enhance a magnetic field for recordation in the thin film magnetic head.

Thin film magnetic head

Growing community of inventors

Kawasaki, Japan

Hiroki Fujimoto