Hitachi, Ltd.

Hitachi Global Storage Technologies Japan, Ltd.

Atsuko Kuroda

Masafumi Mochizuki

Takuya Matsumoto

Takayuki Ichihara

Fumio Isshiki

A thin film magnetic head for perpendicular recording of a single-pole type has a flux enhanced part and a flux enhanced end arranged on a leading side of the main pole in parallel with the cross track direction. The side surface of the main pole intersecting the cross track direction is arranged on the track center side perpendicular to the track width. The field gradient of a perpendicular magnetic field on the trailing side of the main pole and near both ends of the track is made steep to realize a higher areal recording density. The head is fabricated by forming a first resist pattern on an inorganic insulating layer. A slope is formed on the inorganic insulating layer with the resist pattern as a mask. A second resist pattern is then formed on the inorganic insulating layer to form a magnetic layer on the inorganic insulating layer.

Fabrication method of a high gradient-field recording head for perpendicular magnetic recording

A vertical magnetic recording apparatus is provided which can diminish thermal decay of magnetization to ensure a high reliability of the life of recorded information and which can stably effect the write of magnetic information. Light assist is performed by obliquely applying light to a gap between a main pole of a vertical recording head and a medium. The light is radiated from the head side of the apparatus with respect to the medium. Utilizing the present invention, the thermal decay of magnetization at room temperature is diminished, the life of the recorded information is increased, and the storage reliability of the disk is increased.

Apparatus and method for recording information

A thin film magnetic head for perpendicular recording of a single-pole type has a flux enhanced part and a flux enhanced end of a main pole arranged on a leading side of the main pole in parallel with the cross track direction. The side surface of the main pole intersecting the cross track direction of the main pole is arranged on the track center side perpendicular to the track width. The field gradient of a perpendicular magnetic field on the trailing side of the main pole and near both ends of the track is made steep to realize a higher areal recording density as a result.

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Hachioji, Japan

Atsuko Kuroda