Tdk Corporation

Reiichi Kurumisawa

Norikazu Ota

Susumu Aoki

Yuichi Watabe

Yasuyuki Notsuke

A perpendicular magnetic recording head capable of minimizing the possibility of erasing recorded information without intention at the time of recording information is provided. A pole layer has a structure in which a main pole layer disposed on a leading side and an auxiliary pole layer disposed on a trailing side are laminated. Even if a part of a magnetic flux contained in the auxiliary pole layer is directly emitted from an air bearing surface to outside not via the main pole layer, as the magnetic flux is contained in the magnetic layer, the magnetic flux is not easily emitted from the air bearing surface to the outside directly. Therefore, an unnecessary perpendicular magnetic field is not easily generated by the magnetic flux. Thereby, a recording medium is not easily magnetized again by the unnecessary magnetic field, so information recorded on the recording medium is not easily erased without intention.

Perpendicular magnetic recording head, method of manufacturing the same, and magnetic recording apparatus

The present invention provides a method of manufacturing a thin film magnetic head capable of assuring recording characteristics by determining throat height with high precision. A TH specifying layer is formed so as to extend to a position Pwhile being adjacent to a gap layer, and an auxiliary insulating layer is similarly formed so as to extend from the position Pwhile being adjacent to the gap layer and specify throat height on the basis of the position PAfter that, a main insulating layer is formed so as to cover a thin film coil on the auxiliary insulating layer, and a yoke layer is formed so as to extend while being partially on the TH specifying layer. The throat height is determined accurately and stably on the basis of the position Pby the auxiliary insulating layer.

Growing community of inventors

Tokyo, Japan

Reiichi Kurumisawa