Thin film magnetic head, manufacturing method thereof and magnetic storage

1. Field of the Invention A thin film magnetic head includes a recording pole layer that is divided into a tip portion, a wide rear portion, a flare portion, and a yoke portion as viewed from the air bearing surface (ABS). The tip portion and the wide rear portion directly contact a write gap layer....

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Main Authors Nonaka, Yoshihiro, Urai, Haruo, Ishiwata, Nobuyuki, Shimabayashi, Kiyotaka, Suzuki, Tetsuhiro, Saitho, Shinsaku, Tachibana, Hiroaki, Toba, Tamaki
Format Patent
LanguageEnglish
Published 12.10.2004
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Summary:1. Field of the Invention A thin film magnetic head includes a recording pole layer that is divided into a tip portion, a wide rear portion, a flare portion, and a yoke portion as viewed from the air bearing surface (ABS). The tip portion and the wide rear portion directly contact a write gap layer. Part of the wide rear portion has a greater width that the tip portion. The wide rear portion is provided between the tip portion and the flare portion to reduce magnetic reluctance. Accordingly, it is possible to improve the pattern accuracy of the tip portion width by providing the flare portion, which reflects a large quantity of light, far from the ABS, while preventing an increase of the magnetic reluctance.