Hitachi Global Storage Technologies Netherlands B.v.

Hgst Netherlands, B.v.

Prabodh Ratnaparkhi

Vladimir Nikitin

Ming Jiang

Wen-Chien David Hsiao

Aron Pentek

Edward Hin Pong Lee

Yi Zheng

Yimin Hsu

Sue Siyang Zhang

Hung-Chin Guthrie

Ning Shi

Yinshi Liu

A magnetic write head for perpendicular magnetic data recording. The write head includes a substrate and a magnetic write pole formed on the substrate, the write pole having a trailing edge and first and second sides. A magnetic stitched pole is formed over a portion of the magnetic write pole, the stitched pole having a front edge that defines a secondary flare point. First and second non-magnetic side walls are formed at the first and second sides of the write pole. The non-magnetic side walls extend from the substrate at least to the trailing edge of the write pole in a first region near an air bearing surface and wherein the first and second non-magnetic side walls extend from the substrate to a point between the substrate and the trailing edge, allowing the stitched magnetic pole to extend partially over the sides of the write pole.

Perpendicular magnetic write head having a novel shield structure

A method for manufacturing a magnetic write head for perpendicular magnetic recording. The method includes forming a write pole, and then depositing a refill layer. A mask structure can be formed over the writ pole and refill layer, the mask structure being configured to define a stitched pole. An ion milling or reactive ion milling can then be performed to remove portions of the refill layer that are not protected by the mask structure. Then a magnetic material can be deposited to form a stitched write pole that defines a secondary flare point. The stitched pole can also be self aligned with an electrical lapping guide in order to accurately locate the front edge of the secondary flare point relative to the air bearing surface of the write head.

Method for manufacturing a perpendicular magnetic write head

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San Jose, CA, United States of America

Prabodh Ratnaparkhi