Newly developed wraparound-shielded head for perpendicular recording

Author

Okada, Tomohiro ; Nunokawa, Isao ; Mochizuki, Masafumi ; Hatatani, Masashiko ; Kimura, Hisashi ; Etoh, Kimitoshi ; Fuyama, Moriaki ; Nakamoto, Kazuhiro

Author_Institution

Central Res. Lab., Hitachi Ltd., Kanagawa, Japan

Volume

41

Issue

10

fYear

2005

Firstpage

2899

Lastpage

2901

Abstract

We describe a fabrication process for a wraparound shield for perpendicular recording heads. We successfully made a wraparound shield on a main pole using this process. A wraparound-shielded head improved the resolution, and the byte error rate is lower compared to a single-pole head because the wraparound shield increased the gradient of the magnetic field from the main pole. Measurements in the cross-track direction showed that the wraparound shield improved the magnetic field profile at near the bottom of the profile.

Keywords

magnetic fields; magnetic heads; perpendicular magnetic recording; byte error rate; cross-track direction; magnetic field; magnetic head; main pole; perpendicular magnetic recording; shielded head; single-pole head; Fabrication; Flowcharts; Magnetic field measurement; Magnetic heads; Magnetic shielding; Perpendicular magnetic recording; Research and development; Resists; Scanning electron microscopy; Transmission electron microscopy; Magnetic head; main pole; perpendicular magnetic recording; shielded head;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2005.855310

Filename

1519155