Fabrication of head-flyable nanohole patterned media and dynamic write/read measurement with GMR head

Author

Kikuchi, H. ; Nakao, H. ; Yasui, K. ; Nishio, K. ; Morikawa, T. ; Matsumoto, K. ; Masuda, H. ; Itoh, K.

Author_Institution

Yamagata Fujitsu Ltd, Higashine, Japan

Volume

41

Issue

10

fYear

2005

Firstpage

3226

Lastpage

3228

Abstract

Fabrication of alumina nanohole media and write/read experiments using a merge-type GMR head on such patterned media were studied. By optimizing the conditions for anodization, electrodeposition and surface polishing, we have succeeded in measuring the write/read characteristics. The Cobalt filled nanohole media with a pitch of 63 nm and an aspect ratio of 6.3 showed a D50 of 200 kFCI. Detailed analysis showed that the microscopic waveform seems to have a dependence on the nanohole array location.

Keywords

anodisation; electrodeposition; giant magnetoresistance; magnetic heads; optimisation; perpendicular magnetic recording; polishing; 63 nm; GMR head; alumina nanohole media; anodization; anodized alumina nanohole; aspect ratio; cobalt filled nanohole media; dynamic write/read measurement; electrodeposition; giant magnetoresistive head; head-flyable nanohole; microscopic waveform; nanohole array location; patterned media; perpendicular magnetic recording; surface polishing; write/read characteristic; Atomic force microscopy; Cobalt; Fabrication; Laboratories; Magnetic heads; Magnetic separation; Perpendicular magnetic recording; Rough surfaces; Scanning electron microscopy; Surface roughness; Anodized alumina nanohole; patterned media; perpendicular magnetic recording;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2005.854776

Filename

1519261