Development of high density perpendicular magnetic recording system using a probe head of sharpened optical fiber

Author

Nakagawa, Shigeki ; Hiraide, Kazunari ; Naoe, Masahiko

Author_Institution

Dept. of Phys. Electron., Tokyo Inst. of Technol., Japan

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

3130

Lastpage

3132

Abstract

A new type of single pole head for both reading and writing using an extremely sharpened optical fiber probe is proposed for perpendicular magnetic recording to attain ultra high areal density. For the writing head, the head field distribution was calculated by means of a finite integration element (FIM) method and it was shown that the field from head tip to the recording layer was successfully increased up to 4.8 kOe by attaching a ferrite-return-pass around the writing head probe. For a read-out head, the calculation of the magnetic transcription from the recording layer to the head tip indicated that magnetic transcription could be obtained up to 270 kfrpi

Keywords

fibre optic sensors; finite element analysis; integration; magneto-optical recording; perpendicular magnetic recording; ferrite-return-pass; finite integration element method; head field distribution; high density perpendicular magnetic recording; magnetic transcription; magnetooptical recording; probe head; reading head; sharpened optical fiber; single pole head; ultra high areal density; writing head; Amorphous magnetic materials; Magnetic domains; Magnetic flux; Magnetic heads; Optical fiber polarization; Optical fibers; Optical recording; Perpendicular magnetic recording; Probes; Writing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.801104

Filename

801104