Magnetic field modulation recording on Pt/Co magneto-optical disks

Author

Teragaki, Yasuko ; Kusumoto, Yasuyuki ; Sumi, Satoshi ; Torazawa, Kenji ; Tsunashima, Shigeru ; Uchiyama, Susumu

Author_Institution

Sanyo Electric Co. Ltd., Gifu, Japan

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

3796

Lastpage

3798

Abstract

Recording properties have been investigated for a magnetooptical disk made of Pt/Co multilayers. The disk exhibits good recording properties for both light intensity modulation and field modulation methods. Reasonable recording properties, namely a carrier-to-noise ratio (CNR) of 46 dB and a block error rate of 1.9%, have been obtained for the field modulation method which seems to satisfy usual standards. However, in the case of low modulation fields, the Pt/Co disk exhibits lower CNR than conventional disks made of rare earth-transition metal amorphous films because of lower recording carrier

Keywords

cobalt; magnetic multilayers; magneto-optical recording; noise; platinum; CNR; Pt-Co multilayers; block error rate; carrier-to-noise ratio; magnetic field modulation recording; magnetooptical disk; rare earth-transition metal amorphous films; recording carrier; recording properties; standards; Amorphous materials; Disk recording; Error analysis; Intensity modulation; Magnetic fields; Magnetic modulators; Magnetic multilayers; Magnetic properties; Magnetooptic recording; Optical modulation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.281303

Filename

281303