Magneto-optical media suitable for short wavelength reading

Author

Miyazawa, Hiromu ; Ide, Tsugio ; Hoshina, Syoji ; Ichikawa, Masaaki ; Nebashi, Satoshi ; Shimoda, Tatsuya

Author_Institution

Seiko Epson Corp., Nagano, Japan

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

3781

Lastpage

3783

Abstract

A complex magnetic multilayer, in which a layer with a high Kerr rotation angle was sandwiched by layers with a large coercivity, is described. This multilayer is thin enough (~200 Å) to realize the reflective type structure to enhance the Kerr rotation angle and to obtain a high C/N in a wavelength of 532 nm. It is found that it has a reasonable reliability under a severe condition. This magnetic multilayer demonstrates higher recording sensitivity compared with a conventional magnetic single layer

Keywords

Kerr magneto-optical effect; coercive force; magnetic multilayers; magneto-optical recording; 200 angstrom; 532 nm; CNR; NdDyTbFeCo-NdTbFeCo-NdDyTbFeCo; complex magnetic multilayer; exchange coupled sandwiched films; high Kerr rotation angle; large coercivity; magneto-optical media; recording sensitivity; reflective type structure; short wavelength reading; Coercive force; Dielectric substrates; Dielectric thin films; Magnetic films; Magnetic materials; Magnetic properties; Magnetooptic recording; Neodymium; Optical films; Sputtering;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.281298

Filename

281298