New magnetic domain expansion MO phenomena using an in-plane magnetizing layer

Author

Shimazaki, K. ; Watanabe, H. ; Yoshihiro, M. ; Takao, H. ; Awano, H. ; Ohnuki, S. ; Ohta, N. ; Xiao, Y. ; Rao, K.V.

Author_Institution

Recording Media Res. Lab., Hitachi Maxell Ltd., Ibaraki, Japan

Volume

34

Issue

4

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

2009

Lastpage

2011

Abstract

For higher density MO recording, a magnetic domain expansion readout method named MAMMOS has been proposed. Herein we report a novel MAMMOS scheme using an in-plane to perpendicular magnetization changing effect. Expansion readout has been achieved by both a magnetic field modulation method and a light intensity modulation method. A clearly amplified readout signal was reproduced from repetition of 0.2 μm packed marks

Keywords

magnetic domains; magneto-optical modulation; magneto-optical recording; 0.2 micron; MAMMOS scheme; aperture movement model; double mask condition; high density magneto-optical recording; in-plane magnetizing layer; in-plane to perpendicular magnetization change; light intensity modulation method; magnetic domain expansion readout method; magnetic field modulation method; Disk recording; Intensity modulation; Magnetic domains; Magnetic fields; Magnetic modulators; Magnetic recording; Optical modulation; Optical recording; Perpendicular magnetic recording; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.706773

Filename

706773