Title :
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
fDate :
7/1/1998 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
