Title :
Domain expansion readout system with DC magnetic field
Author :
Yamaguchi, Atsushi ; Ishida, Hiroki ; Noguchi, Hitoshi ; Mitani, Kenichiro ; Takagi, Naoyuki ; Kume, Minoru
fDate :
7/1/2001 12:00:00 AM
Abstract :
MAMMOS (Magnetic Amplifying Magneto Optical System) is a technique for realizing high-density magneto-optical disk. Conventional MAMMOS readout process needs AC magnetic field for expanding and erasing magnetic domains. As a new readout system, MAMMOS readout that needs only DC magnetic field using RE (Rare-Earth)-rich GdFeCo readout layer was developed. This method exhibited a high readout resolution in spite of an AC field-free method
Keywords :
cobalt alloys; ferromagnetic materials; gadolinium alloys; iron alloys; magnetic domains; magnetic multilayers; magneto-optical recording; AC field-free method; DC magnetic field; GdFeCo; MAMMOS; domain expansion readout system; high-density magneto-optical disk; magnetic amplifying magneto optical system; rare-earth-rich GdFeCo readout layer; readout resolution; Land surface temperature; Magnetic domains; Magnetic fields; Magnetic moments; Magnetic recording; Optical noise; Perpendicular magnetic recording; Pump lasers; Signal resolution; Silicon compounds;
Journal_Title :
Magnetics, IEEE Transactions on
