Title :
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
fDate :
11/1/1993 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
