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