| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a magneto-optical recording medium of a magnetic domain expansion system in which the jitter of the reproduced signal is reduced to improve the signal to noise ratio (S/N) of the reproduced signal by smoothing the expansion of a magnetic domain transferred from a recording layer to a reproduction layer and to provide a method for manufacturing a magneto-optical recording medium. <P>SOLUTION: In forming the reproducing layer of the magneto-optical recording medium of the magnetic domain expansion system, the composition ratio of a transition metal in a reproducing light incident side surface of the reproducing layer is made higher than a composition ratio of a transition metal in a surface on a side opposite to the reproducing light incident side. This makes a difference in the magnitude of magnetization between the reproducing light incident side surface of the reproducing layer and the surface on the side opposite to the reproducing light incident side small in information reproduction, smoothes an expansion operation of the magnetic domain and reduces jitter of the reproduced signal to improve the S/N of the reproduced signal. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
