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    • 4. 发明申请
    • Recording layer of magneto-optical storage medium having sublayer and method of fabricating the same
    • 具有子层的磁光存储介质的记录层及其制造方法
    • US20070054152A1
    • 2007-03-08
    • US11592849
    • 2006-11-03
    • Dong SuhHo RyuYeung SohnYong Park
    • Dong SuhHo RyuYeung SohnYong Park
    • G11B5/66G11B5/65
    • G11B11/10584G11B11/10586
    • A recording layer of a magneto-optical storage medium having a sublayer in accordance with the present invention comprises a recording layer on which information is recorded and stored; and a sublayer formed above or below the recording layer and made up of an alloy containing a transition metal, wherein a magnetic anisotropy energy of the sublayer is exchange-coupled to the recording layer, thereby enhancing a coercive force of the recording layer. The sublayer may be formed in a single-layered structure having one layer, or in a multi-layered structure having a plurality of layers. The sublayer is preferably made up of an alloy containing a transition metal used for the recording layer. According to the present invention, the coercive force of the recording layer can be increased by an exchange coupling effect between the recording layer and its adjacent sublayer, and thus, the stability of the magnetic domain in the recording layer can be improved. Therefore, the size of the magnetic domain can be significantly reduced, and the density of recording can be increased.
    • 根据本发明的具有子层的磁光存储介质的记录层包括记录和存储信息的记录层; 以及形成在记录层的上方或下方并由含有过渡金属的合金构成的子层,其中子层的磁各向异性能量与记录层交换耦合,从而提高记录层的矫顽力。 子层可以形成为具有一层的单层结构,或者具有多层的多层结构。 子层优选由含有用于记录层的过渡金属的合金构成。 根据本发明,可以通过记录层及其相邻子层之间的交换耦合效应来提高记录层的矫顽力,从而可以提高记录层中磁畴的稳定性。 因此,可以显着地减小磁畴的尺寸,并且能够提高记录密度。