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    • 3. 发明申请
    • Magnetooptic recording medium and method for producing the same
    • 磁光记录介质及其制造方法
    • US20050226136A1
    • 2005-10-13
    • US11126090
    • 2005-05-10
    • Mineo MoribeTakahiro UmadaKeiji Shono
    • Mineo MoribeTakahiro UmadaKeiji Shono
    • G11B11/105G11B7/24
    • G11B11/10591
    • A magneto-optical recording medium (D1) includes a soft magnetic layer (2) and a magneto-optical recording layer (3) laminated sequentially onto a substrate (1) and is provided with a plurality of grooves (G) and lands (L). The product of the saturation magnetic flux density and thickness of the soft magnetic layer (2) is made different for the respective grooves (G) and lands (L). Thus, with respect to each groove (G) and each land (L), the magnetic focusing effect can be enhanced for one of these with a greater product of saturation magnetic flux density and thickness of the soft magnetic layer (2), while the effect can be weakened for the other one with a smaller product of saturation magnetic flux density and thickness of the soft magnetic layer. This enables the incidence of cross-writing to be suppressed.
    • 磁光记录介质(D 1)包括顺序层叠在基板(1)上的软磁性层(2)和磁光记录层(3),并且设置有多个凹槽(G)和焊盘 L)。 对于各个沟槽(G)和焊盘(L),使软磁性层(2)的饱和磁通密度和厚度的乘积不同。 因此,对于每个沟槽(G)和每个焊盘(L),可以提高其中的一个具有更大的饱和磁通密度乘积和软磁层(2)的厚度的磁聚焦效应,而 对于另一个具有较小的饱和磁通密度乘积和软磁层厚度的效果可以减弱。 这使得能够抑制交叉写入的发生。