光磁気記録媒体及びその製造方法
    3.
    发明申请
    光磁気記録媒体及びその製造方法 审中-公开
    磁光记录介质及其制造方法

    公开(公告)号:WO2003046905A1

    公开(公告)日:2003-06-05

    申请号:PCT/JP2002/012289

    申请日:2002-11-25

    Abstract: A magneto-optical recording medium including a recording film (10) having a reproduction layer (13), an intermediate layer (14), and a recording layer (15) on an optical disc substrate. The recording film (10) is a magnetic film magnetically connected and having magnetic anisotropy in the direction vertical to the film surface. A recording magnetic domain formed on the recording layer (15) is transferred onto the reproduction layer (13). Recording information is reproduced by movement of the magnetic domain wall. The recording layer (15) has a columnar structure orientated substantially in the vertical direction. Thus, it becomes possible to perform a high-speed reproduction of a signal below the diffraction limit of the light spot for recording/reproducing the information and significantly improve the recording density and the transfer speed. Even when recorded at a high density, it is possible to form a stable recording magnetic domain.

    Abstract translation: 一种磁光记录介质,包括在光盘基片上具有再生层(13),中间层(14)和记录层(15)的记录膜(10)。 记录膜(10)是磁性膜,并且在垂直于膜表面的方向上具有磁各向异性。 形成在记录层(15)上的记录磁畴被转印到再现层(13)上。 通过磁畴壁的移动来再现记录信息。 记录层(15)具有基本在垂直方向上取向的柱状结构。 因此,可以进行低于用于记录/再现信息的光点的衍射极限的信号的高速再现,并且显着提高记录密度和传送速度。 即使以高密度记录,也可形成稳定的记录磁畴。

    光ディスクの膜形成方法
    4.
    发明申请
    光ディスクの膜形成方法 审中-公开
    在光盘上形成薄膜的方法

    公开(公告)号:WO2003036633A1

    公开(公告)日:2003-05-01

    申请号:PCT/JP2002/011038

    申请日:2002-10-24

    Abstract: A method of forming a film on an optical disk comprising (a) the step of carrying an optical disk substrate into a vacuum chamber, (b) the step of disposing the optical disk substrate to face a target provided in the vacuum chamber and including a film−forming material, and (c) the step of forming a specified film on a fixed or rotating−on−axis or revolving optical disk substrate by a sputtering method using the target, wherein a relation a > 2D is satisfied where a is a target radius and D the radius of the optical disk substrate, thereby forming a higher−density−compatible, homogeneous film on an optical disk.

    Abstract translation: 一种在光盘上形成膜的方法,包括:(a)将光盘基板搬入真空室的步骤,(b)将光盘基板设置在与设在真空室中的目标相对的步骤, 成膜材料,以及(c)通过使用该靶的溅射法在固定或旋转轴上或旋转光盘基板上形成规定膜的步骤,其中满足关系a> 2D,其中a为 目标半径和D是光盘基板的半径,从而在光盘上形成更高密度的均匀的膜。

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