Highly oriented longitudinal magnetic media on direct textured glass substrates
    3.
    发明申请
    Highly oriented longitudinal magnetic media on direct textured glass substrates 审中-公开
    高取向纵向磁性介质在直接纹理化玻璃基板上

    公开(公告)号:US20050164038A1

    公开(公告)日:2005-07-28

    申请号:US11030299

    申请日:2005-01-07

    IPC分类号: G11B5/73 B05D5/12 G11B5/64

    摘要: Oriented longitudinal magnetic recording media on direct texture glass or glass-ceramic substrates with a film structure of one or more Ni-containing layer, a Cr-containing underlayer, a Co-containing magnetic layer and carbon overcoat exhibits are capable of achieving Mrt OR of >1.5, preferably >1.85. Such highly oriented glass media shows a significant SNR (>2 dB) and parametric improvement over the counterpart isotropic media with the same film structure on non-textured glass or glass-ceramic substrates.

    摘要翻译: 在具有一个或多个Ni含量层,含Cr底层,含Co磁性层和碳外涂层的膜结构的直接织构玻璃或玻璃陶瓷基板上的定向纵向磁记录介质能够实现 > 1.5,优选> 1.85。 这种高度取向的玻璃介质在非纹理玻璃或玻璃 - 陶瓷衬底上显示出具有相同膜结构的对等各向同性介质的显着SNR(> 2dB)和参数改进。

    Highly oriented longitudinal magnetic media on direct textured glass substrates
    4.
    发明授权
    Highly oriented longitudinal magnetic media on direct textured glass substrates 失效
    高取向纵向磁性介质在直接纹理化玻璃基板上

    公开(公告)号:US06855439B1

    公开(公告)日:2005-02-15

    申请号:US10662427

    申请日:2003-09-16

    IPC分类号: G11B5/73 G11B5/66 G11B5/70

    摘要: Oriented longitudinal magnetic recording media on direct texture glass or glass-ceramic substrate with a film structure of one or more Ni-containing layer, a Cr-containing underlayer, a Co-containing magnetic layer and carbon overcoat exhibits are capable of achieving Mrt OR of >1.5, preferably >1.85. Such highly oriented glass media shows a significant SNR (>2 dB) and parametric improvement over the counterpart isotropic media with the same film structure on non-textured glass or glass-ceramic substrates.

    摘要翻译: 在具有一个或多个含Ni层,含Cr底层,含Co磁性层和碳外涂层的膜结构的直接纹理玻璃或玻璃陶瓷基板上的定向纵向磁记录介质能够实现 > 1.5,优选> 1.85。 这种高度取向的玻璃介质在非纹理玻璃或玻璃 - 陶瓷衬底上显示出具有相同膜结构的对等各向同性介质的显着SNR(> 2dB)和参数改进。

    Magnetic recording media comprising a silicon carbide corrosion barrier layer and a c-overcoat
    5.
    发明授权
    Magnetic recording media comprising a silicon carbide corrosion barrier layer and a c-overcoat 失效
    磁记录介质包括碳化硅腐蚀阻挡层和c覆盖层

    公开(公告)号:US06572958B1

    公开(公告)日:2003-06-03

    申请号:US09621530

    申请日:2000-07-21

    IPC分类号: G11B572

    摘要: A magnetic recording medium is provided with a dual layer protective overcoat system comprising a SiC corrosion barrier layer and a carbon-containing protective overcoat thereon. The SiC layer effectively prevents or significantly reduces Co and Ni diffusion to the medium surface. Embodiments include magnetic recording media comprising a SiC corrosion barrier layer over a magnetic layer, an overlying protective layer of amorphous hydrogenated carbon, amorphous nitrogenated carbon or amorphous hydrogen-nitrogenated carbon, and a lubricant topcoat thereon. Embodiments of the present invention further include magnetic recording media comprising Ni—P plated aluminum, Ni-plated glass or non-conductive substrates including glass, glass-ceramic and ceramic materials. Embodiments of the present invention further include a dual protective overcoat system having a combined thickness less than about 100 Å, such as less than about 75 Å, e.g., less than about 50 Å, with the SiC corrosion barrier layer having a thickness ranging from 1 Å to 40 Å.

    摘要翻译: 磁记录介质设置有双层保护外涂层系统,其包括SiC腐蚀阻挡层和其上的含碳保护外涂层。 SiC层有效地防止或显着减少Co和Ni扩散到介质表面。 实施例包括在磁性层上包含SiC腐蚀阻挡层的磁记录介质,无定形氢化碳的上覆保护层,无定形氮化碳或无定形氢化氮,以及其上的润滑剂面涂层。 本发明的实施例还包括包含Ni-P镀铝,镀Ni玻璃或包括玻璃,玻璃 - 陶瓷和陶瓷材料的非导电衬底的磁记录介质。 本发明的实施方案还包括双重保护外涂层系统,其具有小于约,例如小于约,例如小于约50埃的组合厚度,其中SiC腐蚀阻挡层的厚度范围为1 Å至40Å。

    COMPOSITE PERPENDICULAR MEDIA WITH GRADED ANISOTROPY LAYERS AND EXCHANGE BREAK LAYERS
    8.
    发明申请
    COMPOSITE PERPENDICULAR MEDIA WITH GRADED ANISOTROPY LAYERS AND EXCHANGE BREAK LAYERS 审中-公开
    具有分级的各向异性层和交换层的复合材料

    公开(公告)号:US20110003175A1

    公开(公告)日:2011-01-06

    申请号:US12684070

    申请日:2010-01-07

    IPC分类号: G11B5/33 G11B5/84

    CPC分类号: G11B5/66 G11B5/667

    摘要: A perpendicular magnetic recording layer may include a hard granular layer, an exchange break layer formed on the hard granular layer, and a soft granular layer formed on the exchange break layer. In some embodiments, the exchange break layer may consist essentially of ruthenium. In some embodiments, the perpendicular magnetic recording layer may include n magnetic layers and n−1 exchange break layers, where n is greater than or equal to three, and where the n−1 exchange break layers alternate with the n magnetic layers in the magnetic recording layer.

    摘要翻译: 垂直磁记录层可以包括硬颗粒层,形成在硬颗粒层上的交换破坏层和形成在交换断层上的软颗粒层。 在一些实施方案中,交换断裂层可以基本上由钌组成。 在一些实施例中,垂直磁记录层可以包括n个磁性层和n-1个交换断裂层,其中n大于或等于3个,并且其中n-1个交换断裂层与磁性层中的n个磁性层交替 记录层。