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    Magnetic recording media with a surface-oxidized nial sub-seedlayer
    4.
    发明授权
    Magnetic recording media with a surface-oxidized nial sub-seedlayer 失效
    具有表面氧化的Nial子种子层的磁记录介质

    公开(公告)号：US06348276B1

    公开(公告)日：2002-02-19

    申请号：US09382581

    申请日：1999-08-25

    申请人： Qixu Chen ,  Zhong Wu ,  Samuel Dacke Harkness, IV ,  Charles Leu ,  Rajiv Yadav Ranjan

    发明人： Qixu Chen ,  Zhong Wu ,  Samuel Dacke Harkness, IV ,  Charles Leu ,  Rajiv Yadav Ranjan

    IPC分类号： G11B566

    CPC分类号： G11B5/732 ,  C23C14/025 ,  G11B5/66 ,  G11B5/7325 ,  G11B5/8404

    摘要： Magnetic recording media with high coercivity and low noise, suitable for high density longitudinal recording, are formed with a surface oxidized sub-seedlayer between a non-magnetic substrate and seedlayer. Embodiments include depositing a NiAl sub-seedlayer on a glass or glass-ceramic substrate, oxidizing the surface of the NiAl sub-seedlayer, and then sequentially depositing a NiAl seedlayer, Cr or Cr alloy underlayer, e.g., CrMo, an optional intermediate CoCrTa alloy layer, a magnetic layer, e.g., a Co-alloy magnetic layer, and a protective overcoat, e.g., a carbon-containing protective overcoat.

    摘要翻译： 在非磁性基材和籽晶层之间形成表面氧化亚子层，适用于高密度纵向记录的具有高矫顽力和低噪声的磁记录介质。 实施例包括在玻璃或玻璃陶瓷基片上沉积NiAl亚子层，氧化NiAl亚子层的表面，然后依次沉积NiAl种子层，Cr或Cr合金底层，例如CrMo，任选的中间CoCrTa合金 层，磁性层，例如Co合金磁性层和保护性外涂层，例如含碳保护性外涂层。

    PERPENDICULAR MEDIA WITH REDUCED SIDE TRACK ERASURE
    6.
    发明申请
    PERPENDICULAR MEDIA WITH REDUCED SIDE TRACK ERASURE 有权
    具有减少侧面跟踪的PERPENDICULAR MEDIA

    公开(公告)号：US20100177439A1

    公开(公告)日：2010-07-15

    申请号：US12353229

    申请日：2009-01-13

    申请人： Kaizhong Gao ,  Qixu Chen ,  Chung-Hee Chang ,  Thomas Patrick Nolan

    发明人： Kaizhong Gao ,  Qixu Chen ,  Chung-Hee Chang ,  Thomas Patrick Nolan

    IPC分类号： G11B5/82

    CPC分类号： G11B5/82 ,  G11B5/667

    摘要： A media for perpendicular recording and a method of creating the media is provided. The media includes a hard recording layer and a soft underlayer (SUL). The SUL is composed of at least two anti-ferromagnetically coupled (AFC) sub-underlayers. The sub-underlayers respond to a magnetic field established during dynamic reversal with respective magnetic fields. The sub-underlayers are formed and disposed to differ in one or more magnetic moment, anisotropy, and thickness, so that their respective magnetic fields constructively interfere in one or more points in the hard recording layer, thereby reducing a total SUL magnetic field response to the dynamic reversal field approximately to zero at one or more points in the hard recording layer, which reduces side track erasure.

    摘要翻译： 提供了用于垂直记录的介质和创建介质的方法。 介质包括硬记录层和软底层（SUL）。 SUL由至少两个反铁磁耦​​合（AFC）子底层组成。 副底层响应于用相应的磁场在动态反转期间建立的磁场。 亚底层被形成和设置为在一个或多个磁矩，各向异性和厚度上不同，使得它们各自的磁场建构性地干扰硬记录层中的一个或多个点，从而减少总SUL磁场响应 在硬记录层中的一个或多个点处的动态反转场大致为零，这减少了侧轨道擦除。

    Recording layer and multilayered soft underlayer
    7.
    发明授权
    Recording layer and multilayered soft underlayer 有权
    记录层和多层软底层

    公开(公告)号：US08338005B2

    公开(公告)日：2012-12-25

    申请号：US12353229

    申请日：2009-01-13

    申请人： Kaizhong Gao ,  Qixu Chen ,  Chung-Hee Chang ,  Thomas Patrick Nolan

    发明人： Kaizhong Gao ,  Qixu Chen ,  Chung-Hee Chang ,  Thomas Patrick Nolan

    IPC分类号： G11B5/667

    CPC分类号： G11B5/82 ,  G11B5/667

    摘要： A media for perpendicular recording and a method of creating the media is provided. The media includes a hard recording layer and a soft underlayer (SUL). The SUL is composed of at least two anti-ferromagnetically coupled (AFC) sub-underlayers. The sub-underlayers respond to a magnetic field established during dynamic reversal with respective magnetic fields. The sub-underlayers are formed and disposed to differ in one or more magnetic moment, anisotropy, and thickness, so that their respective magnetic fields constructively interfere in one or more points in the hard recording layer, thereby reducing a total SUL magnetic field response to the dynamic reversal field approximately to zero at one or more points in the hard recording layer, which reduces side track erasure.

    摘要翻译： 提供了用于垂直记录的介质和创建介质的方法。 介质包括硬记录层和软底层（SUL）。 SUL由至少两个反铁磁耦​​合（AFC）子底层组成。 副底层响应于用相应的磁场在动态反转期间建立的磁场。 亚底层被形成和设置为在一个或多个磁矩，各向异性和厚度上不同，使得它们各自的磁场在硬记录层中的一个或多个点上建构性地干扰，从而减少总SUL磁场响应 在硬记录层中的一个或多个点处的动态反转场大致为零，这减少了侧轨道擦除。

    Highly oriented perpendicular magnetic recording media
    9.
    发明授权
    Highly oriented perpendicular magnetic recording media 有权
    高取向垂直磁记录介质

    公开(公告)号：US07247396B2

    公开(公告)日：2007-07-24

    申请号：US10764602

    申请日：2004-01-27

    申请人： Thomas Patrick Nolan ,  Erol Girt ,  Chunghee Chang ,  Qixu Chen ,  Li-Lien Lee

    发明人： Thomas Patrick Nolan ,  Erol Girt ,  Chunghee Chang ,  Qixu Chen ,  Li-Lien Lee

    IPC分类号： G11B5/738

    CPC分类号： G11B5/667 ,  G11B5/656 ,  G11B5/7325 ,  Y10T428/12778 ,  Y10T428/12812 ,  Y10T428/12833 ,  Y10T428/12868 ,  Y10T428/12875 ,  Y10T428/12882 ,  Y10T428/12889 ,  Y10T428/12896 ,  Y10T428/12903 ,  Y10T428/1291 ,  Y10T428/12917 ,  Y10T428/24942 ,  Y10T428/265

    摘要： A perpendicular magnetic recording medium including an interlayer structure for crystallographically orienting a layer of a hexagonal close-packed (hcp) perpendicular magnetic recording material formed thereon, comprising in overlying sequence from a surface of a magnetically soft underlayer: (1) a first crystalline layer of a material having a first lattice parameter and a strong preferred growth orientation; (2) a second crystalline layer of a material having a second lattice parameter and the same strong preferred growth orientation as the first crystalline layer; and (3) a third crystalline layer of an hcp material, having a [0002] lattice parameter similar to or different from that of the second lattice parameter of the second crystalline layer and a strong preferred growth orientation, wherein: the second crystalline layer has a lower interfacial energy with the first crystalline layer and a higher interfacial energy with the third crystalline layer, owing to a lower surface energy of the first crystalline layer and a higher surface energy of the second crystalline layer.

    摘要翻译： 一种垂直磁记录介质，包括用于晶体取向形成在其上的六方密堆积（hcp）垂直磁记录材料的层的层间结构，其包括从软磁性底层的表面起的顺序：（1）第一结晶层 具有第一晶格参数和强优选生长方向的材料; （2）具有第二晶格参数并且与第一晶体层相同的强优选生长取向的材料的第二晶体层; 和（3）hcp材料的第三晶体层，其具有与第二晶体层的第二晶格参数相似或不同的[0002]晶格参数和强的优选生长方向，其中：第二 由于第一晶体层的较低的表面能和第二晶体层的更高的表面能，结晶层与第一结晶层具有较低的界面能和与第三晶体层的较高的界面能。