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31 条记录 (耗时 0.011 秒)

    Perpendicular magnetic recording media with improved crystallographic orientations and method of manufacturing same
    1.
    发明授权
    Perpendicular magnetic recording media with improved crystallographic orientations and method of manufacturing same 有权
    具有改善晶体取向的垂直磁记录介质及其制造方法

    公开(公告)号：US07175925B2

    公开(公告)日：2007-02-13

    申请号：US10663670

    申请日：2003-09-17

    申请人： Qixu David Chen ,  Thomas P. Nolan ,  Zhong Stella Wu ,  Samuel Dacke Harkness, IV ,  Rajiv Yadav Ranjan

    发明人： Qixu David Chen ,  Thomas P. Nolan ,  Zhong Stella Wu ,  Samuel Dacke Harkness, IV ,  Rajiv Yadav Ranjan

    IPC分类号： G11B5/66 ,  G11B5/70

    CPC分类号： G11B5/732 ,  G11B5/667 ,  G11B2005/0029

    摘要： A perpendicular magnetic recording medium, comprising: (a) a non-magnetic substrate having a surface; and (b) a layer stack formed over the substrate surface, comprising in overlying sequence from the substrate surface: (i) a magnetically soft underlayer; (ii) an interlayer structure for crystallographically orienting a layer of a perpendicular magnetic recording material formed thereon; and (iii) at least one crystallographically oriented magnetically hard perpendicular recording layer; wherein the magnetically soft underlayer is sputter-deposited at a sufficiently large target-to-substrate spacing and at a sufficiently low gas pressure selected to provide the underlayer with a smooth surface having a low average surface roughness Ra below about 0.3 nm, as measured by Atomic Force Microscopy (AFM).

    摘要翻译： 一种垂直磁记录介质，包括：（a）具有表面的非磁性基板; 和（b）形成在所述衬底表面上的层叠层，包括从所述衬底表面的重叠顺序：（i）磁软底层; （ii）用于晶体取向形成在其上的垂直磁记录材料层的层间结构; 和（iii）至少一个晶体取向的磁性硬垂直记录层; 其中所述磁软底层被溅射沉积在足够大的靶对衬底间隔处并且以足够低的气体压力被选择以使底层具有平均表面，其具有低于约0.3nm的低平均表面粗糙度Ra，如通过 原子力显微镜（AFM）。

    Perpendicular media with improved corrosion performance
    2.
    发明授权
    Perpendicular media with improved corrosion performance 失效
    垂直介质具有改善的腐蚀性能

    公开(公告)号：US07105240B2

    公开(公告)日：2006-09-12

    申请号：US10742100

    申请日：2003-12-19

    申请人： Zhong (Stella) Wu ,  Raj Nagappan Thangaraj ,  Samuel Dacke Harkness

    发明人： Zhong (Stella) Wu ,  Raj Nagappan Thangaraj ,  Samuel Dacke Harkness

    IPC分类号： G11B5/66 ,  G11B5/70

    CPC分类号： G11B5/7325 ,  G11B5/656 ,  G11B5/72 ,  G11B5/851

    摘要： A perpendicular recording medium having a magnetic layer comprising cobalt, platinum, and at least one of molybdenum and chromium. In a preferred embodiment, the perpendicular recording medium comprises granular magnetic regions having oxygen-containing grain boundaries. The magnetic layer of the present invention preferably exhibits improved corrosion resistance while maintaining the magnetic properties suitable for high density perpendicular recording.

    摘要翻译： 一种具有磁性层的垂直记录介质，包括钴，铂以及钼和铬中的至少一种。 在优选实施例中，垂直记录介质包括具有含氧晶界的粒状磁区。 本发明的磁性层优选具有改进的耐腐蚀性，同时保持适合于高密度垂直记录的磁特性。

    Magnetic recording media with a nialox sub-seedlayer
    4.
    发明授权
    Magnetic recording media with a nialox sub-seedlayer 失效
    具有nialox子种子层的磁记录介质

    公开(公告)号：US06346339B1

    公开(公告)日：2002-02-12

    申请号：US09379505

    申请日：1999-08-23

    申请人： Samuel Dacke Harkness, IV ,  Qixu (David) Chen ,  Zhong (Stella) Wu ,  Rajiv Yadav Ranjan

    发明人： Samuel Dacke Harkness, IV ,  Qixu (David) Chen ,  Zhong (Stella) Wu ,  Rajiv Yadav Ranjan

    IPC分类号： G11B566

    CPC分类号： G11B5/732 ,  C23C14/024 ,  G11B5/656 ,  G11B5/66 ,  G11B5/7325 ,  G11B5/8404

    摘要： Magnetic recording media exhibiting enhanced SMNR are formed with an NiAlOx sub-seedlayer for microstructural control of the underlayer to enable deposition and growth of a magnetic layer exhibiting a (10{overscore (1)}0)-predominant crystallographic orientation and small, uniform grain size. Embodiments include completely reactive sputter depositing a NiAlOx sub-seedlayer on a glass-ceramic substrate and sequentially depositing thereon a NiAl seedlayer, a Cr or Cr-alloy underlayer, e.g., CrMo, a Co—Cr magnetic layer and a protective overcoat, e.g., carbon. The resulting magnetic recording media exhibit a high SMNR, high OW, narrow PW50, improved jitter and improved Hr.

    摘要翻译： 用NiAlOx亚子层形成表现出增强的SMNR的磁记录介质，用于底层的微结构控制，以使得能够沉积和生长表现出（10（超核（1）} 0） - 优势晶体取向的磁性层和小的均匀晶粒 尺寸。 实施例包括在玻璃 - 陶瓷衬底上完全反应性溅射沉积NiAlO x子种子层并且依次在其上沉积NiAl种子层，Cr或Cr-合金底层，例如CrMo，Co-Cr磁性层和保护性外涂层， 碳。 所得到的磁记录介质表现出高SMNR，高OW，窄PW50，改善的抖动和改善的Hr。

    Magnetic recording medium containing a Cr(Ta205) underlayer
    5.
    发明授权
    Magnetic recording medium containing a Cr(Ta205) underlayer 失效
    含有Cr（Ta205）底层的磁记录介质

    公开(公告)号：US06238809B1

    公开(公告)日：2001-05-29

    申请号：US09160579

    申请日：1998-09-25

    申请人： Zhong Stella Wu ,  Rajiv Y. Ranjan

    发明人： Zhong Stella Wu ,  Rajiv Y. Ranjan

    IPC分类号： G11B566

    CPC分类号： G11B5/7325 ,  G11B5/66 ,  Y10S428/90 ,  Y10T428/265

    摘要： The Hr and SNR of a magnetic recording medium are increased and reduced recording signal modulation by employing an underlayer containing Cr or a Cr alloy with Ta2O5 dispersed therein. Embodiments include a composite underlayer comprising a first Cr or Cr alloy underlayer containing about 0.1 to about 10 at. % dispersed Ta2O5 and a second underlayer comprising Cr or a Cr alloy, e.g. CrV, thereon.

    摘要翻译： 磁记录介质的Hr和SNR通过使用含有分散有Ta 2 O 5的Cr或Cr合金的底层来增加记录信号调制并降低记录信号调制。 实施方案包括复合底层，其包含含有约0.1至约10原子的第一Cr或Cr合金底层。 ％分散的Ta 2 O 5和包含Cr或Cr合金的第二底层，例如。 CrV，其上。

    Oxidized conformal capping layer
    6.
    发明授权
    Oxidized conformal capping layer 有权
    氧化保形盖层

    公开(公告)号：US08043734B2

    公开(公告)日：2011-10-25

    申请号：US12178540

    申请日：2008-07-23

    申请人： Samuel Dacke Harkness, IV ,  Zhong Stella Wu

    发明人： Samuel Dacke Harkness, IV ,  Zhong Stella Wu

    IPC分类号： G11B5/66

    CPC分类号： G11B5/72 ,  G11B5/8408

    摘要： The invention relates to granular perpendicular magnetic recording media with a capping layer comprised of a material having high surface mobility and low surface energy. The capping layer surface is oxidized to produce a passivating surface that is impervious to corrosion.

    摘要翻译： 本发明涉及具有由具有高表面迁移率和低表面能的材料构成的覆盖层的颗粒状垂直磁记录介质。 覆盖层表面被氧化以产生不易腐蚀的钝化表面。