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    Corrosion resistant magnetic thin film media
    1.
    发明授权
    Corrosion resistant magnetic thin film media 失效
    耐腐蚀磁性薄膜介质

    公开(公告)号：US06589676B1

    公开(公告)日：2003-07-08

    申请号：US09902600

    申请日：2001-07-12

    申请人： Jing Gui ,  Raj Thangaraj ,  Roger Alan Ristau ,  Samuel Dacke Harkness, IV ,  Gary Clark Rauch

    发明人： Jing Gui ,  Raj Thangaraj ,  Roger Alan Ristau ,  Samuel Dacke Harkness, IV ,  Gary Clark Rauch

    IPC分类号： G11B566

    CPC分类号： C23C14/165 ,  G11B5/66 ,  G11B5/72 ,  G11B5/851 ,  G11B5/855 ,  Y10S428/90 ,  Y10T428/24975 ,  Y10T428/265

    摘要： Corrosion resistant magnetic thin film media are fabricated using a CoCr magnetic layer having a stabilized protective chromium oxide film thereon. Stabilization of the protective chromium oxide film is achieved by incorporating a stabilizing element, such as Mo, V, Mn, Nb, Ni or Si, in the magnetic layer, thereby enabling elimination of the protective overcoat, e.g., C-containing protective overcoat, or forming the protective overcoat at a significantly low thickness of less than about 20 Å, e.g., up to about 1 Å. Embodiments include forming a magnetic layer comprising Co and Cr on an underlayer, and then forming a thin magnetic layer containing Co and Cr with the chromium oxide stabilizing element thereon. Embodiments further include introducing the chromium oxide stabilizing element by diffusion or ion implantation into a sputter deposited Co—Cr magnetic alloy layer.

    摘要翻译： 使用其上具有稳定的保护性氧化铬膜的CoCr磁性层制造耐腐蚀磁性薄膜介质。 保护性氧化铬膜的稳定化是通过在磁性层中并入稳定元素如Mo，V，Mn，Nb，Ni或Si而实现的，由此能够消除保护性外涂层，例如含C的保护性外涂层， 或形成保护性外涂层，其厚度小于约20埃，例如至多约。 实施例包括在底层上形成包含Co和Cr的磁性层，然后在其上形成含有Co和Cr的薄的磁性层与氧化铬稳定元件。 实施例还包括通过扩散或离子注入将氧化铬稳定化元件引入溅射沉积的Co-Cr磁性合金层。

    Granular perpendicular magnetic recording media with improved corrosion resistance by SUL post-deposition heating
    2.
    发明申请
    Granular perpendicular magnetic recording media with improved corrosion resistance by SUL post-deposition heating 审中-公开
    颗粒垂直磁记录介质通过SUL后沉积加热具有改善的耐腐蚀性

    公开(公告)号：US20080170329A1

    公开(公告)日：2008-07-17

    申请号：US11651964

    申请日：2007-01-11

    申请人： Raj Thangaraj ,  Huan Tang ,  Jing Gui ,  John Wang ,  Tommy T. Cheung

    发明人： Raj Thangaraj ,  Huan Tang ,  Jing Gui ,  John Wang ,  Tommy T. Cheung

    IPC分类号： G11B5/74

    CPC分类号： G11B5/667 ,  G11B5/656 ,  G11B5/7325 ,  G11B5/7379 ,  G11B5/8404

    摘要： A method of manufacturing a granular perpendicular magnetic recording medium with improved corrosion resistance comprises sequential steps of providing a non-magnetic substrate including a surface; forming a soft magnetic underlayer (SUL) over the surface; post-deposition heating the SUL; forming an intermediate layer stack over the heated SUL; and forming at least one granular, magnetically hard perpendicular magnetic recording layer over the intermediate layer stack. Heating of the SUL prior to formation of the intermediate layer stack results in formation of an intermediate layer stack with a smoother surface and a granular perpendicular recording layer with increased corrosion resistance than when SUL post-deposition heating is not performed.

    摘要翻译： 制造具有改善的耐腐蚀性的颗粒状垂直磁记录介质的方法包括提供包括表面的非磁性基材的顺序步骤; 在表面上形成软磁性底层（SUL）; 后续加热SUL; 在加热的SUL上形成中间层堆叠; 以及在所述中间层堆叠上形成至少一个颗粒状，磁性硬的垂直磁记录层。 在形成中间层堆叠之前，SUL的加热导致形成具有更平滑的表面的中间层堆叠和具有比不执行SUL后续加热时更高的耐腐蚀性的颗粒垂直记录层。

    Granular magnetic recording media with improved corrosion resistance by pre-carbon overcoat ion etching
    3.
    发明申请
    Granular magnetic recording media with improved corrosion resistance by pre-carbon overcoat ion etching 审中-公开
    粒状磁记录介质通过预碳涂层离子蚀刻具有改善的耐腐蚀性

    公开(公告)号：US20050181239A1

    公开(公告)日：2005-08-18

    申请号：US10776223

    申请日：2004-02-12

    申请人： Xiaoding Ma ,  Michael Stirniman ,  Raj Thangaraj ,  Jing Gui ,  Tom Nolan ,  Huan Tang

    发明人： Xiaoding Ma ,  Michael Stirniman ,  Raj Thangaraj ,  Jing Gui ,  Tom Nolan ,  Huan Tang

    IPC分类号： B05D5/12 ,  G11B5/64 ,  G11B5/72 ,  G11B5/725 ,  G11B5/73 ,  G11B5/84 ,  G11B5/851 ,  G11B7/24

    CPC分类号： G11B5/84 ,  G11B5/656 ,  G11B5/722 ,  G11B5/725 ,  G11B5/7325 ,  G11B5/8408 ,  G11B5/851

    摘要： A granular longitudinal or perpendicular magnetic recording medium with enhanced corrosion resistance comprises: (a) a non-magnetic substrate having a surface; (b) a layer stack on the substrate surface, including a granular longitudinal or perpendicular magnetic recording layer having a surface distal the substrate surface treated to provide at least one of: (i) a reduction of nano-scale roughness and porosity; (ii) increased compositional homogeneity; (iii) increased microstructural homogeneity; (iv) preferential removal of at least one element; and (v) increased grain boundary coverage by the subsequently deposited protective overcoat layer; and (c) a protective overcoat layer on the treated surface of the granular magnetic recording layer.

    摘要翻译： 具有增强的耐腐蚀性的粒状纵向或垂直磁记录介质包括：（a）具有表面的非磁性基底; （b）衬底表面上的层叠体，包括具有被处理的衬底表面的表面的粒状纵向或垂直磁记录层，以提供以下至少一个：（i）降低纳米级粗糙度和孔隙率; （ii）增加组成均匀性; （iii）显微组织均匀性增加; （iv）优先除去至少一种元素; 和（v）随后沉积的保护性外涂层增加了晶界覆盖度; 和（c）粒状磁记录层的被处理表面上的保护性外涂层。

    GRANULAR PERPENDICULAR MAGNETIC RECORDING APPARATUS
    4.
    发明申请
    GRANULAR PERPENDICULAR MAGNETIC RECORDING APPARATUS 审中-公开
    全尺寸磁性记录仪

    公开(公告)号：US20130071693A1

    公开(公告)日：2013-03-21

    申请号：US13620110

    申请日：2012-09-14

    申请人： Raj Thangaraj ,  Huan Tang ,  Jing Gui ,  John Wang ,  Tommy T. Cheung

    发明人： Raj Thangaraj ,  Huan Tang ,  Jing Gui ,  John Wang ,  Tommy T. Cheung

    IPC分类号： G11B5/667

    CPC分类号： G11B5/667 ,  G11B5/656 ,  G11B5/7325 ,  G11B5/7379 ,  G11B5/8404

    摘要： A method of manufacturing a granular perpendicular magnetic recording medium with improved corrosion resistance comprises sequential steps of providing a non-magnetic substrate including a surface; forming a soft magnetic underlayer (SUL) over the surface; post-deposition heating the SUL; forming an intermediate layer stack over the heated SUL; and forming at least one granular, magnetically hard perpendicular magnetic recording layer over the intermediate layer stack. Heating of the SUL prior to formation of the intermediate layer stack results in formation of an intermediate layer stack with a smoother surface and a granular perpendicular recording layer with increased corrosion resistance than when SUL post-deposition heating is not performed.

    摘要翻译： 制造具有改善的耐腐蚀性的颗粒状垂直磁记录介质的方法包括提供包括表面的非磁性基材的顺序步骤; 在表面上形成软磁性底层（SUL）; 后续加热SUL; 在加热的SUL上形成中间层堆叠; 以及在所述中间层堆叠上形成至少一个颗粒状，磁性硬的垂直磁记录层。 在形成中间层堆叠之前，SUL的加热导致形成具有更平滑的表面的中间层堆叠和具有比不执行SUL后续加热时更高的耐腐蚀性的颗粒垂直记录层。

    Magnetic recording media with Ru corrosion barrier layer
    7.
    发明授权
    Magnetic recording media with Ru corrosion barrier layer 有权
    磁记录介质具有钌腐蚀阻隔层

    公开(公告)号：US06680106B1

    公开(公告)日：2004-01-20

    申请号：US10127771

    申请日：2002-04-23

    申请人： Raj Thangaraj ,  Charles Frederick Brucker ,  Huan Tang ,  Jing Gui ,  Gary Rauch

    发明人： Raj Thangaraj ,  Charles Frederick Brucker ,  Huan Tang ,  Jing Gui ,  Gary Rauch

    IPC分类号： G11B572

    CPC分类号： G11B5/722 ,  Y10T428/265

    摘要： Corrosion protection of magnetic recording media is achieved by providing a thin protective barrier layer comprising ruthenium on the magnetic layer. Embodiments include forming a corrosion barrier layer less than 10 Å of elemental ruthenium, a ruthenium oxide, a ruthenium alloy, a layer comprising mixed oxides of ruthenium and an alloying element, a composite of a ruthenium layer and a layer of ruthenium oxide or a composite of a ruthenium alloy layer and a layer of mixed oxides of ruthenium and an alloying element. A carbon containing an overcoat is then formed, as at a thickness of about 10 Å to 50 Å, on the corrosion protective layer.

    摘要翻译： 通过在磁性层上提供包含钌的薄的保护性阻挡层来实现磁记录介质的腐蚀保护。 实施例包括形成小于元素钌的腐蚀阻隔层，氧化钌，钌合金，包含钌和合金元素的混合氧化物的层，钌层和氧化钌层的复合物或复合材料 的钌合金层和钌和合金元素的混合氧化物层。 然后在腐蚀保护层上形成含有外涂层的碳，厚度为约至Å。