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    Perpendicular magnetic recording media with thin soft magnetic underlayers and recording systems comprising same
    1.
    发明申请
    Perpendicular magnetic recording media with thin soft magnetic underlayers and recording systems comprising same 有权
    具有薄软磁底层的垂直磁记录介质和包含该磁性底层的记录系统

    公开(公告)号：US20080131734A1

    公开(公告)日：2008-06-05

    申请号：US11606998

    申请日：2006-12-01

    申请人： Li Tang ,  Weilu Xu ,  Youfeng Zheng ,  Shanghsien Rou ,  Connie Chunling Liu ,  Jianhua Xue ,  Li-Lien Lee

    发明人： Li Tang ,  Weilu Xu ,  Youfeng Zheng ,  Shanghsien Rou ,  Connie Chunling Liu ,  Jianhua Xue ,  Li-Lien Lee

    IPC分类号： G11B5/65 ,  G11B5/127 ,  G11B5/66 ,  B05D5/12

    CPC分类号： G11B5/667 ,  G11B5/1278 ,  G11B5/65 ,  G11B5/66 ,  G11B5/7325

    摘要： A perpendicular magnetic recording medium comprises a non-magnetic substrate having a surface; and a plurality of overlying thin film layers forming a layer stack on the substrate surface, the layer stack including a magnetically hard perpendicular magnetic recording layer structure and an underlying soft magnetic underlayer (SUL), the SUL having a thickness of up to about 100 Å. Also disclosed is a data/information recording, storage, and retrieval system comprising the perpendicular magnetic recording medium and a single-pole magnetic transducer head including main and auxiliary poles positioned in spaced adjacency to an upper surface of the layer stack, the single-pole transducer head comprising a front shield adjacent the main pole.

    摘要翻译： 垂直磁记录介质包括具有表面的非磁性基板; 以及在衬底表面上形成层堆叠的多个上覆薄膜层，所述层堆叠包括磁性硬垂直磁记录层结构和下面的软磁性底层（SUL），所述SUL具有高达约100埃的厚度 。 还公开了一种包括垂直磁记录介质和单极磁换能器头的数据/信息记录，存储和检索系统，其包括与层堆叠的上表面间隔开的主副磁极，单极 换能器头包括邻近主极的前屏蔽。

    Seed layer comprising FCC structure
    3.
    发明授权
    Seed layer comprising FCC structure 有权
    种子层包括FCC结构

    公开(公告)号：US08696874B2

    公开(公告)日：2014-04-15

    申请号：US13367991

    申请日：2012-02-07

    申请人： Shoutao Wang ,  Weilu Xu ,  Chunghee Chang ,  Xiaoguang Ma ,  Mark Johnson ,  Abebe Hailu ,  Charles Chen

    发明人： Shoutao Wang ,  Weilu Xu ,  Chunghee Chang ,  Xiaoguang Ma ,  Mark Johnson ,  Abebe Hailu ,  Charles Chen

    IPC分类号： C23C14/34

    CPC分类号： G11B5/84 ,  G11B5/732 ,  G11B5/7325 ,  G11B5/738

    摘要： An apparatus and method are provided for improving perpendicular magnetic recording media. The present invention provides media, and a method of fabricating media in a cost-effective manner, with a reduced ruthenium (Ru) content interlayer structure, while meeting media performance requirements. A perpendicular magnetic recording medium is provided comprising a non-magnetic substrate having a surface, and a layer stack situated on the substrate surface. The layer stack comprises, in overlying sequence from the substrate surface a magnetically soft underlayer; an amorphous or crystalline, non-magnetic seed layer; an interlayer structure for crystallographically orienting a layer of a perpendicular magnetic recording material situated on the underlayer; and at least one crystallographically oriented, magnetically hard, perpendicular magnetic recording layer situated on the interlayer structure. The interlayer structure is a stacked structure comprising, in overlying sequence: a chromium alloy situated on the seed layer; and an upper interlayer situated on the chromium alloy.

    摘要翻译： 提供了用于改进垂直磁记录介质的装置和方法。 本发明在满足介质性能要求的同时，提供了具有降低的钌（Ru）含量层间结构的以成本有效的方式制造介质的介质和方法。 提供了包括具有表面的非磁性基底和位于基底表面上的层叠的垂直磁记录介质。 层叠体以从衬底表面的叠加顺序包括一个软磁软底层; 无定形或结晶的非磁性种子层; 用于晶体取向位于底层上的垂直磁记录材料层的层间结构; 以及位于层间结构上的至少一个晶体取向的磁性硬的垂直磁记录层。 层间结构是层叠结构，其叠加顺序为：位于种子层上的铬合金; 和位于铬合金上的上层。

    Perpendicular magnetic recording media with thin soft magnetic underlayers and recording systems comprising same
    4.
    发明授权
    Perpendicular magnetic recording media with thin soft magnetic underlayers and recording systems comprising same 有权
    具有薄软磁底层的垂直磁记录介质和包含该磁性底层的记录系统

    公开(公告)号：US08465854B2

    公开(公告)日：2013-06-18

    申请号：US11606998

    申请日：2006-12-01

    申请人： Li Tang ,  Weilu Xu ,  Youfeng Zheng ,  Shanghsien Rou ,  Connie Chunling Liu ,  Jianhua Xue ,  Li-Lien Lee

    发明人： Li Tang ,  Weilu Xu ,  Youfeng Zheng ,  Shanghsien Rou ,  Connie Chunling Liu ,  Jianhua Xue ,  Li-Lien Lee

    IPC分类号： G11B5/65

    CPC分类号： G11B5/667 ,  G11B5/1278 ,  G11B5/65 ,  G11B5/66 ,  G11B5/7325

    摘要： A perpendicular magnetic recording medium comprises a non-magnetic substrate having a surface; and a plurality of overlying thin film layers forming a layer stack on the substrate surface, the layer stack including a magnetically hard perpendicular magnetic recording layer structure and an underlying soft magnetic underlayer (SUL), the SUL having a thickness of up to about 100 Å. Also disclosed is a data/information recording, storage, and retrieval system comprising the perpendicular magnetic recording medium and a single-pole magnetic transducer head including main and auxiliary poles positioned in spaced adjacency to an upper surface of the layer stack, the single-pole transducer head comprising a front shield adjacent the main pole.

    摘要翻译： 垂直磁记录介质包括具有表面的非磁性基板; 以及在衬底表面上形成层堆叠的多个上覆薄膜层，所述层堆叠包括磁性硬垂直磁记录层结构和下面的软磁性底层（SUL），所述SUL具有高达约100埃的厚度 。 还公开了一种包括垂直磁记录介质和单极磁换能器头的数据/信息记录，存储和检索系统，其包括与层堆叠的上表面间隔开的主副磁极，单极 换能器头包括邻近主极的前屏蔽。

    Granular perpendicular magnetic recording media with multi-interlayer structure
    5.
    发明申请
    Granular perpendicular magnetic recording media with multi-interlayer structure 有权
    具有多层结构的颗粒垂直磁记录介质

    公开(公告)号：US20080204933A1

    公开(公告)日：2008-08-28

    申请号：US11709822

    申请日：2007-02-23

    申请人： Abebe Hailu ,  Weilu Xu ,  Xiaoguang Ma ,  Chung-Hee Chang ,  Shoutao Wang ,  Charles C. Chen

    发明人： Abebe Hailu ,  Weilu Xu ,  Xiaoguang Ma ,  Chung-Hee Chang ,  Shoutao Wang ,  Charles C. Chen

    IPC分类号： G11B5/82

    CPC分类号： G11B5/732 ,  G11B5/65 ,  G11B5/667 ,  G11B5/7325

    摘要： A perpendicular magnetic recording medium comprises a layer stack formed over a surface of a non-magnetic substrate, and comprising, in overlying sequence from the surface: a magnetically soft underlayer; an interlayer structure for crystallographically orienting a layer of a perpendicular magnetic recording material formed thereon; and at least one crystallographically oriented, magnetically hard, perpendicular magnetic recording layer on the interlayer structure; wherein the interlayer structure is a triple-layer stacked structure comprising: a first interlayer of a first non-magnetic material proximal the magnetically soft underlayer and containing Ru; a second interlayer of a second non-magnetic material in overlying contact with the first interlayer and not containing Ru; and a third interlayer of a third non-magnetic material in overlying contact with the second interlayer and containing Ru.

    摘要翻译： 垂直磁记录介质包括形成在非磁性衬底的表面上的层叠层，并且包括从表面叠加的顺序：软磁性底层; 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; 以及在层间结构上的至少一个晶体取向的磁性硬的垂直磁记录层; 其中所述层间结构是三层堆叠结构，包括：靠近所述磁软底层并包含Ru的第一非磁性材料的第一中间层; 第二非磁性材料的第二中间层与第一中间层重叠接触并且不含Ru; 以及第三非磁性材料的第三中间层，与第二夹层重叠接触并含有Ru。

    Method and apparatus for optically determining physical parameters of underlayers
    6.
    发明授权
    Method and apparatus for optically determining physical parameters of underlayers 有权
    用于光学确定底层物理参数的方法和装置

    公开(公告)号：US6091485A

    公开(公告)日：2000-07-18

    申请号：US464640

    申请日：1999-12-15

    申请人： Guoguang Li ,  Hongwei Zhu ,  Dale A. Harrison ,  Abdul Rahim Forouhi ,  Weilu Xu

    发明人： Guoguang Li ,  Hongwei Zhu ,  Dale A. Harrison ,  Abdul Rahim Forouhi ,  Weilu Xu

    IPC分类号： G01N21/00

    CPC分类号： G01N21/41 ,  G01N21/55 ,  G01N21/59

    摘要： A method and apparatus for optically determining a physical parameter of an underlayer such as the underlayer refractive index N.sub.u, extinction coefficient k.sub.u and/or thickness t.sub.u through a top layer having a first top layer thickness t.sub.1 and an assigned refractive index index n.sub.t and coefficient of extinction k.sub.t. The values of index n.sub.t and extinction coefficient k.sub.t can be estimated, optically determined or assigned based on prior knowledge. In a subsequent step a first reflectance R.sub.1 is measured over a wavelength range .DELTA..lambda. by using a test beam spanning that wavelength range. Then, a second reflectance R.sub.2 of the top layer and underlayer is measured using the test beam spanning wavelength range .DELTA..lambda. at a second top layer thickness t.sub.2. In a calculation step the physical parameter of the underlayer is determined from the first reflectance measurement R.sub.1, the second reflectance measurement R.sub.2, and the assigned or predetermined thickness values t.sub.1, t.sub.2, and the refractive index n.sub.t. and coefficient of extinction k.sub.t of the top layer. A dispersion model can be used in this calculation step. Alternatively, with transmissive samples, a first and second transmittance T.sub.1, T.sub.2 can be used.

    摘要翻译： 一种用于通过具有第一顶层厚度t1和所分配的折射率指数nt的顶层以及所分配的折射率指数nt和的系数来光学地确定诸如底层折射率Nu，消光系数ku和/或厚度tu的底层的物理参数的方法和装置 灭绝kt 指数nt和消光系数kt的值可以基于现有知识来估计，光学确定或分配。 在随后的步骤中，通过使用横跨该波长范围的测试光束，在波长范围DELTAλ上测量第一反射率R1。 然后，使用第二顶层厚度t2的跨越波长范围DELTAλ的测试光束来测量顶层和底层的第二反射率R2。 在计算步骤中，从第一反射率测量R1，第二反射率测量R2和分配的或预定的厚度值t1，t2和折射率nt确定底层的物理参数。 和顶层消光系数kt。 在该计算步骤中可以使用色散模型。 或者，对于透射样品，可以使用第一和第二透射率T1，T2。

    Recording media interlayer structure
    7.
    发明授权
    Recording media interlayer structure 有权
    记录介质层间结构

    公开(公告)号：US08025993B2

    公开(公告)日：2011-09-27

    申请号：US11709822

    申请日：2007-02-23

    申请人： Abebe Hailu ,  Weilu Xu ,  Xiaoguang Ma ,  Chung-Hee Chang ,  Shoutao Wang ,  Charles C. Chen

    发明人： Abebe Hailu ,  Weilu Xu ,  Xiaoguang Ma ,  Chung-Hee Chang ,  Shoutao Wang ,  Charles C. Chen

    IPC分类号： G11B5/66

    CPC分类号： G11B5/732 ,  G11B5/65 ,  G11B5/667 ,  G11B5/7325

    摘要： A perpendicular magnetic recording medium comprises a layer stack formed over a surface of a non-magnetic substrate, and comprising, in overlying sequence from the surface: a magnetically soft underlayer; an interlayer structure for crystallographically orienting a layer of a perpendicular magnetic recording material formed thereon; and at least one crystallographically oriented, magnetically hard, perpendicular magnetic recording layer on the interlayer structure; wherein the interlayer structure is a triple-layer stacked structure comprising: a first interlayer of a first non-magnetic material proximal the magnetically soft underlayer and containing Ru; a second interlayer of a second non-magnetic material in overlying contact with the first interlayer and not containing Ru; and a third interlayer of a third non-magnetic material in overlying contact with the second interlayer and containing Ru.

    摘要翻译： 垂直磁记录介质包括形成在非磁性衬底的表面上的层叠层，并且包括从表面叠加的顺序：软磁性底层; 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; 以及在层间结构上的至少一个晶体取向的磁性硬的垂直磁记录层; 其中所述层间结构是三层堆叠结构，包括：靠近所述磁软底层并包含Ru的第一非磁性材料的第一中间层; 第二非磁性材料的第二中间层与第一中间层重叠接触并且不含Ru; 以及第三非磁性材料的第三中间层，与第二夹层重叠接触并含有Ru。

    MAGNETIC RECORDING MEDIA WITH ENHANCED WRITABILITY AND THERMAL STABILITY
    8.
    发明申请
    MAGNETIC RECORDING MEDIA WITH ENHANCED WRITABILITY AND THERMAL STABILITY 有权
    磁记录介质具有增强的可写性和热稳定性

    公开(公告)号：US20100209737A1

    公开(公告)日：2010-08-19

    申请号：US12389039

    申请日：2009-02-19

    申请人： Bo Bian ,  Shoutao Wang ,  Weilu Xu ,  Abebe Hailu ,  Miaogen Lu ,  Charles C. Chen ,  Thomas Patrick Nolan ,  Alexander Yulievich Dobin

    发明人： Bo Bian ,  Shoutao Wang ,  Weilu Xu ,  Abebe Hailu ,  Miaogen Lu ,  Charles C. Chen ,  Thomas Patrick Nolan ,  Alexander Yulievich Dobin

    IPC分类号： G11B5/66 ,  B05D5/12

    CPC分类号： G11B5/66 ,  G11B5/65

    摘要： Aspects are directed to recording media with enhanced magnetic properties for improved writability. Examples can be included or related to methods, systems and components that allow for improved writability while reducing defects so as to obtain uniform magnetic properties such as uniformly high anisotropy and narrow switching field distribution. Some examples include a recording medium with an exchange tuning layer inserted between the hard layer and the soft, semi-soft or thin semi-hard layer so as to maximize the writability improvement of the media. Preferably, the exchange tuning layer is granular and reduces or optimizes the vertical coupling between the hard layer and the soft, semi-soft or semi-hard layer of a magnetic recording or storing device.

    摘要翻译： 方面涉及具有增强的磁性能的记录介质以改善可写性。 可以包括或涉及允许改善可写性同时减少缺陷以获得均匀的磁性能如均匀高的各向异性和窄的开关场分布的方法，系统和组件的实例。 一些示例包括具有插入在硬层和软，半软或薄半硬层之间的交换调谐层的记录介质，以便最大限度地提高介质的可写性。 优选地，交换调谐层是粒状的并且减小或优化硬记录层与磁记录或存储装置的软，半软或半硬层之间的垂直耦合。

    Magnetic recording media with manganese-containing underlayer
    10.
    发明申请
    Magnetic recording media with manganese-containing underlayer 审中-公开
    具有含锰底层的磁记录介质

    公开(公告)号：US20070122660A1

    公开(公告)日：2007-05-31

    申请号：US11287240

    申请日：2005-11-28

    申请人： Weilu Xu ,  Li-Lien Lee ,  Charles Chen ,  Shanghsien Rou ,  Kuo-Hsing Hwang

    发明人： Weilu Xu ,  Li-Lien Lee ,  Charles Chen ,  Shanghsien Rou ,  Kuo-Hsing Hwang

    IPC分类号： G11B5/66

    CPC分类号： G11B5/7325 ,  G11B5/66

    摘要： A thin film magnetic recording medium with enhanced signal-to-noise ratio (SNR) comprises a non-magnetic substrate having a surface; and a layer stack atop the substrate surface, comprising at least one magnetic recording layer and a plurality of layers beneath the at least one magnetic recording layer, including: a first underlayer proximal the substrate surface; a second, grain size refinement underlayer in overlying contact with the first underlayer; a third, in-plane growth orientation underlayer in overlying contact with the second underlayer; and a magnetic stabilization layer in overlying contact with the third underlayer, wherein the third underlayer comprises manganese (Mn).

    摘要翻译： 具有增强的信噪比（SNR）的薄膜磁记录介质包括具有表面的非磁性基底; 以及在所述衬底表面上方的层叠层，包括至少一个磁记录层和所述至少一个磁记录层下面的多个层，包括：靠近所述衬底表面的第一底层; 第二，与第一底层重叠接触的粒度细化底层; 与第二底层重叠接触的第三个面内生长取向底层; 以及与所述第三底层重叠接触的磁稳定层，其中所述第三底层包含锰（Mn）。