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    3DMR media with multiple write field levels
    3.
    发明授权
    3DMR media with multiple write field levels 有权

    公开(公告)号：US09779770B1

    公开(公告)日：2017-10-03

    申请号：US15174520

    申请日：2016-06-06

    Applicant: Seagate Technology LLC

    Inventor： Thomas P. Nolan ,  Bruce Buch ,  Philip L. Steiner

    IPC: G11B5/74 ,  G11B5/64 ,  G11B20/14

    CPC classification number: G11B5/64

    Abstract: A three-dimensional magnetic recording media can consist of a single recording layer configured with three or more separate magnetization levels. A first magnetization level can be written to a selected region of said recording layer by applying a first write field to the grains of said region to form a “spin-up” magnetization in the grains of said region. A second magnetization level can be written by applying a second opposite write field to selected grains of said region to form a “spin-down” magnetization. At least a third intermediate magnetization level can be written by applying a weaker or alternating write field to grains of said region to form an intermediate magnetization comprising a mixture of spin-up and spin-down grains. By such method, said region may comprise a data bit capable of storing 3 or more units of information corresponding to the number of separate magnetization levels employed.

    Stack Including a Magnetic Zero Layer
    4.
    发明申请
    Stack Including a Magnetic Zero Layer 审中-公开
    堆叠包括磁零层

    公开(公告)号：US20150332721A1

    公开(公告)日：2015-11-19

    申请号：US14808063

    申请日：2015-07-24

    Applicant: Seagate Technology LLC

    Inventor： Jai-Young Kim ,  Thomas P. Nolan ,  Kyongha Kang ,  Shoutao Wang ,  Vincent D. Nguyen ,  Abebe Hailu ,  Charles C. Chen

    IPC: G11B5/66 ,  G11B5/851 ,  G11B5/73

    CPC classification number: G11B5/82 ,  G11B5/66 ,  G11B5/7325 ,  G11B5/851

    Abstract: A stack including a crystallographic orientation interlayer, a magnetic zero layer disposed on the interlayer, and a magnetic recording layer disposed on the magnetic zero layer is disclosed. The magnetic zero layer is non-magnetic or has a saturation magnetic flux density (Bs) less than about 100 emu/cc. The magnetic zero layer and the magnetic layer include grains surrounded by a non-magnetic segregant. The magnetic zero layer provides a coherent interface between the interlayer and the magnetic layer with a lattice mismatch less than about 4%.

    Abstract translation: 公开了一种包括晶体取向中间层，设置在中间层上的磁性零层和设置在磁性零层上的磁记录层的堆叠。 磁性零层是非磁性的或具有小于约100emu / cc的饱和磁通密度（Bs）。 磁性零层和磁性层包括由非磁性分离器包围的晶粒。 磁性零层在中间层和磁性层之间提供具有小于约4％的晶格失配的相干界面。

    PATTERNED TEMPLATE WITH 1xN NUCLEATION SITE TO GRAIN GROWTH FOR UNIFORM GRAIN SIZE RECORDING MEDIA
    5.
    发明申请
    PATTERNED TEMPLATE WITH 1xN NUCLEATION SITE TO GRAIN GROWTH FOR UNIFORM GRAIN SIZE RECORDING MEDIA 审中-公开
    带有1xN核心位点的模式，用于均匀粒度记录介质的颗粒生长

    公开(公告)号：US20140127533A1

    公开(公告)日：2014-05-08

    申请号：US14154018

    申请日：2014-01-13

    Applicant: Seagate Technology LLC

    Inventor： Shuaigang Xiao ,  Thomas Young Chang ,  Yingguo Peng ,  David S. Kuo ,  Kaizhong Gao ,  Thomas P. Nolan ,  Ganping Ju

    IPC: G11B5/73 ,  G11B5/84

    CPC classification number: G11B5/7325 ,  G11B5/84 ,  G11B5/855

    Abstract: A perpendicular magnetic media includes a substrate, a patterned template, a seed layer and a magnetic layer. The patterned template is formed on the substrate and includes a plurality of growth sites that are evenly spaced apart from each other. The seed layer is formed over the patterned template and the exposed areas of the substrate. Magnetic material is sputter deposited onto the seed layer with one grain of the magnetic material nucleated over each of the growth sites. The grain size distribution of the magnetic material is reduced by controlling the locations of the growth sites which optimizes the performance of the perpendicular magnetic media.

    Abstract translation: 垂直磁性介质包括衬底，图案化模板，种子层和磁性层。 图案化模板形成在基板上并且包括彼此均匀间隔开的多个生长位点。 种子层形成在图案化模板和基板的暴露区域上。 将磁性材料溅射沉积到种子层上，其中一颗磁性材料成核在每个生长位点上。 通过控制优化垂直磁性介质性能的生长部位的位置来减小磁性材料的粒度分布。

    APPARATUS INCLUDING A PERPENDICULAR MAGNETIC RECORDING LAYER HAVING A CONVEX MAGNETIC ANISOTROPY PROFILE
    8.
    发明申请
    APPARATUS INCLUDING A PERPENDICULAR MAGNETIC RECORDING LAYER HAVING A CONVEX MAGNETIC ANISOTROPY PROFILE 审中-公开
    装置包括一个具有凸起的磁性异相剖面的磁记录层

    公开(公告)号：US20160055873A1

    公开(公告)日：2016-02-25

    申请号：US14857365

    申请日：2015-09-17

    Applicant: Seagate Technology LLC

    Inventor： Thomas P. Nolan ,  Hans Richter

    IPC: G11B5/66 ,  G11B5/84 ,  G11B5/74

    CPC classification number: G11B5/66 ,  G11B5/65 ,  G11B5/746 ,  G11B5/82 ,  G11B5/84

    Abstract: An apparatus may include a first magnetic layer, a first exchange break layer formed on the first magnetic layer, a second magnetic layer formed on the first exchange break layer, a second exchange break layer formed on the second magnetic layer, and a third magnetic layer formed on the second exchange break layer. The first magnetic layer has a first magnetic anisotropy energy, Hk1, the second magnetic layer has a second magnetic anisotropy energy, Hk2, and the third magnetic layer has a third magnetic anisotropy energy, Hk3. In some embodiments, Hk1−Hk2 is less than Hk2−Hk3. In some embodiments, the apparatus may be a perpendicular magnetic recording medium.

    Abstract translation: 一种装置可以包括第一磁性层，形成在第一磁性层上的第一交换破坏层，形成在第一交换断裂层上的第二磁性层，形成在第二磁性层上的第二交换破坏层，第三磁性层 形成在第二交换断层上。 第一磁性层具有第一磁各向异性能H k1，第二磁性层具有第二磁各向异性能H k2，第三磁性层具有第三磁各向异性能H k3。 在一些实施方案中，Hk1-Hk2小于Hk2-Hk3。 在一些实施例中，该装置可以是垂直磁记录介质。

    PERPENDICULAR RECORDING MEDIUM WITH OXIDE GRADIENT LAYER
    9.
    发明申请
    PERPENDICULAR RECORDING MEDIUM WITH OXIDE GRADIENT LAYER 审中-公开
    具有氧化层的PERPENDICULAR RECORDING MEDIUM

    公开(公告)号：US20140044993A1

    公开(公告)日：2014-02-13

    申请号：US14055640

    申请日：2013-10-16

    Applicant: Seagate Technology LLC

    Inventor： Pengcheng Li ,  Bin Lu ,  Thomas P. Nolan ,  Li-Lien Lee ,  Jai-Young Kim

    IPC: G11B5/66

    CPC classification number: G11B5/66 ,  G06Q20/3224 ,  G11B5/65 ,  G11B5/656 ,  G11B5/82 ,  H04L12/1859 ,  H04W4/021 ,  H04W4/04

    Abstract: Apparatus for recording data and method for making the same. In accordance with some embodiments, a recording layer is supported by a substrate. The recording layer has a granular magnetic recording layer with a first oxide content, a continuous magnetic recording layer with nominally no oxide content, and an oxide gradient layer disposed between the respective granular magnetic recording layer and the continuous magnetic recording layer. The oxide gradient layer has a second oxide content less than the first oxide content of the granular layer.

    Abstract translation: 用于记录数据的装置及其制造方法。 根据一些实施例，记录层由衬底支撑。 记录层具有具有第一氧化物含量的粒状磁记录层，名义上不含氧化物含量的连续磁记录层，以及设置在各粒状磁记录层和连续磁记录层之间的氧化物梯度层。 氧化物梯度层的第二氧化物含量小于颗粒层的第一氧化物含量。

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