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45 条记录 (耗时 0.027 秒)

    Damping control in magnetic recording systems
    15.
    发明申请
    Damping control in magnetic recording systems 有权
    磁记录系统中的阻尼控制

    公开(公告)号：US20070003792A1

    公开(公告)日：2007-01-04

    申请号：US11170035

    申请日：2005-06-29

    申请人： Mark Covington ,  Ganping Ju ,  Werner Scholz ,  Michael Minor

    发明人： Mark Covington ,  Ganping Ju ,  Werner Scholz ,  Michael Minor

    IPC分类号： G11B5/33 ,  G11B5/66

    CPC分类号： G11B5/667 ,  G11B5/1278 ,  G11B5/581 ,  G11B5/6005 ,  Y10T428/115 ,  Y10T428/1186

    摘要： A magnetic recording system is disclosed in which the magnetization dynamics of the write head and recording medium are highly damped. The system may comprise a perpendicular recording head having a write pole, and a recording medium including a hard magnetic recording layer and a soft magnetic underlayer (SUL). The increased magnetic damping in the write pole and SUL suppresses precessional motion of the respective magnetizations, leading to a reduction in transition jitter caused by spurious head field fluctuations. The damping may be increased by providing films or multilayer structures that are doped with rare earth or transition metal elements. Exchange coupled laminates of doped and undoped layers may optimize both the effective damping and write field in the recording system.

    摘要翻译： 公开了一种磁记录系统，其中写头和记录介质的磁化动力学被高度阻尼。 该系统可以包括具有写入极的垂直记录头和包括硬磁记录层和软磁性底层（SUL）的记录介质。 写入磁极和SUL中的增加的磁阻抑制了相应磁化的进动运动，导致由杂散磁头场波动引起的转换抖动的减小。 可以通过提供掺杂有稀土或过渡金属元素的膜或多层结构来增加阻尼。 掺杂和未掺杂层的交换耦合层压板可以优化记录系统中的有效阻尼和写入场。

    Perpendicular magnetic recording media including a uniform exchange enhancement layer
    16.
    发明申请
    Perpendicular magnetic recording media including a uniform exchange enhancement layer 审中-公开
    垂直磁记录介质包括均匀交换增强层

    公开(公告)号：US20060269797A1

    公开(公告)日：2006-11-30

    申请号：US11138622

    申请日：2005-05-26

    申请人： Bin Lu ,  Ganping Ju ,  Ashwin Sunder ,  Dieter Weller

    发明人： Bin Lu ,  Ganping Ju ,  Ashwin Sunder ,  Dieter Weller

    IPC分类号： G11B5/65

    CPC分类号： G11B5/65 ,  G11B5/72

    摘要： An apparatus comprises a substrate, a soft underlayer on the substrate, an interlayer on the soft underlayer, a magnetic layer on the interlayer, wherein the magnetic layer has a granular structure comprising magnetic grains separated by non-magnetic grain boundaries, and an exchange enhancement layer formed on the surface of the granular magnetic layer.

    摘要翻译： 一种装置，包括基板，基板上的软底层，软底层上的中间层，中间层上的磁性层，其中磁性层具有由非磁性晶界分离的磁性颗粒的颗粒结构和交换增强 层形成在粒状磁性层的表面上。

    Hybrid grain boundary additives in granular media
    17.
    发明授权
    Hybrid grain boundary additives in granular media 有权
    颗粒介质中的杂晶晶界添加剂

    公开(公告)号：US08722214B2

    公开(公告)日：2014-05-13

    申请号：US13619245

    申请日：2012-09-14

    申请人： Yingguo Peng ,  Ganping Ju

    发明人： Yingguo Peng ,  Ganping Ju

    IPC分类号： G11B5/66

    CPC分类号： G11B5/656 ,  B82Y10/00 ,  G11B5/65 ,  G11B5/653 ,  G11B5/73 ,  G11B5/7315 ,  G11B5/7325 ,  G11B5/746 ,  G11B5/851 ,  H01F1/06 ,  H01F10/123 ,  H01F41/18

    摘要： Magnetic layers are described that include the use of magnetic grains and non-magnetic grain boundaries with hybrid additives. Hybrid additives include the use of at least two different additives in the composition of the grain boundaries of a magnetic layer in magnetic recording media. The use of hybrid additives in the grain boundaries results in improved recording media. Methods for forming magnetic layers and magnetic recording media with the hybrid additive grain boundaries are also described.

    摘要翻译： 描述了包括使用磁性颗粒和非磁性晶界与混合添加剂的磁性层。 混合添加剂包括在磁记录介质中磁性层的晶界组成中使用至少两种不同的添加剂。 在晶界中使用混合添加剂导致改进的记录介质。 还描述了用于形成具有混合添加剂晶界的磁性层和磁记录介质的方法。

    Laminated exchange coupling adhesion (LECA) media for heat assisted magnetic recording
    19.
    发明授权
    Laminated exchange coupling adhesion (LECA) media for heat assisted magnetic recording 有权
    用于热辅助磁记录的层压交换耦合粘合（LECA）介质

    公开(公告)号：US08241766B2

    公开(公告)日：2012-08-14

    申请号：US11835476

    申请日：2007-08-08

    申请人： Bin Lu ,  Ganping Ju

    发明人： Bin Lu ,  Ganping Ju

    IPC分类号： G11B5/66

    CPC分类号： G11B5/314 ,  G11B5/1278 ,  G11B2005/001 ,  G11B2005/0021

    摘要： An apparatus includes a plurality of bilayer structures positioned adjacent to each other, each of the bilayer structures including a first layer of magnetic material having a first Curie temperature and a second layer of magnetic material positioned adjacent to the first layer, wherein the second layer has a second Curie temperature that is lower than the first Curie temperature, and magnetic grains of the first layer are unstable when the second layer of magnetic material is heated above the second Curie temperature. The recording temperature is reduced due to the smaller switching volume achieved by using vertically decoupled laminations at elevated temperatures.

    摘要翻译： 一种装置包括彼此相邻定位的多个双层结构，每个双层结构包括具有第一居里温度的第一层磁性材料和邻近第一层定位的第二层磁性材料，其中第二层具有 第二居里温度低于第一居里温度时，当第二层磁性材料被加热到高于第二居里温度时，第一层的磁性颗粒是不稳定的。 由于在升高的温度下使用垂直去耦的叠片来实现较小的开关体积，所以记录温度降低。

    PATTERNED TEMPLATE WITH 1xN NUCLEATION SITE TO GRAIN GROWTH FOR UNIFORM GRAIN SIZE RECORDING MEDIA
    20.
    发明申请
    PATTERNED TEMPLATE WITH 1xN NUCLEATION SITE TO GRAIN GROWTH FOR UNIFORM GRAIN SIZE RECORDING MEDIA 有权
    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：US20120082866A1

    公开(公告)日：2012-04-05

    申请号：US12895564

    申请日：2010-09-30

    申请人： Shuaigang Xiao ,  Thomas Young Chang ,  Yingguo Peng ,  David Kuo ,  Kaizhong Gao ,  Tom Nolan ,  Ganping Ju

    发明人： Shuaigang Xiao ,  Thomas Young Chang ,  Yingguo Peng ,  David Kuo ,  Kaizhong Gao ,  Tom Nolan ,  Ganping Ju

    IPC分类号： G11B5/66

    CPC分类号： G11B5/7325 ,  G11B5/84 ,  G11B5/855

    摘要： 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.

    摘要翻译： 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。