Method for making a perpendicular magnetic recording disk with template layer formed of nanoparticles embedded in a polymer material
    11.
    发明授权
    Method for making a perpendicular magnetic recording disk with template layer formed of nanoparticles embedded in a polymer material 有权
    用于制造具有由嵌入聚合物材料中的纳米颗粒形成的模板层的垂直磁记录盘的方法

    公开(公告)号:US08821736B1

    公开(公告)日:2014-09-02

    申请号:US13772145

    申请日:2013-02-20

    IPC分类号: B44C1/22 G11B5/855

    摘要: A method for making a perpendicular magnetic recording disk includes forming a template layer below a Ru or Ru alloy underlayer, with a granular Co alloy recording layer formed on the underlayer. The template layer is formed by depositing a solution of a polymer with a functional end group and nanoparticles, allowing the solution to dry, annealing the polymer layer to thereby form a polymer layer with embedded spaced-apart nanoparticles, and then etching the polymer layer to a depth sufficient to partially expose the nanoparticles so they protrude above the surface of the polymer layer. The protruding nanoparticles serve as controlled nucleation sites for the Ru or Ru alloy atoms. The nanoparticle-to-nanoparticle distances can be controlled during the formation of the template layer. This enables control of the Co alloy grain diameter distribution as well as grain-to-grain distance distribution.

    摘要翻译: 一种用于制造垂直磁记录盘的方法包括在Ru或Ru合金底层下方形成模板层,其上形成有在基底层上形成的Co合金记录层。 通过沉积具有官能端基和纳米颗粒的聚合物溶液形成模板层,使溶液干燥,退火聚合物层,从而形成具有嵌入间隔开的纳米颗粒的聚合物层,然后将聚合物层蚀刻到 足以部分地使纳米颗粒暴露的深度,使得它们突出在聚合物层的表面上方。 突出的纳米颗粒用作Ru或Ru合金原子的受控成核位点。 可以在形成模板层期间控制纳米颗粒与纳米颗粒的距离。 这使得能够控制Co合金晶粒直径分布以及晶粒间距离分布。

    Silicon/gold seed structure for crystalline alignment in a film stack
    13.
    发明授权
    Silicon/gold seed structure for crystalline alignment in a film stack 有权
    硅/金种子结构,用于膜叠层中的晶体取向

    公开(公告)号:US08492010B2

    公开(公告)日:2013-07-23

    申请号:US12772179

    申请日:2010-05-01

    IPC分类号: G11B5/66

    摘要: A silicon/gold (Si/Au) bilayer seed structure is located in a film stack between an amorphous or crystalline lower layer and an upper layer with a well-defined crystalline structure. The seed structure includes a Si layer on the generally flat surface of the lower layer and a Au layer on the Si layer. The Si/Au interface initiates the growth of the Au layer with a face-centered-cubic (fcc) crystalline structure with the (111) plane oriented in-plane. The upper layer grown on the Au layer has a fcc or hexagonal-close-packed (hcp) crystalline structure. If the upper layer is a fcc material its [111] direction is oriented substantially perpendicular to the (111) plane of the Au layer and if the upper layer is a hcp material, its c-axis is oriented substantially perpendicular to the (111) plane of the Au layer.

    摘要翻译: 硅/金(Si / Au)双层种子结构位于非晶或结晶下层与具有明确定义的结晶结构的上层之间的膜叠层中。 种子结构包括在下层的大致平坦表面上的Si层和Si层上的Au层。 Si / Au界面以(111)面定向在平面内的面心立方(fcc)晶体结构引发Au层的生长。 在Au层上生长的上层具有fcc或六方密堆积(hcp)晶体结构。 如果上层是fcc材料,其[111]方向定向成基本上垂直于Au层的(111)面,并且如果上层是hcp材料,则其c轴基本垂直于(111)面定向, Au层的平面。

    Heatsink films for magnetic recording media
    17.
    发明授权
    Heatsink films for magnetic recording media 有权
    用于磁记录介质的散热片

    公开(公告)号:US07862914B2

    公开(公告)日:2011-01-04

    申请号:US11189663

    申请日:2005-07-26

    IPC分类号: G11B5/66

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

    摘要: Metal alloy heatsink films for magnetic recording media are disclosed. The metal alloy heatsink films possess both high thermal conductivity and improved mechanical properties such as relatively high hardness. The metal alloy heatsink films also have controlled microstructures which are compatible with subsequently deposited crystalline magnetic recording layers. The films may comprise single phase CuZr or AgPd alloys having a selected crystal structure and orientation. The combination of high thermal conductivity, good mechanical properties and controlled microstructures makes the metal alloy heatsink films suitable for various applications including heat assisted magnetic recording systems.

    摘要翻译: 公开了用于磁记录介质的金属合金散热片。 金属合金散热片具有高导热性和改善的机械性能,例如相对较高的硬度。 金属合金散热片也具有与随后沉积的结晶磁记录层相容的受控微结构。 膜可以包括具有选定晶体结构和取向的单相CuZr或AgPd合金。 高导热性,良好的机械性能和可控微结构的组合使得金属合金散热片适用于各种应用,包括热辅助磁记录系统。

    Perpendicular Magnetic Recording Medium Having FCC Seed Layers
    18.
    发明申请
    Perpendicular Magnetic Recording Medium Having FCC Seed Layers 有权
    具有FCC种子层的垂直磁记录介质

    公开(公告)号:US20100309580A1

    公开(公告)日:2010-12-09

    申请号:US12793608

    申请日:2010-06-03

    IPC分类号: G11B21/02 G11B5/33

    摘要: According to one embodiment, a perpendicular magnetic recording medium includes at least one soft magnetic underlayer above a substrate, a seed layer above the at least one soft magnetic underlayer, an intermediate layer above the seed layer, a magnetic recording layer above the intermediate layer, and an overcoat layer above the magnetic recording layer, wherein the seed layer includes a second seed layer above a first seed layer. In another embodiment, the seed layer is a multilayered structure of at least two cycles of a unit of layered film which includes a first seed layer and a second seed layer. The first seed layer includes a non-magnetic alloy having a Face-Centered-Cubic (FCC) structure, and the second seed layer includes a soft magnetic alloy having a FCC structure. Other structures are also disclosed, according to more embodiments.

    摘要翻译: 根据一个实施例,垂直磁记录介质包括至少一个在基底上方的软磁性底层,至少一个软磁性底层上方的晶种层,种子层上方的中间层,中间层上方的磁记录层, 以及在所述磁记录层上方的覆盖层,其中所述种子层包括在第一种子层上方的第二种子层。 在另一个实施方案中,种子层是包括第一种子层和第二种子层的分层膜单元的至少两个循环的多层结构。 第一晶种层包括具有面心立方(FCC)结构的非磁性合金,第二晶种层包括具有FCC结构的软磁合金。 根据更多实施例,还公开了其他结构。

    Perpendicular magnetic recording medium and a method of manufacturing the same
    19.
    再颁专利
    Perpendicular magnetic recording medium and a method of manufacturing the same 有权
    垂直磁记录介质及其制造方法

    公开(公告)号:USRE41282E1

    公开(公告)日:2010-04-27

    申请号:US11945854

    申请日:2007-11-27

    IPC分类号: G11B5/71 G11B5/66 C23C20/00

    摘要: A perpendicular magnetic recording medium has a granular magnetic layer and a nonmagnetic underlayer of a metal or an alloy having a hexagonal close packed (hcp) crystal structure. A seed layer of a metal or an alloy of a face-centered cubic (fcc) crystal structure is provided under the nonmagnetic underlayer. Such a perpendicular magnetic recording medium exhibits excellent magnetic characteristics even when the thickness of the underlayer or the total thickness of the underlayer and the seed layer is very thin. Excellent magnetic characteristics can be obtained even when of the substrate is not preheated. Accordingly, a nonmagnetic substrate, such as a plastic resin can be employed to reduce the manufacturing cost.

    摘要翻译: 垂直磁记录介质具有颗粒磁性层和具有六方密堆积(hcp)晶体结构的金属或合金的非磁性底层。 在非磁性底层下方设置面心立方(fcc)晶体结构的金属种子层或合金。 即使当底层的厚度或底层和种子层的总厚度非常薄时,这种垂直磁记录介质也表现出优异的磁特性。 即使在未预热基板的情况下也能获得良好的磁特性。 因此,可以采用塑料树脂等非磁性基板来降低制造成本。

    Process for fabricating patterned magnetic recording media
    20.
    发明授权
    Process for fabricating patterned magnetic recording media 有权
    制造图案化磁记录介质的方法

    公开(公告)号:US07704614B2

    公开(公告)日:2010-04-27

    申请号:US11583845

    申请日:2006-10-20

    IPC分类号: G11B5/66

    CPC分类号: G11B5/855 G11B5/667 G11B5/732

    摘要: A method of fabricating a patterned magnetic recording medium, comprises steps of: (a) providing a layer stack including an uppermost non-magnetic interlayer; (b) forming a resist layer on the interlayer; (c) forming a first pattern comprising a first group of recesses extending through the resist layer and exposing a first group of spaced apart surface portions of the interlayer; (d) filling the first group of recesses with a layer of a hard mask material; (e) selectively removing the resist layer to form a second pattern comprising a second group of recesses extending through the hard mask layer and exposing a second group of spaced apart surface portions of the interlayer; and (f) filling the second group of recesses with a layer of a magnetically hard material forming a magnetic recording layer.

    摘要翻译: 一种制造图案化磁记录介质的方法,包括以下步骤:(a)提供包括最上面的非磁性中间层的层堆叠; (b)在所述中间层上形成抗蚀剂层; (c)形成第一图案,其包括延伸穿过抗蚀剂层的第一组凹槽,并暴露出中间层的第一组间隔开的表面部分; (d)用一层硬掩模材料填充第一组凹槽; (e)选择性地去除所述抗蚀剂层以形成第二图案,所述第二图案包括延伸穿过所述硬掩模层并暴露所述中间层的第二组间隔开的表面部分的第二组凹部; 和(f)用形成磁记录层的磁性硬质材料层填充第二组凹部。