Disk drive having reduced variation of disk surface lubricant layer thickness
    12.
    发明申请
    Disk drive having reduced variation of disk surface lubricant layer thickness 失效
    磁盘驱动器减小了盘表面润滑剂层厚度的变化

    公开(公告)号:US20050078401A1

    公开(公告)日:2005-04-14

    申请号:US10683811

    申请日:2003-10-09

    CPC分类号: G11B19/28 G11B19/04

    摘要: A disk drive having a layer of lubricant on a disk surface, where an undesirable lubricant layer thickness modulation is reduced by varying ω/f during operation of the disk drive. Here ω is the angular velocity of the disk and f is a resonant frequency of a head assembly containing the head. In this manner, the amplitude of the lubricant thickness modulation is decreased, improving disk drive performance. The ratio ω/f is preferably varied by varying the disk angular velocity ω.

    摘要翻译: 一种在盘表面上具有润滑剂层的磁盘驱动器,其中通过在磁盘驱动器的操作期间改变ω/ f来减少不期望的润滑剂层厚度调制。 这里,ω是磁盘的角速度,f是包含磁头的磁头组件的共振频率。 以这种方式,润滑剂厚度调制的幅度减小,从而提高磁盘驱动性能。 比值ω/ f优选通过改变盘角速度ω而变化。

    Corrosion-resistant bit patterned media (BPM) and discrete track media (DTM) and methods of production thereof
    13.
    发明授权
    Corrosion-resistant bit patterned media (BPM) and discrete track media (DTM) and methods of production thereof 有权
    耐腐蚀位图案介质(BPM)和离散轨道介质(DTM)及其生产方法

    公开(公告)号:US08717710B2

    公开(公告)日:2014-05-06

    申请号:US13466970

    申请日:2012-05-08

    IPC分类号: G11B5/667 G11B5/82

    摘要: In one embodiment, a magnetic recording medium includes a magnetic recording layer including a magnetic material characterized by having convex and concave portions, the convex portions acting as magnetic regions, a nonmagnetic material positioned within each concave portion of the magnetic material which act as nonmagnetic regions that separate the magnetic regions, an organic material layer which exhibits a corrosion-inhibiting characteristic with respect to cobalt or cobalt alloy positioned on a nonmagnetic region side of each concave portion, and an oxide layer and/or hydroxide layer positioned adjacent the organic material layer on a magnetic region side of each concave portion of the magnetic material. In another embodiment, the magnetic recording medium may be a patterned recording layer having a protective film, and the oxide layer and/or hydroxide layer may be positioned at least in defect portions of the protective film.

    摘要翻译: 在一个实施例中,磁记录介质包括磁记录层,该磁记录层包括磁性材料,其特征在于具有凸部和凹部,凸部作为磁区,位于磁性材料的每个凹部内的非磁性材料作为非磁性区 分离磁性区域,相对于位于每个凹部的非磁性区域侧的钴或钴合金表现出腐蚀抑制特性的有机材料层和邻近有机材料层定位的氧化物层和/或氢氧化物层 在磁性材料的每个凹部的磁性区域侧。 在另一个实施例中,磁记录介质可以是具有保护膜的图案化记录层,并且氧化物层和/或氢氧化物层可至少位于保护膜的缺陷部分中。

    Magnetic media and magnetic recording devices using fluorine compounds
    14.
    发明授权
    Magnetic media and magnetic recording devices using fluorine compounds 有权
    使用氟化合物的磁介质和磁记录装置

    公开(公告)号:US08628869B2

    公开(公告)日:2014-01-14

    申请号:US13361896

    申请日:2012-01-30

    IPC分类号: G11B5/66

    摘要: According to one embodiment, a lubricant includes a perfluoropolyether having a chemical structure of: wherein Rf is at least one of: —CF2O(CF2CF2O)m(CF2O)nCF2— and —CF2CF2O(CF2CF2CF2O)kCF2CF2—, with m representing 0 or a positive integer, n representing 0 or a positive integer, and k representing 0 or a positive integer, and wherein R1 to R4 are selected from a group consisting of —H or with at least one of R1 to R4 being

    摘要翻译: 根据一个实施方案,润滑剂包括具有以下化学结构的全氟聚醚:其中Rf为至少一种:-CF 2 O(CF 2 CF 2 O)m(CF 2 O)n CF 2 - 和-CF 2 CF 2 O(CF 2 CF 2 CF 2 O)k CF 2 CF 2 - ,其中m表示0或 正整数,n表示0或正整数,k表示0或正整数,并且其中R 1至R 4选自-H或与R 1至R 4中的至少一个为

    System, method and apparatus for pattern clean-up during fabrication of patterned media using forced assembly of molecules
    15.
    发明授权
    System, method and apparatus for pattern clean-up during fabrication of patterned media using forced assembly of molecules 失效
    使用强制组装分子的图案化介质制造期间图案清理的系统,方法和装置

    公开(公告)号:US08481245B2

    公开(公告)日:2013-07-09

    申请号:US13333109

    申请日:2011-12-21

    IPC分类号: G03F7/20

    摘要: A pattern clean-up for fabrication of patterned media using a forced assembly of molecules is disclosed. E-beam lithography is initially used to write the initial patterned bit media structures, which have size and positioning errors. Nano-sized protein molecules are then forced to assemble of on top of the bits. The protein molecules have a very uniform size distribution and assemble into a lattice structure above the e-beam patterned areas. The protein molecules reduce the size and position errors in e-beam patterned structures. This process cleans the signal from the e-beam lithography and lowers the noise in the magnetic reading and writing. This process may be used to fabricate patterned bit media directly on hard disk, or to create a nano-imprint master for mass production of patterned bit media disks.

    摘要翻译: 公开了使用分子的强制组装制造图案化介质的图案清理。 电子束光刻最初用于写入具有尺寸和定位误差的初始图案化的位介质结构。 然后将纳米级蛋白质分子强制装配在顶部的位上。 蛋白质分子具有非常均匀的尺寸分布并且组装成电子束图案区域上方的晶格结构。 蛋白质分子减小电子束图案结构中的尺寸和位置误差。 该过程清除电子束光刻中的信号,并降低磁读取和写入中的噪声。 该过程可用于直接在硬盘上制造图案化的位介质,或者用于创建用于批量生产图案化位媒体盘的纳米压印母版。

    PERPENDICULAR MAGNETIC RECORDING MEDIA HAVING A CAP LAYER FORMED FROM A CoPtCr ALLOY
    16.
    发明申请
    PERPENDICULAR MAGNETIC RECORDING MEDIA HAVING A CAP LAYER FORMED FROM A CoPtCr ALLOY 审中-公开
    具有CoPtCr合金形成的CAP层的全磁性记录介质

    公开(公告)号:US20100073813A1

    公开(公告)日:2010-03-25

    申请号:US12233959

    申请日:2008-09-19

    CPC分类号: G11B5/66 G11B5/65

    摘要: Perpendicular magnetic recording (PMR) media and methods of fabricating PMR media are described. The PMR media includes, among other layers, a perpendicular magnetic recording layer and a cap layer that are exchange coupled. The magnetic recording layer and the cap layer may be exchange coupled through direct contact, or may be exchange coupled over a coupling layer. In either embodiment, the cap layer is formed from a CoPtCr alloy having a concentration of Cr in the range of about 15-22 at %.

    摘要翻译: 描述了垂直磁记录(PMR)介质和制造PMR介质的方法。 除了其它层之外,PMR介质包括交换耦合的垂直磁记录层和盖层。 磁记录层和盖层可以通过直接接触交换耦合,或者可以通过耦合层交换耦合。 在任一实施例中,盖层由Cr浓度在约15-22at%范围内的CoPtCr合金形成。

    "> Perpendicular Magnetic recording system and medium with high-moment corrosion-resistant
    17.
    发明申请
    Perpendicular Magnetic recording system and medium with high-moment corrosion-resistant "soft" underlayer (SUL) 审中-公开
    垂直磁记录系统和高强度耐腐蚀“软”底层(SUL)

    公开(公告)号:US20090213494A1

    公开(公告)日:2009-08-27

    申请号:US12387091

    申请日:2009-04-27

    IPC分类号: G11B5/127 G11B5/66 G11B5/65

    CPC分类号: G11B5/667 G11B5/7379

    摘要: A perpendicular magnetic recording disk has a soft magnetic underlayer (SUL) that has high corrosion resistance as well as high moment. The material of the SUL is an alloy comprising Co, Fe, X, and Y; where X is Ta or Nb, Y is Zr or Hf, and the combined amount of X and Y present in the alloy is between about 10 and 20 atomic percent. The atomic ratio of Co to Fe in the alloy is between about 90:10 to 10:90, preferably between about 25:75 and 35:65. The SUL may be a single-layer SUL or a multilayer SUL formed of multiple soft magnetic layers separated by an interlayer film or films.

    摘要翻译: 垂直磁记录盘具有高耐蚀性和高力矩的软磁性底层(SUL)。 SUL的材料是包括Co,Fe,X和Y的合金; 其中X是Ta或Nb,Y是Zr或Hf,合金中存在的X和Y的组合量在约10和20原子%之间。 合金中Co与Fe的原子比为约90:10至10:90,优选约25:75至35:65。 SUL可以是由层间膜或膜分离的多个软磁层形成的单层SUL或多层SUL。

    Soft underlayer for perpendicular media with mechanical stability and corrosion resistance
    18.
    发明申请
    Soft underlayer for perpendicular media with mechanical stability and corrosion resistance 审中-公开
    用于垂直介质的软底层具有机械稳定性和耐腐蚀性

    公开(公告)号:US20080090106A1

    公开(公告)日:2008-04-17

    申请号:US11580648

    申请日:2006-10-13

    IPC分类号: G11B5/66

    CPC分类号: G11B5/667

    摘要: A perpendicular magnetic recording disk has a granular cobalt alloy recording layer (RL) containing on the “soft” magnetic underlayer (SUL). The SUL is doped with judiciously chosen elements or alloys or is capped or intercalated with said elements or metal alloy layers. The resulting disk and the SUL in particular has good recording properties, improved mechanical strength and improved corrosion resistance over a comparable disk without the doping or thin layers.

    摘要翻译: 垂直磁记录盘具有包含在“软”磁性底层(SUL)上的颗粒状钴合金记录层(RL)。 SUL掺杂有明智选择的元素或合金,或者被封盖或嵌入所述元件或金属合金层。 所得到的盘和SUL特别具有良好的记录性能,改善的机械强度和在不具有掺杂或薄层的相当的盘上提高的耐腐蚀性。