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1.发明授权公开(公告)号：US08048546B2
公开(公告)日：2011-11-01
申请号：US12639975
申请日：2009-12-16
IPC分类号： G11B5/66
摘要： A continuous-media perpendicular magnetic recording disk with an oxide-containing granular Co alloy recording layer (RL) having minimal grain size dispersion has an ordered nucleation layer (ONL) formed below RL. The ONL has ordered nucleation sites arranged in a generally repetitive pattern. The nucleation sites are generally surrounded by non-nucleation regions of a different material than the nucleation sites. The Co-alloy grains of the subsequently deposited RL grow on the nucleation sites and the oxide of the RL become generally segregated on the non-nucleation regions. The ordered nucleation sites may be formed of a Ru-containing material and the non-nucleation regions may be formed of an oxide. The ONL is formed by nanoimprint lithography, preferably by a master mold fabricated with a method using self-assembling block copolymers for creating periodic nanometer scale features.
摘要翻译： 具有最小晶粒尺寸分散体的具有含氧化物的颗粒状钴合金记录层（RL）的连续介质垂直磁记录盘具有形成在RL以下的有序成核层（ONL）。 ONL已经订购了以一般重复模式排列的成核位点。 成核位点通常被与成核位点不同的材料的非成核区包围。 随后沉积的RL的Co合金晶粒生长在成核位点，并且RL的氧化物通常在非成核区域上分离。 有序的成核位点可以由含Ru的材料形成，并且非成核区域可以由氧化物形成。 ONL由纳米压印光刻形成，优选通过使用自组装嵌段共聚物制备周期性纳米尺度特征的方法制造的母模。
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2.发明授权Hard disk drive with disk separator for creating axial gaps between disks for access by read/write heads 有权带磁盘分离器的硬盘驱动器，用于在磁盘之间创建用于读/写磁头访问的轴向间隙公开(公告)号：US07986491B2
公开(公告)日：2011-07-26
申请号：US12248117
申请日：2008-10-09
申请人： Thomas R Albrecht , Hal J. Rosen
发明人： Thomas R Albrecht , Hal J. Rosen
IPC分类号： G11B17/08
CPC分类号： G11B17/26 , G11B17/021
摘要： A hard disk drive (HDD) has a stack of disks mounted on a rotatable spindle with the disks being movable axially, i.e., in a direction parallel to the axis of rotation of the spindle. A disk separator is located inside the spindle and separates axially-adjacent disks in a pair to create an axial gap. Any pair of axially-adjacent disks can be separated so that different axial gaps are created. A single head-arm assembly with at least one and preferably two read write heads is movable axially so that it can be rotated by the rotary actuator into any one of the axial gaps. The read/write heads can thus access data on the disk surfaces in the axial gaps. When it is desired to have the disk separator create an new axial gap and thus a new pair of disk surfaces to be accessed, the actuator rotates the head-arm assembly away from the outer perimeters of the disks and moves the read/write heads onto a head support structure that supports the read/write heads off the disks.
摘要翻译： 硬盘驱动器（HDD）具有安装在可旋转主轴上的盘堆，盘可以轴向移动，即在与主轴的旋转轴线平行的方向上移动。 磁盘分离器位于主轴内部并且分离成一对轴向相邻的磁盘以产生轴向间隙。 可以分离任何一对轴向相邻的盘，使得产生不同的轴向间隙。 具有至少一个并且优选两个读写头的单个头臂组件可轴向移动，使得其可以由旋转致动器旋转到任何一个轴向间隙中。 因此，读/写头可以在轴向间隙中访问磁盘表面上的数据。 当希望磁盘分离器产生新的轴向间隙并且因此产生一对新的待访问的盘表面时，致动器将头臂组件旋转远离盘的外周，并将读/写头移动到 一个头部支持结构，支持磁盘上的读/写磁头。
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3.发明授权Patterned-media perpendicular magnetic recording disk with servo regions having magnetized servo pillars and oppositely-magnetized servo trenches 有权具有磁化伺服柱和相对磁化的伺服沟槽的伺服区域的图案化介质垂直磁记录盘公开(公告)号：US08252153B2
公开(公告)日：2012-08-28
申请号：US13103143
申请日：2011-05-09
CPC分类号： G11B5/82 , B82Y10/00 , C23C14/04 , C23C14/16 , G11B5/59688 , G11B5/743 , G11B5/746 , G11B5/855
摘要： A patterned perpendicular magnetic recording disk has a pre-patterned disk substrate with pillars and trenches arranged in data regions and servo regions. In the data regions, the height of the data pillars is equal to or greater than the spacing between the data pillars, while in the servo regions the height of the servo pillars is less than the spacing between the servo pillars. A magnetic recording material with perpendicular magnetic anisotropy is deposited over the entire disk substrate, which results in magnetic material on the tops of the data pillars and servo pillars and in the servo trenches. The material in the data trenches is either nonmagnetic or discontinuous. After the application of a high DC magnetic field in one perpendicular direction and a low DC magnetic field in the opposite direction, the resulting disk has patterned servo sectors with servo pillars all magnetized in the same perpendicular direction and servo trenches magnetized in the opposite perpendicular direction.
摘要翻译： 图案化的垂直磁记录盘具有预先图案化的盘基片，其具有布置在数据区域和伺服区域中的柱状物和沟槽。 在数据区域中，数据柱的高度等于或大于数据柱之间的间距，而在伺服区域中，伺服柱的高度小于伺服柱之间的间距。 具有垂直磁各向异性的磁记录材料沉积在整个盘基底上，这导致数据柱和伺服柱顶部以及伺服槽中的磁性材料。 数据沟槽中的材料是非磁性的或不连续的。 在相反方向上在一个垂直方向和低DC磁场上施加高DC磁场之后，所得到的盘具有带有伺服柱的图案化伺服扇区，其中所有伺服柱都在相同的垂直方向上被磁化，并且伺服沟槽在相反的垂直方向上被磁化 。
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4.发明授权Thermal assisted recording (TAR) disk drive capable of controlling the write pulses 有权能够控制写入脉冲的热辅助记录（TAR）磁盘驱动器公开(公告)号：US07852587B2
公开(公告)日：2010-12-14
申请号：US12209089
申请日：2008-09-11
IPC分类号： G11B5/02
CPC分类号： G11B5/314 , B82Y10/00 , G11B5/4866 , G11B5/59616 , G11B5/59677 , G11B5/743 , G11B5/82
摘要： A patterned-media magnetic recording disk drive uses an optical system for accurately clocking the write data. The disk has concentric data tracks patterned into discrete magnetizable data islands with nonmagnetic spaces between the islands. As the disk rotates, a radiation source directs near-field radiation to the islands and spaces, and a radiation detector receives reflected radiation. The radiation is directed from the source through an optical channel or waveguide on the air-bearing slider that supports the read and write heads. The optical channel or waveguide has a near-field transducer at the disk-facing surface of the slider where the near-field radiation exits and reflected radiation returns. The reflected optical power varies depending on whether the near-field transducer couples to an island or a space, so the radiation detector output signal represents the frequency and phase of the islands as the disk rotates. The write clock that controls write pulses to the write head is responsive to the radiation detector output signal, so the frequency and phase of the write clock signal can be matched to the frequency and phase of the islands as the disk rotates.
摘要翻译： 图形媒体磁记录磁盘驱动器使用光学系统来准确地计时写入数据。 磁盘具有图案化成离散的可磁化数据岛之间的同心数据轨道，岛之间具有非磁性空间。 当盘旋转时，辐射源将近场辐射引导到岛和空间，并且辐射检测器接收反射的辐射。 辐射从源通过支撑读写头的含气滑块上的光通道或波导引导。 光通道或波导在滑块的面向盘的表面处具有近场换能器，其中近场辐射离开并且反射辐射返回。 反射的光功率取决于近场换能器耦合到岛还是空间，因此辐射检测器输出信号表示盘旋转时岛的频率和相位。 将写入脉冲控制到写入头的写入时钟响应于辐射检测器输出信号，因此当时间盘旋转时，写时钟信号的频率和相位可以与岛的频率和相位匹配。
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5.发明申请PATTERNED-MEDIA PERPENDICULAR MAGNETIC RECORDING DISK WITH SERVO REGIONS HAVING MAGNETIZED SERVO PILLARS AND OPPOSITELY-MAGNETIZED SERVO TRENCHES 有权带有伺服区域的磁性记录磁盘记录磁盘，具有磁化的伺服柱和相对磁化的伺服轨道公开(公告)号：US20100246062A1
公开(公告)日：2010-09-30
申请号：US12412548
申请日：2009-03-27
CPC分类号： G11B5/82 , B82Y10/00 , C23C14/04 , C23C14/16 , G11B5/59688 , G11B5/743 , G11B5/746 , G11B5/855
摘要： A patterned perpendicular magnetic recording disk has a pre-patterned disk substrate with pillars and trenches arranged in data regions and servo regions. In the data regions, the height of the data pillars is equal to or greater than the spacing between the data pillars, while in the servo regions the height of the servo pillars is less than the spacing between the servo pillars. A magnetic recording material with perpendicular magnetic anisotropy is deposited over the entire disk substrate, which results in magnetic material on the tops of the data pillars and servo pillars and in the servo trenches. The material in the data trenches is either nonmagnetic or discontinuous. After the application of a high DC magnetic field in one perpendicular direction and a low DC magnetic field in the opposite direction, the resulting disk has patterned servo sectors with servo pillars all magnetized in the same perpendicular direction and servo trenches magnetized in the opposite perpendicular direction.
摘要翻译： 图案化的垂直磁记录盘具有预先图案化的盘基片，其具有布置在数据区域和伺服区域中的柱状物和沟槽。 在数据区域中，数据柱的高度等于或大于数据柱之间的间距，而在伺服区域中，伺服柱的高度小于伺服柱之间的间距。 具有垂直磁各向异性的磁记录材料沉积在整个盘基底上，这导致数据柱和伺服柱顶部以及伺服槽中的磁性材料。 数据沟槽中的材料是非磁性的或不连续的。 在相反方向上在一个垂直方向和低DC磁场上施加高DC磁场之后，所得到的盘具有带有伺服柱的图案化伺服扇区，其中所有伺服柱都在相同的垂直方向上被磁化，并且伺服沟槽在相反的垂直方向上被磁化 。
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6.发明授权Patterned-media perpendicular magnetic recording disk with servo regions having magnetized servo pillars and oppositely-magnetized servo trenches 有权具有磁化伺服柱和相对磁化的伺服沟槽的伺服区域的图案化介质垂直磁记录盘公开(公告)号：US07960044B2
公开(公告)日：2011-06-14
申请号：US12412548
申请日：2009-03-27
IPC分类号： G11B5/66
CPC分类号： G11B5/82 , B82Y10/00 , C23C14/04 , C23C14/16 , G11B5/59688 , G11B5/743 , G11B5/746 , G11B5/855
摘要： A patterned perpendicular magnetic recording disk has a pre-patterned disk substrate with pillars and trenches arranged in data regions and servo regions. In the data regions, the height of the data pillars is equal to or greater than the spacing between the data pillars, while in the servo regions the height of the servo pillars is less than the spacing between the servo pillars. A magnetic recording material with perpendicular magnetic anisotropy is deposited over the entire disk substrate, which results in magnetic material on the tops of the data pillars and servo pillars and in the servo trenches. The material in the data trenches is either nonmagnetic or discontinuous. After the application of a high DC magnetic field in one perpendicular direction and a low DC magnetic field in the opposite direction, the resulting disk has patterned servo sectors with servo pillars all magnetized in the same perpendicular direction and servo trenches magnetized in the opposite perpendicular direction.
摘要翻译： 图案化的垂直磁记录盘具有预先图案化的盘基片，其具有布置在数据区域和伺服区域中的柱状物和沟槽。 在数据区域中，数据柱的高度等于或大于数据柱之间的间距，而在伺服区域中，伺服柱的高度小于伺服柱之间的间距。 具有垂直磁各向异性的磁记录材料沉积在整个盘基底上，这导致数据柱和伺服柱顶部以及伺服槽中的磁性材料。 数据沟槽中的材料是非磁性的或不连续的。 在相反方向上在一个垂直方向和低DC磁场上施加高DC磁场之后，所得到的盘具有带有伺服柱的图案化伺服扇区，其中所有伺服柱都在相同的垂直方向上被磁化，并且伺服沟槽在相反的垂直方向上被磁化 。
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7.发明授权Patterned media magnetic recording disk drive with write clock phase adjustment for write head track misregistration 有权带图形的介质磁记录磁盘驱动器，具有写入时钟相位调整用于写入磁头轨迹重合公开(公告)号：US07848048B1
公开(公告)日：2010-12-07
申请号：US12477765
申请日：2009-06-03
IPC分类号： G11B21/02
CPC分类号： G11B5/59627 , B82Y10/00 , G11B5/743
摘要： A patterned-media magnetic recording disk drive has compensation for write head track misregistration (TMR) from the track centerline. As the disk rotates, the read head detects angularly spaced servo sectors and generates a position error signal (PES) which is used by the servo control system to maintain the read head on track. As the disk rotates, the read head also detects angularly spaced synchronization marks, which are used to control the write clock so that magnetization reversal of the magnetic write field from the write head is synchronized with the position of the data islands. If there is TMR of the write head, there will be an effective shift of Δφ in the timing of when the center of the data islands pass through the write field. The disk drive includes write clock phase adjustment circuitry that correlates the PES with Δφ to compensate for TMR of the write head.
摘要翻译： 图案介质磁记录磁盘驱动器对从轨道中心线的写入磁头轨迹重合失调（TMR）进行补偿。 当磁盘旋转时，读取头检测角度间隔的伺服扇区，并产生位置误差信号（PES），伺服控制系统使用该位置误差信号来维持读取头的轨迹。 当盘旋转时，读取头还检测角度间隔的同步标记，其用于控制写入时钟，使得写入磁头的磁性写入磁场的磁化反转与数据岛的位置同步。 如果有写头的TMR，将会有一个有效的转移＆Dgr＆ 在数据岛的中心通过写入场的时刻。 磁盘驱动器包括写时钟相位调整电路，其将PES与＆Dgr＆amp; 以补偿写入头的TMR。
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