公开(公告)号：US08665549B2

公开(公告)日：2014-03-04

申请号：US13249041

申请日：2011-09-29

申请人： Thomas R. Albrecht ,  Toshiki Hirano ,  Tetsuo Semba ,  Xiaotian Sun

发明人： Thomas R. Albrecht ,  Toshiki Hirano ,  Tetsuo Semba ,  Xiaotian Sun

IPC分类号： G11B21/02 ,  G11B5/82

CPC分类号： G11B5/59688 ,  G11B5/59655

摘要： A magnetic data storage system having a magnetic disk having burst patterns for providing a position error signal (PES) wherein each magnetic burst pattern is offset from an adjacent burst pattern by ¼ track pitch. All of the magnetic bits of the burst patterns can be unipolar magnetized, and the bits of each burst pattern can be aligned with one another in radial and circumferential direction. The magnetic media can be a bit patterned media wherein the magnetic bits of the burst patterns are magnetically isolated portions separated by non-magnetic spaces or non-magnetic material.

摘要翻译： 一种磁数据存储系统，具有具有用于提供位置误差信号（PES）的脉冲串模式的磁盘，其中每个磁脉冲串模式从相邻脉冲串模式偏移1/4声道间距。 突发图案的所有磁位可以是单极磁化的，并且每个突发图案的位可以在径向和圆周方向上彼此对准。 磁介质可以是位图形介质，其中突发图案的磁位是被非磁性空间或非磁性材料隔开的磁隔离部分。

公开(公告)号：US20130083420A1

公开(公告)日：2013-04-04

申请号：US13249041

申请日：2011-09-29

申请人： Thomas R. Albrecht ,  Toshiki Hirano ,  Tetsuo Semba ,  Xiaotian Sun

发明人： Thomas R. Albrecht ,  Toshiki Hirano ,  Tetsuo Semba ,  Xiaotian Sun

IPC分类号： G11B15/52 ,  G11B5/82

CPC分类号： G11B5/59688 ,  G11B5/59655

摘要： A magnetic data storage system having a magnetic disk having burst patterns for providing a position error signal (PES) wherein each magnetic burst pattern is offset from an adjacent burst pattern by ¼ track pitch. All of the magnetic bits of the burst patterns can be unipolar magnetized, and the bits of each burst pattern can be aligned with one another in radial and circumferential direction. The magnetic media can be a bit patterned media wherein the magnetic bits of the burst patterns are magnetically isolated portions separated by non-magnetic spaces or non-magnetic material.

摘要翻译： 一种磁数据存储系统，具有具有用于提供位置误差信号（PES）的脉冲串模式的磁盘，其中每个磁脉冲串模式从相邻脉冲串模式偏移1/4声道间距。 突发图案的所有磁位可以是单极磁化的，并且每个突发图案的位可以在径向和圆周方向上彼此对准。 磁介质可以是位图形介质，其中突发图案的磁位是被非磁性空间或非磁性材料隔开的磁隔离部分。

公开(公告)号：US08786969B2

公开(公告)日：2014-07-22

申请号：US13251031

申请日：2011-09-30

申请人： Prakash Kasiraj ,  Thomas R. Albrecht

发明人： Prakash Kasiraj ,  Thomas R. Albrecht

IPC分类号： G11B20/10

CPC分类号： G11B5/012 ,  G11B5/746

摘要： In one embodiment, a magnetic data storage system includes a bit patterned magnetic medium, wherein centers of bits in adjacent data tracks do not lie on a common line in a cross-track direction, a magnetic head having a writer element having a width greater than a width of a data track in a track width direction adapted for writing data successively to at least two adjacent data tracks of the magnetic medium, and a reader element having a width larger than the width of a data track in the track width direction adapted for reading data concurrently from the at least two adjacent data tracks of the magnetic medium in a single pass, a drive mechanism for passing the magnetic medium over the magnetic head, and a controller electrically coupled to the magnetic head for controlling operation of the magnetic head.

摘要翻译： 在一个实施例中，磁数据存储系统包括位图形磁介质，其中相邻数据磁道中的位中心不位于交叉磁道方向上的公共线上，磁头具有写入器元件，宽度大于 适于将数据连续地写入磁介质的至少两个相邻数据轨道的轨道宽度方向上的数据轨道的宽度，以及宽度大于轨道宽度方向上的数据轨道的宽度的读取器元件， 在单次通过中从磁介质的至少两个相邻数据轨道同时读取数据，用于使磁介质通过磁头的驱动机构，以及电耦合到磁头的控制器，用于控制磁头的操作。

公开(公告)号：US08501022B2

公开(公告)日：2013-08-06

申请号：US13287761

申请日：2011-11-02

申请人： Thomas R. Albrecht ,  Elizabeth Ann Dobisz ,  Guoliang Liu ,  Ricardo Ruiz ,  Gabriel Zeltzer

发明人： Thomas R. Albrecht ,  Elizabeth Ann Dobisz ,  Guoliang Liu ,  Ricardo Ruiz ,  Gabriel Zeltzer

IPC分类号： B44C1/22

CPC分类号： B82Y10/00 ,  G11B5/746 ,  G11B5/855 ,  G11B5/865

摘要： A method for making a master disk for nanoimprinting patterned-media magnetic recording disks has patterns for both the data islands and the nondata regions. The method uses guided self-assembly of a block copolymer (BCP) to form patterns of generally radial lines and/or generally concentric rings as well as patterns of gap regions of one of the BCP components. The pattern of lines and/or rings have the BCP components aligned as lamellae perpendicular to the substrate, while the pattern of gap regions has the BCP components aligned as lamellae parallel to the substrate. One of the BCP components is removed, leaving the other BCP component as an etch mask to fabricate either the final master disk or two separate molds that are then used to fabricate the master disk.

摘要翻译： 用于制造用于纳米压印图案化介质磁记录盘的母盘的方法具有用于数据岛和非数据区的图案。 该方法使用嵌段共聚物（BCP）的引导自组装形成大体上径向线和/或大致同心环的图案以及一种BCP组分的间隙区域的图案。 线和/或环的图案具有垂直于衬底的薄片对准的BCP组分，而间隙区域的图案将BCP组分排列成平行于衬底的薄片。 BCP组件中的一个被去除，另一个BCP组件作为蚀刻掩模来制造最终的主磁盘或两个单独的模具，然后用于制造主磁盘。

公开(公告)号：US20130084468A1

公开(公告)日：2013-04-04

申请号：US13251125

申请日：2011-09-30

申请人： Thomas R. Albrecht ,  Xing-Cai Guo

发明人： Thomas R. Albrecht ,  Xing-Cai Guo

IPC分类号： G11B5/65 ,  B05D5/12

CPC分类号： G11B5/851 ,  C23C14/024 ,  C23C14/08 ,  C23C14/10 ,  C23C14/12 ,  C23C14/14 ,  C23C14/34 ,  G11B5/65 ,  G11B5/855

摘要： A method for manufacturing a bit patterned magnetic media for magnetic data recording. The method includes selectively depositing a self assembled monolayer over a seed layer and then oxidizing the deposited self assembled monolayer. The self-assembled monolayer can be deposited by use of a stamp to form a pattern covering areas where a non-magnetic segregant (such as an oxide) is to be formed and openings where a magnetic material is to be formed. A magnetic alloy and a segregant (such as an oxide) are then co-sputtered. The magnetic alloy grows only or selectively over the seed layer, whereas the segregant grows only or selectively over the oxidized self-assembled monolayer.

摘要翻译： 一种用于制造用于磁数据记录的位图形磁介质的方法。 该方法包括在种子层上选择性地沉积自组装单层，然后氧化沉积的自组装单层。 可以通过使用印模来沉积自组装单层以形成覆盖要形成非磁性分离器（例如氧化物）的区域的图案，并且形成磁性材料的开口。 然后将磁性合金和分离剂（例如氧化物）共溅射。 磁性合金仅在种子层上生长或选择性地生长，而分离器在氧化的自组装单层上仅生长或选择性生长。

公开(公告)号：US20130081937A1

公开(公告)日：2013-04-04

申请号：US13370131

申请日：2012-02-09

申请人： Thomas R. Albrecht

发明人： Thomas R. Albrecht

IPC分类号： C23C14/34 ,  C01B13/14 ,  B01J19/12

CPC分类号： H01F41/34 ,  B82Y40/00 ,  C01B13/14 ,  C23C14/0036 ,  C23C14/024 ,  C23C14/028 ,  C23C14/08 ,  C23C14/14 ,  G11B5/65 ,  G11B5/746 ,  G11B5/855 ,  H01F1/009 ,  H01F10/123

摘要： A method for manufacturing a bit patterned magnetic media for magnetic data recording. The method includes patterning a topography that includes an array of raised regions separated by a recessed portion. The array can be patterned by micro-printing using a stamp that has raised islands. The raised regions can have a height of 1 to 5 nm as measured from the recessed region. A magnetic alloy and a non-magnetic segregant are then co-sputtered. The magnetic alloy preferentially grows over the raised portions and the non-magnetic segregant grow preferentially over the recessed region between the raised portions.

摘要翻译： 一种用于制造用于磁数据记录的位图形磁介质的方法。 该方法包括图案化，其包括由凹部分开的凸起区域的阵列。 该阵列可以通过使用凸起凸起的印模进行微印而进行图案化。 凸起区域可以具有从凹陷区域测量的1至5nm的高度。 然后将磁性合金和非磁性分离器共溅射。 磁性合金优先生长在凸起部分之上，非磁性分离器优先在凸起部分之间的凹陷区域上生长。

公开(公告)号：US20110215070A1

公开(公告)日：2011-09-08

申请号：US13108515

申请日：2011-05-16

申请人： Thomas R. Albrecht ,  Xiao Z. Wu ,  Henry Hung Yang

发明人： Thomas R. Albrecht ,  Xiao Z. Wu ,  Henry Hung Yang

IPC分类号： B29C33/42 ,  B05D5/12

CPC分类号： G11B5/855 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/82 ,  G11B5/865

摘要： Methods of defining servo patterns and data patterns for forming patterned magnetic media are described. For one method, a lithographic process is performed to define a servo pattern in servo regions on a substrate. The lithographic process also defines a first data pattern in data regions of the substrate. The first data pattern is then transferred to (i.e., etched into) the data regions. Self-assembly structures are then formed on the data pattern in the data regions to define a second data pattern. The servo pattern is then transferred to the servo regions and the second data pattern is transferred to the data regions. Thus, the servo pattern is defined through lithographic processes while the data pattern is defined by a combination of lithographic processes and self-assembly.

摘要翻译： 描述了定义用于形成图案化磁性介质的伺服图案和数据图案的方法。 对于一种方法，执行光刻处理以在衬底上的伺服区域中定义伺服图案。 光刻工艺还定义了衬底的数据区域中的第一数据模式。 然后将第一数据模式转移到（即蚀刻）数据区。 然后在数据区域中的数据模式上形成自组装结构以定义第二数据模式。 然后将伺服模式传送到伺服区域，并将第二数据模式传送到数据区域。 因此，通过光刻工艺定义伺服图案，同时通过光刻工艺和自组装的组合来定义数据图案。

公开(公告)号：US20110212347A1

公开(公告)日：2011-09-01

申请号：US13103143

申请日：2011-05-09

申请人： Thomas R. Albrecht ,  Zvonimir Z. Bandic ,  Olav Hellwig ,  Gabriel Zeltzer

发明人： Thomas R. Albrecht ,  Zvonimir Z. Bandic ,  Olav Hellwig ,  Gabriel Zeltzer

IPC分类号： G11B5/65 ,  C23C14/34

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 。

公开(公告)号：US20100091408A1

公开(公告)日：2010-04-15

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： G11B5/48

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。

公开(公告)号：US20100061018A1

公开(公告)日：2010-03-11

申请号：US12209089

申请日：2008-09-11

申请人： Thomas R. Albrecht ,  Manfred Ernst Schabes ,  Barry Cushing Stipe ,  Gabriel Zeltzer

发明人： Thomas R. Albrecht ,  Manfred Ernst Schabes ,  Barry Cushing Stipe ,  Gabriel Zeltzer

IPC分类号： G11B5/82

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。