公开(公告)号：US20120099220A1

公开(公告)日：2012-04-26

申请号：US12909783

申请日：2010-10-21

申请人： Ichiro Tamai ,  Yotsuo Yahisa ,  Akemi Hirotsune

发明人： Ichiro Tamai ,  Yotsuo Yahisa ,  Akemi Hirotsune

IPC分类号： G11B21/02 ,  B05D5/12 ,  G11B5/706

CPC分类号： G11B5/7325 ,  G11B5/7379

摘要： In one embodiment, a perpendicular magnetic recording medium includes a crystalline seed layer having a pseudo-hcp structure with stacking faults formed above a soft magnetic underlayer, a first interlayer comprising Ru and one of W, Ta, Mo, and Nb formed above the crystalline seed layer, a second interlayer formed above the first interlayer, and a magnetic recording layer formed above the second interlayer. The first interlayer has a W concentration between about 32 at % and 50 at %, Mo in a concentration between about 36 at % and 52 at %, Ta in a concentration between about 20 at % and 30 at %, or Nb in a concentration between about 7 at % and 30 at %. In another embodiment, a system includes a recording medium as described above, a magnetic head for reading from and/or writing to the medium, a head slider for supporting the head, and a control unit coupled to the head.

摘要翻译： 在一个实施例中，垂直磁记录介质包括具有形成在软磁性底层上方的堆垛层错的伪hcp结构的结晶种子层，包含Ru和在晶体上形成的W，Ta，Mo和Nb中的一个的第一中间层 晶种层，形成在第一中间层上方的第二中间层和形成在第二中间层上方的磁记录层。 第一中间层具有约32at％至50at％的W浓度，浓度在约36at％至52at％之间的Mo，浓度在约20at％至30at％之间的Ta或浓度为Nb 在约7at％和30at％之间。 在另一个实施例中，系统包括如上所述的记录介质，用于从介质读取和/或写入介质的磁头，用于支撑磁头的磁头滑块以及耦合到磁头的控制单元。

公开(公告)号：US20110141613A1

公开(公告)日：2011-06-16

申请号：US12948072

申请日：2010-11-17

申请人： Koji Sakamoto ,  Koichi Nishioka

发明人： Koji Sakamoto ,  Koichi Nishioka

IPC分类号： G11B5/33 ,  G11B21/02 ,  B05D5/00

CPC分类号： G11B5/3909 ,  B82Y10/00 ,  B82Y25/00 ,  B82Y40/00 ,  G01R33/098 ,  G11B5/3163 ,  G11B5/3906 ,  H01F10/132 ,  H01F10/3254 ,  H01F10/3272 ,  H01F41/307 ,  H01L43/08 ,  H01L43/10 ,  H01L43/12 ,  Y10T29/49034

摘要： According to one embodiment, a method for producing a Tunneling Magnetoresistance (TMR) read head includes forming a fixed layer, forming an insulating barrier layer above the fixed layer, forming a free layer above the insulating barrier layer, and annealing the free layer, the fixed layer, and the insulating barrier layer. The fixed layer includes a first ferromagnetic layer having a CoxFe (0≦x≦15) interface layer and a Co-based amorphous metallic layer between the CoxFe interface layer and the insulating barrier layer, an antiparallel coupling layer below the first ferromagnetic layer, and a second ferromagnetic layer below the antiparallel coupling layer. In another embodiment, a TMR read head includes the layers described above, and may be included in a magnetic data storage system.

摘要翻译： 根据一个实施例，一种用于制造隧道磁阻（TMR）读头的方法包括形成固定层，在固定层上形成绝缘阻挡层，在绝缘阻挡层上方形成自由层，退火自由层， 固定层和绝缘阻挡层。 该固定层包括具有CoxFe（0＆amp; nlE; x＆nlE; 15）界面层的第一铁磁层和在CoxFe界面层和绝缘阻挡层之间的Co基非晶金属层，在第一铁磁层下面​​的反向平行耦合层，以及 位于反平行耦合层下面的第二铁磁层。 在另一个实施例中，TMR读取头包括上述层，并且可以包括在磁数据存储系统中。

公开(公告)号：US20110007431A1

公开(公告)日：2011-01-13

申请号：US12884080

申请日：2010-09-16

申请人： Patrick M. Braganca ,  Bruce A. Gurney

发明人： Patrick M. Braganca ,  Bruce A. Gurney

IPC分类号： G11B5/127

CPC分类号： G11B5/3903 ,  G01R33/098 ,  G01R33/1284 ,  H01L43/08

摘要： A spin torque oscillator device having a magnetic free layer with a magnetic anisotropy that has a component that is oriented perpendicular to a direction of an applied magnetic field. The spin torque oscillator device includes a magnetic reference layer, a magnetic free layer and a non-magnetic layer sandwiched there-between. A component of the magnetic anisotropy of the free layer can be oriented perpendicular to a magnetization of the reference layer, and this orientation relative to the magnetization of the reference layer can be either in lieu of or in addition to its orientation relative to the applied magnetic field. The magnetic anisotropy cants the magnetization of the free layer which would otherwise be oriented antiparallel with the magnetization of the reference layer. The magnetic anisotropy in the free layer improves performance of the spin torque sensor by reducing noise.

摘要翻译： 具有具有磁各向异性的磁性自由层的自旋扭矩振荡器装置，其具有垂直于施加的磁场方向取向的分量。 自旋扭矩振荡器装置包括磁性参考层，无磁性层和夹在其间的非磁性层。 自由层的磁各向异性的分量可以垂直于参考层的磁化取向，并且相对于参考层的磁化的该取向可以代替或除了其相对于所施加的磁性的取向 领域。 磁各向异性可以使自由层的磁化强度反而与参考层的磁化反平行。 自由层中的磁各向异性通过降低噪声提高了自旋转矩传感器的性能。

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：US07360299B2

公开(公告)日：2008-04-22

申请号：US11097543

申请日：2005-03-31

申请人： Matthew Joseph Carey ,  Jeffrey Robinson Childress ,  Eric Edward Fullerton ,  Stefan Maat

发明人： Matthew Joseph Carey ,  Jeffrey Robinson Childress ,  Eric Edward Fullerton ,  Stefan Maat

IPC分类号： G11B5/127 ,  H04R31/00

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3932 ,  G11B2005/3996 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49048 ,  Y10T29/49052

摘要： A magnetoresistive sensor having an in stack bias layer with an engineered magnetic anisotropy in a direction parallel with the medium facing surface. The in-stack bias layer may be constructed of CoPt, CoPtCr or some other magnetic material and is deposited over an underlayer that has been ion beam etched. The ion beam etch has been performed at an angle with respect to normal in order to form anisotropic roughness in form of oriented ripples or facets. The anisotropic roughness induces a uniaxial magnetic anisotropy substantially parallel to the medium facing surface in the hard magnetic in-stack bias layer deposited thereover.

摘要翻译： 磁阻传感器具有在与介质面向表面平行的方向上具有工程磁各向异性的堆叠偏置层。 叠层偏置层可以由CoPt，CoPtCr或一些其它磁性材料构成，并且沉积在已经被离子束蚀刻的底层上。 已经以相对于正常的角度执行离子束蚀刻，以便形成定向的波纹或小面的各向异性的粗糙度。 各向异性粗糙度在其上沉积的硬磁堆叠偏压层中引起基本平行于面向介质的表面的单轴磁各向异性。

公开(公告)号：US07330336B2

公开(公告)日：2008-02-12

申请号：US11439296

申请日：2006-05-22

申请人： Jih-Shiuan Luo ,  Samuel Wei-san Yuan

发明人： Jih-Shiuan Luo ,  Samuel Wei-san Yuan

IPC分类号： G11B5/03 ,  G11B5/127

CPC分类号： G11B5/314 ,  G11B5/6064

摘要： A magnetic read/write head having a heating element to induce a desired amount of thermal protrusion in the read and write elements to control the fly height of the read and write elements over a magnetic medium. The heating element is connected with circuitry that provides an electrical bias (voltage or current) that switches polarity in order to prevent electromigration, thereby greatly increasing the life of the heating element. The polarity of the heating element can be switched upon the occurrence of a predetermined event such as between read or write events or upon activating deactivating the disk drive device or could be performed at regular, predetermined time intervals. The dual polarity bias could also be provided by applying an AC bias to the heating element.

摘要翻译： 一种具有加热元件的磁读/写头，以在读和写元件中引起期望量的热突起，以通过磁介质控制读和写元件的飞行高度。 加热元件与电路连接，该电路提供切换极性的电偏压（电压或电流），以防止电迁移，从而大大增加了加热元件的寿命。 可以在诸如读取或写入事件之间的预定事件（例如在读取或写入事件之间）或者激活停用磁盘驱动器装置时进行加热元件的极性切换，或者可以以规定的预定时间间隔执行加热元件的极性。 也可以通过向加热元件施加AC偏压来提供双极性偏置。

公开(公告)号：US20070201165A1

公开(公告)日：2007-08-30

申请号：US11710316

申请日：2007-02-22

申请人： Atsushi Kato ,  Kiyonori Shiraki ,  Kouji Yamaguchi

发明人： Atsushi Kato ,  Kiyonori Shiraki ,  Kouji Yamaguchi

IPC分类号： G11B5/60

CPC分类号： G11B5/6005 ,  G11B5/6064

摘要： Embodiments in accordance with the present invention provide a magnetic head slider which includes a magnetic recording/reproducing element and a heater which are formed in an air outflow end surface of a slider. The heater includes a heating portion, terminal portions extending from both ends of the heating portion, and lead portions overlapping the respective terminal portions at an overlap ratio of approximately 50% or more.

摘要翻译： 根据本发明的实施例提供一种磁头滑块，其包括形成在滑块的空气流出端面中的磁记录/再现元件和加热器。 加热器包括加热部分，从加热部分的两端延伸的端子部分和与各个端子部分重叠的引线部分的重叠率为大约50％以上。

公开(公告)号：US20070183081A1

公开(公告)日：2007-08-09

申请号：US11650332

申请日：2007-01-05

申请人： Junzou Noda ,  Shingo Hattori ,  Toshiaki Satoh

发明人： Junzou Noda ,  Shingo Hattori ,  Toshiaki Satoh

IPC分类号： G11B5/596

CPC分类号： G11B5/596 ,  G11B20/182 ,  G11B20/1879 ,  G11B27/36 ,  G11B2020/1823 ,  G11B2220/2516

摘要： Embodiments in accordance with the present invention increase the possibility that a servo track in which servo data is defective may be detected, greatly decreasing the possibility that a write error may occur during use by a user. According to one embodiment of the present invention, a defective area management method for a data storage device is provided. The data storage device comprises a head in which positions of read and write elements differ from each other in the radial direction of a disk. A defective area management method performs positioning of the head by reading out servo data written on the disk using the read element. The defective area management method comprises the steps of performing data write processing by use of the write element with the read element being positioned at a target position at which normal data reading is performed; and registering areas, as an error area, in a data track in which normal data writing is performed using a servo track including the target position if a predetermined error occurs in the data write processing.

摘要翻译： 根据本发明的实施例增加了可以检测到其中伺服数据有缺陷的伺服轨迹的可能性，大大降低了在用户使用期间可能发生写错误的可能性。 根据本发明的一个实施例，提供了一种用于数据存储装置的缺陷区域管理方法。 数据存储装置包括其中读取和写入元件的位置在盘的径向彼此不同的头部。 缺陷区域管理方法通过使用读取的元素读出写在盘上的伺服数据来执行头的定位。 缺陷区域管理方法包括以下步骤：通过使用写入元件执行数据写入处理，读取元件位于进行正常数据读取的目标位置; 以及如果在数据写入处理中发生预定的错误，则在使用包括目标位置的伺服轨迹执行正常数据写入的数据轨道中登记区域作为错误区域。

公开(公告)号：US20060268459A1

公开(公告)日：2006-11-30

申请号：US11439687

申请日：2006-05-23

申请人： Takayoshi Ohtsu ,  Nobumasa Nishiyama

发明人： Takayoshi Ohtsu ,  Nobumasa Nishiyama

IPC分类号： G11B5/60

CPC分类号： G11B5/486 ,  G11B5/314 ,  G11B5/6005 ,  G11B5/607

摘要： Crosstalk from a write signal on wiring on a suspension needs to be reduced since an ESD withstand voltage is decreased due to high sensitivity of a GMR head. In one embodiment, a terminal arrangement on an element-forming surface of a magnetic head slider consists of a ground terminal G, a read terminal R+, a read terminal R−, a write terminal W+ and a write terminal W− in order from the outside. With this terminal arrangement, the wiring order on a suspension consists of a read wire R−, a read wire R+, a ground line G, a write wire W− and a write wire W+ in an arrangement unlike the terminal arrangement. In other words, the ground line G is interposed between the write wires W and the read wires R. In this way, the wiring of the write wire W and the wiring of the read wire R are never arranged adjacently to each other, and further, the ground line G is interposed between the write wires W and the read wires R, thereby reducing crosstalk on the read wires R caused by a writing current with a high frequency which flows in the write wires W.

摘要翻译： 由于GMR磁头的高灵敏度，ESD耐受电压降低，所以需要降低悬架上布线上写信号的串扰。 在一个实施例中，磁头滑块的元件形成表面上的端子装置由接地端子G，读取端子R +，读取端子R-，写入端子W +和写入端子W-按照从 外。 利用该端子装置，与终端装置不同，在悬架上的接线顺序由读线R，读线R +，接地线G，写线W-和写线W +组成。 换句话说，地线G插入在写入线W和读取导线R之间。这样，写入线W和读取的线R的布线的布线将不会彼此相邻布置，并且进一步 接地线G被插入在写入线W和读出导线R之间，从而减少由写入线W中流动的高频写入电流引起的读取线R上的串扰。

公开(公告)号：US20060002012A1

公开(公告)日：2006-01-05

申请号：US10881263

申请日：2004-06-30

申请人： Andre Chan ,  Jr-Yi Shen

发明人： Andre Chan ,  Jr-Yi Shen

IPC分类号： G11B17/02

CPC分类号： G11B33/121 ,  G11B17/0287

摘要： A disk clamp for securing a data storage disk to the hub of a spindle motor in a disk drive prevents the migration of lubricant into sensitive areas of the disk drive. The problem of lubrication migration due to the use and presence of fastener lubricant is resolved by using a rib on a composite disk clamp. The rib strengthens the clamp structure and has a sealing ring. The ring has a semi-circular sectional profile with a flat surface that is used to bond the ring to the rib. The ring has elastic properties that compensate for hub vibration to isolate the disk clamp from the hub, and also provides damping between the hub and the disk clamp.

摘要翻译： 用于将数据存储盘固定到盘驱动器中的主轴电机的轮毂的盘夹防止了润滑剂迁移到磁盘驱动器的敏感区域。 由于使用和存在紧固件润滑剂导致的润滑迁移的问题通过在复合盘夹上使用肋来解决。 肋条加强夹具结构，并具有密封环。 环具有半圆形截面轮廓，其具有用于将环连接到肋的平坦表面。 该环具有补偿轮毂振动以将盘夹与轮毂隔离的弹性特性，并且还在轮毂和盘夹之间提供阻尼。