公开(公告)号：US07177118B2

公开(公告)日：2007-02-13

申请号：US10853631

申请日：2004-05-24

申请人： Hoa Van Do ,  David Margulies ,  Hal J. Rosen ,  Natacha F. Supper

发明人： Hoa Van Do ,  David Margulies ,  Hal J. Rosen ,  Natacha F. Supper

IPC分类号： G11B5/012 ,  G11B5/62

CPC分类号： G11B5/66

摘要： A magnetic recording system uses a magnetic recording medium having a laminated magnetic structure with at least three magnetic layers, wherein the magnetic layers have decreasing intrinsic coercivity H0 with distance from the write head. The write field at the center of each magnetic layer is greater than that layer's H0. The magnetic layers have different compositions and/or thicknesses and thereby different values of H0. The alloys used in the middle and upper magnetic layers are relatively “high-moment” alloys that would not ordinarily be used in magnetic recording media because they have relatively low S0NR, but the overall S0NR of the laminated magnetic structure is improved because of the effect of lamination. The middle and upper magnetic layers can be made substantially thinner, which enables the magnetic layers to be located closer to the write head, thereby exposing each of the magnetic layers to a higher write field.

摘要翻译： 磁记录系统使用具有至少三个磁性层的层叠磁性结构的磁记录介质，其中磁层具有与写入头距离更小的固有矫顽力H 0 0。 每个磁性层的中心处的写入场大于该层的H 0 0。 磁性层具有不同的组成和/或厚度，从而具有不同的H 0 O值。 在中上层磁性层中使用的合金是相对“高力矩”的合金，它们通常不会用于磁记录介质，因为它们具有相对较低的S O N，但总体上S _{0得到改善。 可以使中上层磁性层和上磁性层实质上更薄，这使得磁层能够更靠近写入头位置，从而将每个磁性层暴露于较高的写入场。}

公开(公告)号：US07180710B2

公开(公告)日：2007-02-20

申请号：US10853431

申请日：2004-05-24

申请人： Hoa Van Do ,  David Margulies ,  Hal J. Rosen ,  Natacha F. Supper

发明人： Hoa Van Do ,  David Margulies ,  Hal J. Rosen ,  Natacha F. Supper

IPC分类号： G11B5/66

CPC分类号： G11B5/66 ,  G11B5/656 ,  G11B5/82

摘要： A magnetic recording medium has a laminated magnetic structure with at least three magnetic layers, wherein the magnetic layers have decreasing intrinsic coercivity H0 with distance from the write head. The write field at the center of each magnetic layer is greater than that layer's H0. The magnetic layers have different compositions and/or thicknesses and thereby different values of H0. The alloys used in the middle and upper magnetic layers are relatively “high-moment” alloys that would not ordinarily be used in magnetic recording media because they have relatively low S0NR, but the overall S0NR of the laminated magnetic structure is improved because of the effect of lamination. The middle and upper magnetic layers can be made substantially thinner, which enables the magnetic layers to be located closer to the write head, thereby exposing each of the magnetic layers to a higher write field.

摘要翻译： 磁记录介质具有至少三个磁性层的层叠磁性结构，其中磁性层具有与写头距离更小的固有矫顽力H 0 0。 每个磁性层的中心处的写入场大于该层的H 0 0。 磁性层具有不同的组成和/或厚度，从而具有不同的H 0 O值。 在中上层磁性层中使用的合金是相对“高力矩”的合金，它们通常不会用于磁记录介质，因为它们具有相对较低的S O N，但总体上S _{0得到改善。 可以使中上层磁性层和上磁性层实质上更薄，这使得磁层能够更靠近写入头位置，从而将每个磁性层暴露于较高的写入场。}

公开(公告)号：US07488545B2

公开(公告)日：2009-02-10

申请号：US11403468

申请日：2006-04-12

申请人： Eric E. Fullerton ,  David Margulies ,  Hal J. Rosen ,  Natacha F. Supper

发明人： Eric E. Fullerton ,  David Margulies ,  Hal J. Rosen ,  Natacha F. Supper

IPC分类号： G11B5/66

CPC分类号： G11B5/66 ,  G11B5/65

摘要： A laminated perpendicular magnetic recording medium has two recording layers (RL1 and RL2) that are separated and magnetically decoupled by a nonmagnetic spacer layer (SL). The SL has a thickness and composition to assure there is no antiferromagnetic or ferromagnetic coupling between RL1 and RL2. Thus in the presence of the write field, RL1 and RL2 respond independently and become oriented with the direction of the write field. Each RL is an “exchange-spring” type magnetic recording layer formed of two ferromagnetic layers (MAG1 and MAG2) that have substantially perpendicular magnetic anisotropy and are ferromagnetically exchange-coupled by a nonmagnetic or weakly ferromagnetic coupling layer (CL). The medium takes advantage of lamination to attain higher signal-to-noise ratio (SNR) yet has improved writability as a result of each RL being an exchange-spring type RL.

摘要翻译： 层叠的垂直磁记录介质具有被非磁性间隔层（SL）分离并磁解除的两个记录层（RL1和RL2）。 SL具有厚度和组成，以确保在RL1和RL2之间不存在反铁磁或铁磁耦合。 因此，在存在写入场的情况下，RL1和RL2独立地响应并且随着写入场的方向而取向。 每个RL是由两个铁磁层（MAG1和MAG2）形成的“交换弹簧”型磁记录层，它们具有基本上垂直的磁各向异性，并通过非磁性或弱铁磁耦合层（CL）进行铁磁交换耦合。 介质利用层叠来获得更高的信噪比（SNR），而由于每个RL是交换弹簧型RL，所以具有改进的可写性。

公开(公告)号：US20120250178A1

公开(公告)日：2012-10-04

申请号：US13077797

申请日：2011-03-31

申请人： Toshiki Hirano ,  Fu-Ying Huang ,  Jia-Yang Juang ,  Hal J. Rosen ,  Barry C. Stipe

发明人： Toshiki Hirano ,  Fu-Ying Huang ,  Jia-Yang Juang ,  Hal J. Rosen ,  Barry C. Stipe

IPC分类号： G11B5/02 ,  G11B5/673 ,  G11B5/66

CPC分类号： G11B5/66 ,  G11B5/7325 ,  G11B5/82

摘要： A magnetic media for heat assisted magnetic data recording. The magnetic media includes a thermal insulation layer structure formed near the substrate of the media provide more efficient heating of the write layer by allowing less heat dissipation to the substrate. The thermal insulation layer structure can be one or more layers of an oxide such as SiO2 and one or more layers of a material such as NiTa. Increasing the number of oxide layers and NiTa layers increases the thermal insulation of the thermal insulation layer structure thereby further increasing the efficiency of the heat assisted writing.

摘要翻译： 用于热辅助磁数据记录的磁介质。 磁介质包括在介质的衬底附近形成的绝热层结构，通过允许对衬底的较少散热来提供写入层的更有效的加热。 绝热层结构可以是一层或多层氧化物如SiO 2和一层或多层诸如NiTa的材料。 增加氧化物层和NiTa层的数量增加了绝热层结构的热绝缘性，从而进一步提高了热辅助写入的效率。

公开(公告)号：US08208228B2

公开(公告)日：2012-06-26

申请号：US12565721

申请日：2009-09-23

申请人： Stefan Maat ,  James Terrence Olson ,  Hal J. Rosen

发明人： Stefan Maat ,  James Terrence Olson ,  Hal J. Rosen

IPC分类号： G11B5/39 ,  G11B5/11 ,  G11B5/265

CPC分类号： G11B5/746 ,  B82Y10/00 ,  G11B5/02 ,  G11B5/3948 ,  G11B5/3977 ,  G11B5/4886 ,  G11B5/743 ,  G11B2005/0005

摘要： A magnetoresistive (MR) sensor or read head for a magnetic recording disk drive has multiple independent current-perpendicular-to-the-plane (CPP) MR sensing elements. The sensing elements are spaced-apart in the cross-track direction and separated by an insulating separation region so as to be capable of reading data from multiple data tracks on the disk. The sensing elements have independent CPP sense currents, each of which is directed to independent data detection electronics, respectively. Each sensing element comprises a stack of layers formed on a common electrically conducting base layer, which may be a bottom magnetic shield layer formed of electrically conducting magnetically permeable material. Each sensing element has a top electrical lead layer. A top magnetic shield layer is located above the sensing elements in contact with the top lead layers. The top shield layer is formed of soft magnetically permeable material, but is electrically insulating, so that the independent sense currents can be passed to the independent sensing elements.

摘要翻译： 用于磁记录磁盘驱动器的磁阻（MR）传感器或读头具有多个独立的电流垂直于平面（CPP）MR感测元件。 感测元件在交叉轨道方向上间隔开并且被绝缘分离区分开，以便能够从盘上的多个数据轨道读取数据。 感测元件具有独立的CPP感测电流，每个电流分别被引导到独立的数据检测电子器件。 每个感测元件包括形成在公共导电基底层上的一叠层，其可以是由导电的导磁材料形成的底部磁屏蔽层。 每个感测元件具有顶部电引线层。 顶部磁屏蔽层位于与顶部引线层接触的感测元件上方。 顶部屏蔽层由软磁导电材料形成，但是是电绝缘的，使得独立的感测电流可以传递到独立的感测元件。

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。

公开(公告)号：US20100002487A1

公开(公告)日：2010-01-07

申请号：US12553670

申请日：2009-09-03

申请人： Robert E. Fontana, JR. ,  Andreas Moser ,  Hal J. Rosen ,  Bruce D. Terris ,  Ching Hwa Tsang

发明人： Robert E. Fontana, JR. ,  Andreas Moser ,  Hal J. Rosen ,  Bruce D. Terris ,  Ching Hwa Tsang

IPC分类号： G11C11/00 ,  G11C11/15 ,  G11C11/416

CPC分类号： G11C11/14 ,  G11C5/02 ,  G11C19/0808

摘要： Magnetic memories and methods are disclosed. A magnetic memory as described herein includes a plurality of stacked data storage layers to form a three-dimensional magnetic memory. Bits may be written to a data storage layer in the form of magnetic domains. The bits can then be transferred between the stacked data storage layers by heating a neighboring data storage layer, which allows the magnetic fields from the magnetic domains to imprint the magnetic domains in the neighboring data storage layer. By imprinting the magnetic domains into the neighboring data storage layer, the bits are copied from one data storage layer to another.

摘要翻译： 公开了磁存储器和方法。 如本文所述的磁存储器包括多个堆叠的数据存储层以形成三维磁存储器。 位可以以磁畴的形式写入数据存储层。 然后可以通过加热相邻数据存储层在堆叠的数据存储层之间传送这些位，这允许来自磁畴的磁场将磁畴压印在相邻的数据存储层中。 通过将磁畴印刷到相邻数据存储层中，将这些位从一个数据存储层复制到另一个。

公开(公告)号：US5555537A

公开(公告)日：1996-09-10

申请号：US497518

申请日：1995-06-30

申请人： Wayne I. Imaino ,  Hal J. Rosen ,  Kurt A. Rubin ,  Wade W.-C. Tang

发明人： Wayne I. Imaino ,  Hal J. Rosen ,  Kurt A. Rubin ,  Wade W.-C. Tang

IPC分类号： G11B7/0045 ,  G11B7/243 ,  G11B7/257 ,  G11B7/00 ,  G11B5/66 ,  G11B7/24

CPC分类号： G11B7/257 ,  G11B7/24038 ,  G11B7/243 ,  G11B2007/24306 ,  G11B2007/24308 ,  G11B2007/2431 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/2432 ,  G11B2007/25706 ,  G11B2007/25708 ,  G11B2007/25716 ,  G11B7/00454 ,  G11B7/24009 ,  G11B7/24012

摘要： An optical disk drive uses an optical disk with spatially separated multiple phase-change WORM recording layers. The optical disk has a light transmissive substrate onto which the laser light is incident. The substrate supports at least two spatially separated multi-film recording stacks, each stack including an active recording layer of phase-change WORM material. The disk is either an air-gap structure wherein each recording stack is supported on a separate substrate and the substrates are separated by an air-gap, or a solid structure wherein a solid light transmissive spacer layer separates the recording stacks. Each of the recording stacks located between the substrate on which the laser light is incident and the farthest recording stack includes an active phase-change recording layer and an optical interference film in contact with the recording layer. The recording layer is made sufficiently thin to have good light transmissivity, but at this low thickness, without any other layers, is not sufficiently reflective to act as a recording layer with suitable servo and recording performance. The optical interference film in contact with the recording layer has a high index of refraction relative to the adjacent recording layer and spacer to increase the optical interference effect in the recording stack. The optical interference film optimizes the contrast, reflectivity and transmissivity of the recording stack. The optical interference film has low absorption so that laser light can pass through it to focus on a farther recording layer. This allows the farther recording layers to be written using reasonable laser power.

摘要翻译： 光盘驱动器使用具有空间分离的多相变WORM记录层的光盘。 光盘具有入射激光的透光基板。 衬底支撑至少两个空间分离的多层记录堆叠，每个堆叠包括相变WORM材料的活性记录层。 磁盘是气隙结构，其中每个记录堆叠被支撑在单独的基板上，并且基板被气隙分离，或者固体透光隔离层分离记录堆叠的固体结构。 位于其上入射的基板和最远的记录堆叠之间的记录堆叠中的每一个包括与记录层接触的有源相变记录层和光学干涉膜。 记录层被制成足够薄以具有良好的光透射率，但是在没有任何其它层的这个低厚度下，不能充分反射以用作具有适当的伺服和记录性能的记录层。 与记录层接触的光学干涉膜相对于相邻的记录层和间隔物具有高的折射率，以增加记录堆叠中的光学干涉效应。 光学干涉膜优化了记录堆叠的对比度，反射率和透射率。 光学干涉膜具有低吸收，使得激光可以通过它来聚焦在更远的记录层上。 这允许使用合理的激光功率写入更远的记录层。

公开(公告)号：US5446723A

公开(公告)日：1995-08-29

申请号：US371309

申请日：1995-01-10

申请人： Margaret E. Best ,  Hal J. Rosen ,  Kurt A. Rubin ,  Timothy C. Strand

发明人： Margaret E. Best ,  Hal J. Rosen ,  Kurt A. Rubin ,  Timothy C. Strand

IPC分类号： G02B7/28 ,  G11B7/00 ,  G11B7/0037 ,  G11B7/004 ,  G11B7/005 ,  G11B7/0055 ,  G11B7/007 ,  G11B7/013 ,  G11B7/085 ,  G11B7/09 ,  G11B7/135 ,  G11B7/1381 ,  G11B7/14 ,  G11B7/24 ,  G11B7/2405 ,  G11B7/24085 ,  G11B7/241 ,  G11B7/242 ,  G11B7/243 ,  G11B7/253 ,  G11B7/254 ,  G11B7/257 ,  G11B11/10 ,  G11B11/105 ,  G11B13/00 ,  G11B19/12 ,  G11B20/12 ,  G11B27/00 ,  G11B7/095

CPC分类号： G11B7/00745 ,  G11B11/10578 ,  G11B11/10584 ,  G11B19/12 ,  G11B7/005 ,  G11B7/0053 ,  G11B7/00557 ,  G11B7/00736 ,  G11B7/013 ,  G11B7/08505 ,  G11B7/08511 ,  G11B7/08517 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/0938 ,  G11B7/1365 ,  G11B7/13925 ,  G11B7/14 ,  G11B7/24 ,  G11B7/24038 ,  G11B7/241 ,  G11B7/243 ,  G11B7/2433 ,  G11B7/252 ,  G11B7/253 ,  G11B7/2578 ,  G11B11/10595 ,  G11B2007/0013 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25706 ,  G11B2007/2571 ,  G11B2007/25713 ,  G11B2007/25715 ,  G11B2007/25716 ,  G11B2007/25718 ,  G11B7/0037 ,  G11B7/007 ,  G11B7/00718 ,  G11B7/0945 ,  G11B7/2531 ,  G11B7/2533 ,  G11B7/2534 ,  Y10S428/913 ,  Y10S430/146

摘要： An optical data storage system comprises a multiple data surface medium and optical head. The medium comprises a plurality of substrates separated by a light transmissive medium. Data surfaces are located on the substrate surfaces which lie adjacent a light transmissive medium. The data surfaces are substantially light transmissive. The optical head includes an aberration compensator to allow the head to focus onto the different data surfaces and a filter to screen out unwanted reflected light.

公开(公告)号：US08048546B2

公开(公告)日：2011-11-01

申请号：US12639975

申请日：2009-12-16

申请人： Thomas R Albrecht ,  Michael Konrad Grobis ,  Ernesto E. Marinero ,  Hal J. Rosen ,  Ricardo Ruiz

发明人： Thomas R Albrecht ,  Michael Konrad Grobis ,  Ernesto E. Marinero ,  Hal J. Rosen ,  Ricardo Ruiz

IPC分类号： G11B5/66

CPC分类号： G11B5/855 ,  B82Y10/00 ,  G11B5/65 ,  G11B5/7325 ,  G11B5/743 ,  G11B5/82

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。