公开(公告)号：US5798890A

公开(公告)日：1998-08-25

申请号：US811490

申请日：1997-03-05

申请人： Robert Edward Fontana, Jr. ,  Steven Robert Hetzler ,  Hugo Alberto Emilio Santini ,  Mason Lamar Williams

发明人： Robert Edward Fontana, Jr. ,  Steven Robert Hetzler ,  Hugo Alberto Emilio Santini ,  Mason Lamar Williams

IPC分类号： G11B5/31 ,  G11B5/39 ,  G11B5/48 ,  G11B21/00 ,  G11B5/60 ,  G11B21/21

CPC分类号： G11B5/3967 ,  G11B21/00 ,  G11B5/3103 ,  G11B5/4813 ,  G11B5/4886 ,  G11B5/3166 ,  G11B5/3948

摘要： A magnetic recording disk drive uses side-by-side read/write heads formed on head carriers that are substantially identical for both top and bottom disk surfaces. Thus, a common head carrier functions as a single manufacturable part usable for both top and bottom disk surfaces. The common head carrier has a trailing end with a pattern of components formed on it that includes three side-by-side transducers and sets of terminal pads. In the read/write/read side-by-side head arrangement, the first element is a center write element, such as an inductive coil, and the second and third elements are read elements, such as magnetoresistive read elements, that are generally equally spaced from the center write element. In common carriers to be used for the top disk surfaces, one of the read elements is electrically connected to the read/write channel of the disk drive, and in common carriers to be used for the bottom disk surfaces, the other read element on the common carrier is electrically connected to the read/write channel. The disk drive thus operates in cylinder mode with side-by-side heads using a common carrier for both top and bottom disk surfaces.

摘要翻译： 磁记录盘驱动器使用形成在头托架上的并排读/写头，其对于顶盘和底盘表面基本相同。 因此，公共的头托架用作可用于顶部和底部盘表面的单个可制造部件。 公共头托架具有后端，其上形成有包括三个并排换能器和端子排组的部件图案。 在读/写/读并排磁头布置中，第一元件是诸如感应线圈的中心写元件，并且第二和第三元件是读取元件，例如磁阻读取元件，其大致相等 与中心写入元件间隔开。 在用于顶部磁盘表面的公共载体中，读取元件中的一个电连接到磁盘驱动器的读取/写入通道，并且在用于底部磁盘表面的公共载体中，另一个读取元件 公共载体电连接到读/写通道。 因此，磁盘驱动器以圆柱模式并行地使用顶部和底部磁盘表面的公共载体。

公开(公告)号：US5896249A

公开(公告)日：1999-04-20

申请号：US138836

申请日：1998-08-24

申请人： Robert Edward Fontana, Jr. ,  Steven Robert Hetzler ,  Hugo Alberto Emilio Santini ,  Mason Lamar Williams

发明人： Robert Edward Fontana, Jr. ,  Steven Robert Hetzler ,  Hugo Alberto Emilio Santini ,  Mason Lamar Williams

IPC分类号： G11B5/31 ,  G11B5/39 ,  G11B5/48 ,  G11B21/00 ,  G11B5/60

CPC分类号： G11B5/3967 ,  G11B21/00 ,  G11B5/3103 ,  G11B5/4813 ,  G11B5/4886 ,  G11B5/3166 ,  G11B5/3948

摘要： A magnetic recording disk drive uses side-by-side read/write heads formed on head carriers that are identical for both top and bottom disk surfaces. Thus, a common head carrier functions as a single manufacturable part usable for both top and bottom disk surfaces. The common head carrier has a trailing end with a pattern of components formed on it that includes three side-by-side transducers (two read elements equally spaced about a center write element) and five terminal pads, one of which is a common pad, and all of the electrical connectors interconnecting the five terminal pads with the three transducers. There are only three terminal pads for the two read elements, with one of the read terminal pads being a common terminal pad that is electrically connected to both read elements. During assembly of the disk drive, the common carrier, when used as the top carrier, has a first read terminal pad and the common terminal pad connected to the leads on the suspension. When used as the bottom carrier, the second read terminal pad and the common terminal pad are connected to the leads on the suspension. Thus, only one carrier common to both top and bottom sides of the disk needs to be manufactured. The uniqueness of the top and bottom carriers is obtained by the wiring connection of the read terminal pads to the leads on the suspensions.

摘要翻译： 磁记录盘驱动器使用形成在头托架上的并排读/写头，其对于顶盘和底盘表面是相同的。 因此，公共的头托架用作可用于顶部和底部盘表面的单个可制造部件。 公共头托架具有后端，其上形成有包括三个并排换能器（两个读取元件，围绕中心写入元件等间隔开）的部件图案，以及五个端子焊盘，其中一个是公共焊盘， 并且所有电连接器将五个端子焊盘与三个换能器互连。 两个读取元件只有三个端子焊盘，其中一个读取端子焊盘是与两个读取元件电连接的公共端子焊盘。 在盘驱动器的组装期间，公共载体当用作顶部载体时，具有第一读取端子焊盘，并且公共端子焊盘连接到悬架上的引线。 当用作底部载体时，第二读取端子焊盘和公共端子焊盘连接到悬架上的引线。 因此，只需要制造一个与磁盘的顶面和底面共同的载体。 顶部和底部载体的唯一性是通过将读取的端子焊盘连接到悬架上的引线而获得的。

公开(公告)号：US06757141B2

公开(公告)日：2004-06-29

申请号：US10054553

申请日：2002-01-18

申请人： Hugo Alberto Emilio Santini ,  Mason Lamar Williams

发明人： Hugo Alberto Emilio Santini ,  Mason Lamar Williams

IPC分类号： G11B5127

CPC分类号： G11B5/6005 ,  G11B5/3163

摘要： A perpendicular recording head has a second pole piece which includes a bottom ferromagnetic shaping layer and a top ferromagnetic probe layer. Each of these layers has a flare point where the layers first commence to widen after the ABS with the flare point of the shaping layer being located between an air bearing surface (ABS) of the head and the flare point of the probe layer. Further, the probe layer has a probe at the ABS which has a decreasing width from its top to its bottom to provide a trapezoidal shape which minimizes side writing due to skew of the probe at outermost and innermost circular tracks of a rotating magnetic disk.

摘要翻译： 垂直记录头具有包括底部铁磁成形层和顶部铁磁探针层的第二极片。 这些层中的每一个都具有闪络点，其中层之后首先在ABS之后开始变宽，成形层的扩张点位于头部的空气支承表面（ABS）和探针层的扩张点之间。 此外，探针层在ABS处具有探针，该探针从其顶部到底部具有减小的宽度，以提供梯形形状，其最小化由于探针在旋转磁盘的最外圆周轨迹和最内圆周轨道处的歪斜而造成的侧面写入。

公开(公告)号：US06693769B2

公开(公告)日：2004-02-17

申请号：US09884608

申请日：2001-06-18

申请人： Yimin Hsu ,  Hugo Alberto Emilio Santini ,  Neil Smith ,  Mason Lamar Williams

发明人： Yimin Hsu ,  Hugo Alberto Emilio Santini ,  Neil Smith ,  Mason Lamar Williams

IPC分类号： G11B5147

CPC分类号： G11B5/3136 ,  G11B5/3116 ,  G11B5/313 ,  Y10T29/49044

摘要： A magnetic head assembly includes first and second pole pieces and first and second coil layers wherein the second pole piece has a ferromagnetic pole tip which forms a portion of an air bearing surface and defines a track width of a write head. A write gap layer is located between the first pole piece and the pole tip. A dielectric first insulation layer interfaces first and second side surfaces of the pole tip and is located between the first and second coil layers. The second pole piece has a ferromagnetic second pole piece structure which is magnetically connected to each of the pole tip and the first pole piece and extends across the second coil layer. In a first embodiment the second pole piece structure is a single layer and in a second embodiment the second pole piece structure has front and back components with a flat laminated second pole piece yoke layer located therebetween.

公开(公告)号：US06952326B2

公开(公告)日：2005-10-04

申请号：US10611627

申请日：2003-06-30

申请人： Yimin Hsu ,  Hugo Alberto Emilio Santini ,  Neil Smith ,  Mason Lamar Williams

发明人： Yimin Hsu ,  Hugo Alberto Emilio Santini ,  Neil Smith ,  Mason Lamar Williams

IPC分类号： G11B5/31 ,  G11B5/127

CPC分类号： G11B5/3136 ,  G11B5/3116 ,  G11B5/313 ,  Y10T29/49044

摘要： A magnetic head assembly includes first and second pole pieces and first and second coil layers wherein the second pole piece has a ferromagnetic pole tip which forms a portion of an air bearing surface and defines a track width of a write head. A write gap layer is located between the first pole piece and the pole tip. A dielectric first insulation layer interfaces first and second side surfaces of the pole tip and is located between the first and second coil layers. The second pole piece has a ferromagnetic second pole piece structure which is magnetically connected to each of the pole tip and the first pole piece and extends across the second coil layer. In a first embodiment the second pole piece structure is a single layer and in a second embodiment the second pole piece structure has front and back components with a flat laminated second pole piece yoke layer located therebetween.

摘要翻译： 磁头组件包括第一和第二极片以及第一和第二线圈层，其中第二极靴具有形成空气轴承表面的一部分并限定写入头的轨道宽度的铁磁极尖端。 写间隙层位于第一极片和极尖之间。 电介质第一绝缘层与极尖的第一和第二侧表面接合并位于第一和第二线圈层之间。 第二极片具有铁磁第二极片结构，其磁极连接到极尖和第一极靴中的每一个并且延伸穿过第二线圈层。 在第一实施例中，第二极靴结构是单层，在第二实施例中，第二极靴结构具有前后组件，其间具有平坦的层叠的第二极片轭层。

公开(公告)号：US06259583B1

公开(公告)日：2001-07-10

申请号：US09154527

申请日：1998-09-16

申请人： Robert Edward Fontana, Jr. ,  Yimin Hsu ,  Prakash Kasiraj ,  Mason Lamar Williams

发明人： Robert Edward Fontana, Jr. ,  Yimin Hsu ,  Prakash Kasiraj ,  Mason Lamar Williams

IPC分类号： G11B5147

CPC分类号： G11B5/3153 ,  G11B5/3113 ,  G11B5/3156

摘要： The present invention is a magnetic head which has a preferably planar pole member having a yoke and a tip with a first planar pole P1 and a second planar pole P2 positioned above pole P1. The pole member is built up of two types of layers: a first type of layer with high magnetic permeability &mgr; and low anisotropy Hk, with the easy axis oriented substantially perpendicular to the flux propagation direction to ensure rapid response, and a second layer type which is non-magnetic. The magnetic head also has a domain control element whose magnetization in the vicinity of the pole tip P2 and in the absence of applied field is aligned along the length of the element so as to facilitate the conduction of flux between poles P1 and P2. The domain control element can be a non-laminated element made of a material with high saturation magnetization MS such as NiFe, Ni80Fe20, Ni45Fe55, NiFeCo, FeCo, CoZrNb, FeAlN and FeTaN and proper dimensioning of the element further increases the flux conduction efficiency.

摘要翻译： 本发明是一种磁头，其具有优选的具有磁轭的平面磁极部件和具有位于磁极P1上方的第一平面磁极P1和第二平面磁极P2的末端。 极构件由两种类型的层构成：具有高磁导率μm和低各向异性H k的第一类型的层，易轴定向为基本上垂直于磁通传播方向，以确保快速响应，以及第二层类型 是非磁性的。 磁头还具有域控制元件，其磁极尖端P2附近的磁化和不存在施加磁场的磁化沿着元件的长度排列，以便于磁极P1和P2之间的磁通传导。 域控制元件可以是由诸如NiFe，Ni80Fe20，Ni45Fe55，NiFeCo，FeCo，CoZrNb，FeAlN和FeTaN的高饱和磁化MS的材料制成的非层叠元件，并且元件的适当尺寸进一步增加了通量传导效率。

公开(公告)号：US5901018A

公开(公告)日：1999-05-04

申请号：US957788

申请日：1997-10-24

申请人： Robert Edward Fontana, Jr. ,  Stuart Stephen Papworth Parkin ,  Ching Hwa Tsang ,  Mason Lamar Williams

发明人： Robert Edward Fontana, Jr. ,  Stuart Stephen Papworth Parkin ,  Ching Hwa Tsang ,  Mason Lamar Williams

IPC分类号： G11B5/39 ,  G11B5/33

CPC分类号： G11B5/33 ,  G11B5/332

摘要： A magnetic tunnel junction (MTJ) magnetoresistive read head for a magnetic recording system has the MTJ sensing or free ferromagnetic layer also functioning as a flux guide to direct magnetic flux from the magnetic recording medium to the tunnel junction. The MTJ fixed ferromagnetic layer and the MTJ tunnel barrier layer have their front edges substantially coplanar with the sensing surface of the head. Both the fixed and free ferromagnetic layers are in contact with opposite surfaces of the MTJ tunnel barrier layer but the free ferromagnetic layer extends beyond the back edge of either the tunnel barrier layer or the fixed ferromagnetic layer, whichever back edge is closer to the sensing surface. This assures that the magnetic flux is non-zero in the tunnel junction region. The magnetization direction of the fixed ferromagnetic layer is fixed in a direction generally perpendicular to the sensing surface and thus to the magnetic recording medium, preferably by interfacial exchange coupling with an antiferromagnetic layer. The magnetization direction of the free ferromagnetic layer is aligned in a direction generally parallel to the surface of the medium in the absence of an applied magnetic field and is free to rotate in the presence of applied magnetic fields from the medium. A layer of high coercivity hard magnetic material adjacent the sides of the free ferromagnetic layer longitudinally biases the magnetization of the free ferromagnetic layer in the preferred direction.

摘要翻译： 用于磁记录系统的磁隧道结（MTJ）磁阻读取头具有MTJ感测或自由铁磁层，还用作磁通指引，以将磁通量从磁记录介质引导到隧道结。 MTJ固定铁磁层和MTJ隧道阻挡层的前缘基本上与头部的感测表面共面。 固定和自由铁磁层都与MTJ隧道势垒层的相对表面接触，但自由铁磁层延伸超过隧道势垒层或固定铁磁层的后边缘，无论哪个后边缘更靠近感测表面 。 这确保了隧道结区域中的磁通量不为零。 固定铁磁层的磁化方向固定在大致垂直于感测表面的方向上，并因此固定在磁记录介质上，优选地通过与反铁磁层的界面交换耦合。 在没有施加的磁场的情况下，自由铁磁层的磁化方向在大致平行于介质的表面的方向上对齐，并且在存在来自介质的施加的磁场的情况下自由旋转。 邻近自由铁磁层侧面的高矫顽磁性硬磁材料层沿优选方向纵向偏置自由铁磁层的磁化。

公开(公告)号：US20110075292A1

公开(公告)日：2011-03-31

申请号：US12959771

申请日：2010-12-03

申请人： Richard M. H. New ,  Mason Lamar Williams

发明人： Richard M. H. New ,  Mason Lamar Williams

IPC分类号： G11B5/596

CPC分类号： G06F3/0658 ,  G06F3/0608 ,  G06F3/061 ,  G06F3/0643 ,  G06F3/0676 ,  G06F11/1008 ,  G11B5/012 ,  G11B5/5526 ,  G11B27/34

摘要： Data is written to a hard disk drive using shingled writing principles, i.e., each data track is partially overwritten when an immediately contiguous data track is written. One or more contiguous data tracks establish a hand, and a band establishes a respective segment in a log-structured file system.

摘要翻译： 数据被写入硬盘驱动器，使用着色的写入原理，即当紧紧连续的数据磁道被写入时，每个数据磁道被部分重写。 一个或多个相邻的数据轨道建立一个手，并且一个频带在日志结构的文件系统中建立相应的段。

公开(公告)号：US07009812B2

公开(公告)日：2006-03-07

申请号：US10675046

申请日：2003-09-29

申请人： Yimin Hsu ,  Quang Le ,  Hin Pong Edward Lee ,  James Lamar Nix ,  Aron Pentek ,  Kurt Rubin ,  Neil Smith ,  Nian Xiang Sun ,  Walter Eugene Weresin ,  Mason Lamar Williams

发明人： Yimin Hsu ,  Quang Le ,  Hin Pong Edward Lee ,  James Lamar Nix ,  Aron Pentek ,  Kurt Rubin ,  Neil Smith ,  Nian Xiang Sun ,  Walter Eugene Weresin ,  Mason Lamar Williams

IPC分类号： G11B5/147

CPC分类号： G11B5/3116 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/6005

摘要： The invention is a magnetic transducer with separated read and write heads for perpendicular recording. The write head has a trailing shield that extends from the return pole piece toward the main pole piece to form the write gap at the air-bearing surface. One embodiment of the trailing shield is a two part structure with a pedestal and a much smaller tip that confronts the main pole piece at the gap. In one embodiment a sink of non-magnetic, electrically conductive material is disposed in the separation gap between the read head and the flux bearing pole piece. The sink is preferably made of copper and does not extend to the ABS.

摘要翻译： 本发明是具有分离的用于垂直记录的读写头的磁性换能器。 写头具有从返回极片向主极片延伸的尾部屏蔽件，以在空气轴承表面形成写入间隙。 后挡板的一个实施例是具有基座的两部分结构和在间隙处面对主极片的更小的尖端。 在一个实施例中，非磁性导电材料的汇流槽设置在读取头和磁通轴承极片之间的分隔间隙中。 水槽优选由铜制成并且不延伸到ABS。

公开(公告)号：US07490212B2

公开(公告)日：2009-02-10

申请号：US10674093

申请日：2003-09-29

申请人： Prakash Kasiraj ,  Richard M. H. New ,  Jorge Campello de Souza ,  Mason Lamar Williams

发明人： Prakash Kasiraj ,  Richard M. H. New ,  Jorge Campello de Souza ,  Mason Lamar Williams

IPC分类号： G06F12/00

CPC分类号： G11B27/11 ,  G11B5/012 ,  G11B20/1217 ,  G11B2020/1238 ,  G11B2020/1298 ,  G11B2220/2516 ,  G11B2220/65

摘要： Data is written to a hard disk drive using shingled writing principles, i.e., each data track is partially overwritten when an immediately contiguous data track is written. Two or more contiguous data tracks establish a band, and a band may store data from one and only one file, such as an AV file.

摘要翻译： 数据被写入硬盘驱动器，使用着色的写入原理，即当紧紧连续的数据磁道被写入时，每个数据磁道被部分重写。 两个或更多个连续的数据轨道建立一个频带，并且频带可以存储来自一个文件（例如AV文件）的数据。