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：US5745979A

公开(公告)日：1998-05-05

申请号：US548767

申请日：1995-10-26

申请人： Robert Edward Fontana, Jr. ,  Linda Hope Lane ,  Mason Lamar Williams, III ,  Celia Elizabeth Yeack-Scranton

发明人： Robert Edward Fontana, Jr. ,  Linda Hope Lane ,  Mason Lamar Williams, III ,  Celia Elizabeth Yeack-Scranton

IPC分类号： G11B5/31 ,  G11B5/39 ,  G11B5/48 ,  G11B5/49 ,  G11B21/21

CPC分类号： G11B5/484 ,  G11B5/3103 ,  Y10T29/4903 ,  Y10T29/49041 ,  Y10T29/49044 ,  Y10T29/49046

摘要： A disk drive assembly in which the suspension and read/write transducer are integrated into a combination assembly and fabricated using thin film deposition techniques thereby producing an assembly which is very low in mass permitting contact recording. In one embodiment, transducers are deposited in a row and column configuration onto a release and support layer covering a wafer substrate having a thickness equal to a desired suspension length. The wafer is separated into a plurality of row sections, with each row section providing one thin film transducer from each column. A second release layer is formed on a separated side on the row section and thin layers of suitable materials are deposited to form a suspension layer including conductive lines extending to the thin film transducers. The first and second release layers are dissolved and the row section is further cut to form the individual combination assemblies. In a second embodiment, the wafer substrate has a thickness equal to the width of the suspension. The transducers deposited on a row are separated by the desired suspension length to produce combination assemblies useful for linear disk drive actuators. The excess portion of the wafer substrate can alternatively be removed by cutting or etching eliminating the requirement for release or support layers.

摘要翻译： 一种磁盘驱动器组件，其中悬架和读/写换能器集成到组合组件中并使用薄膜沉积技术制造，从而产生质量非常低的组件，允许接触记录。 在一个实施例中，换能器以行和列结构沉积到覆盖具有等于期望悬挂长度的厚度的晶片衬底的释放和支撑层上。 晶片被分成多个行部分，每个行部分从每个列提供一个薄膜换能器。 第二释放层形成在行部分上的分离侧上，并且沉积合适材料的薄层以形成包括延伸到薄膜换能器的导电线的悬浮层。 第一和第二释放层被溶解并且行部分被进一步切割以形成单独的组合组件。 在第二实施例中，晶片衬底的厚度等于悬架的宽度。 沉积在一排上的换能器被分离所需的悬挂长度，以产生用于线性盘驱动致动器的组合组件。 替代地，可以通过切割或蚀刻去除晶片衬底的多余部分，从而消除了释放或支撑层的要求。

公开(公告)号：US06271995B1

公开(公告)日：2001-08-07

申请号：US08259370

申请日：1994-06-14

申请人： Robert Edward Fontana, Jr. ,  Linda Hope Lane ,  Mason Lamar Williams, III ,  Celia Elizabeth Yeack-Scranton

发明人： Robert Edward Fontana, Jr. ,  Linda Hope Lane ,  Mason Lamar Williams, III ,  Celia Elizabeth Yeack-Scranton

IPC分类号： G11B548

CPC分类号： G11B5/484 ,  G11B5/3103 ,  Y10T29/4903 ,  Y10T29/49041 ,  Y10T29/49044 ,  Y10T29/49046

摘要： A disk drive assembly in which the suspension and read/write transducer are integrated into a combination assembly and fabricated using thin film deposition techniques thereby producing an assembly which is very low in mass permitting contact recording. In one embodiment, transducers are deposited in a row and column configuration onto a release and support layer covering a wafer substrate having a thickness equal to a desired suspension length. The wafer is separated into a plurality of row sections, with each row section providing one thin film transducer from each column. A second release layer is formed on a separated side on the row section and thin layers of suitable materials are deposited to form a suspension layer including conductive lines extending to the thin film transducers. The first and second release layers are dissolved and the row section is further cut to form the individual combination assemblies. In a second embodiment, the wafer substrate has a thickness equal to the width of the suspension. The transducers deposited on a row are separated by the desired suspension length to produce combination assemblies useful for linear disk drive actuators. The excess portion of the wafer substrate can alternatively be removed by cutting or etching eliminating the requirement for release or support layers.

摘要翻译： 一种磁盘驱动器组件，其中悬架和读/写换能器集成到组合组件中并使用薄膜沉积技术制造，从而产生质量非常低的组件，允许接触记录。 在一个实施例中，换能器以行和列结构沉积到覆盖具有等于期望悬挂长度的厚度的晶片衬底的释放和支撑层上。 晶片被分成多个行部分，每个行部分从每个列提供一个薄膜换能器。 第二释放层形成在行部分上的分离侧上，并且沉积合适材料的薄层以形成包括延伸到薄膜换能器的导电线的悬浮层。 第一和第二释放层被溶解并且行部分被进一步切割以形成单独的组合组件。 在第二实施例中，晶片衬底的厚度等于悬架的宽度。 沉积在一排上的换能器被分离所需的悬挂长度，以产生用于线性盘驱动致动器的组合组件。 替代地，可以通过切割或蚀刻去除晶片衬底的多余部分，从而消除了释放或支撑层的要求。

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：US06344949B1

公开(公告)日：2002-02-05

申请号：US09352538

申请日：1999-07-13

申请人： Thomas Robert Albrecht ,  Robert Edward Fontana, Jr. ,  Prakash Kasiraj ,  Erno Hilbrand Klaassen ,  Robert Nolan Payne ,  Timothy Clark Reiley

发明人： Thomas Robert Albrecht ,  Robert Edward Fontana, Jr. ,  Prakash Kasiraj ,  Erno Hilbrand Klaassen ,  Robert Nolan Payne ,  Timothy Clark Reiley

IPC分类号： G11B1732

CPC分类号： G11B5/486 ,  G11B5/4833 ,  G11B5/6064 ,  Y10S977/934

摘要： Flying height Adjustment for Air Bearing Sliders An air bearing slider for sliding over a medium surface of a recording medium and having an air bearing surface facing the disk surface, a back surface perpendicular to the air bearing surface and a head at the back surface. During operation the head is maintained at a flying height above the disk surface with the aid of a flying height adjustment mechanism consisting of one or more ducts, each having an inlet at the air bearing surface and an outlet at the back surface. A valve mechanism controls an air flow through the duct or ducts by opening and closing the valve or valves together or independently. Alternatively, a deformable surface feature located on the back surface of the slider is used to alter the air flow to thus control the flying height. The mechanism of the invention allows one to achieve accurate flying height control in a range between 5 and 50 nm and between 0 nm and 15 nm as required for near-field or contact disk drives. By adjusting the flying height the contact can be limited to times of reading or writing data to the disk, thereby lowering the total contact time thereby reducing head/disk interface wear.

摘要翻译： 空气轴承滑块的飞行高度调整用于在记录介质的介质表面上滑动并具有面向盘表面的空气轴承表面的空气轴承滑块，垂直于空气轴承表面的后表面和在后表面处的头部。 在操作期间，借助于由一个或多个管道组成的飞行高度调节机构，将头部保持在盘表面上方的飞行高度，每个管道在空气轴承表面具有入口和在后表面处的出口。 阀机构通过一起或独立地打开和关闭阀或阀来控制通过管道或管道的空气流。 或者，位于滑块后表面的可变形表面特征用于改变气流，从而控制飞行高度。 本发明的机构允许根据近场或接触盘驱动器的需要，在5至50nm之间和0nm至15nm的范围内实现精确的飞行高度控制。 通过调整飞行高度，可以将触点限制在读取或写入数据的次数，从而降低总接触时间，从而减少磁头/磁盘接口磨损。

公开(公告)号：US07161773B2

公开(公告)日：2007-01-09

申请号：US11075079

申请日：2005-03-07

申请人： Robert Edward Fontana, Jr. ,  Kuok San Ho ,  Tao Pan ,  Ching Hwa Tsang

发明人： Robert Edward Fontana, Jr. ,  Kuok San Ho ,  Tao Pan ,  Ching Hwa Tsang

IPC分类号： G11B5/39 ,  G11B5/127

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G01R33/098 ,  G11B5/3932 ,  G11B2005/3996 ,  Y10T29/49044 ,  Y10T29/49046

摘要： Several embodiments of a sense current perpendicular to the planes of the sensor (CPP) and flux guide type of read head has a gap between first and second shield layers at an air bearing surface (ABS) where the flux guide is located which is less than a gap between the first and second shield layers at a recessed location where the sensor is located. This reduced gap increases the linear bit density capability of the read head. A longitudinal bias stack (LBS) is located in the sensor stack. Several unique methods of construction are described for forming the magnetic head assemblies.

摘要翻译： 垂直于传感器（CPP）的平面的感测电流和读取头的通量引导类型的几个实施例在通量指示器所在的空气轴承表面（ABS）处具有小于第一和第二屏蔽层的空隙 第一和第二屏蔽层之间在传感器所在的凹陷位置处的间隙。 这种减小的间隙增加了读取头的线性位密度能力。 纵向偏置堆栈（LBS）位于传感器堆叠中。 描述了用于形成磁头组件的几种独特的结构方法。

公开(公告)号：US6131271A

公开(公告)日：2000-10-17

申请号：US344071

申请日：1999-06-25

申请人： Robert Edward Fontana, Jr. ,  Hung-Chin Guthrie ,  William Leslie Guthrie ,  Eric James Lee ,  Li-Chung Lee ,  Francisco Agustin Martin

发明人： Robert Edward Fontana, Jr. ,  Hung-Chin Guthrie ,  William Leslie Guthrie ,  Eric James Lee ,  Li-Chung Lee ,  Francisco Agustin Martin

IPC分类号： G11B5/31 ,  G11B5/42

CPC分类号： G11B5/3173 ,  G11B5/3116 ,  G11B5/3163 ,  G11B5/3109 ,  Y10T29/49044 ,  Y10T29/49046

摘要： A method planarizes a first pole piece layer of a write head by lapping without delaminating the first pole piece layer from an underlying second read gap layer on a wafer substrate. This is accomplished by separating or dicing the first pole piece material layer in a field region about rows and columns of first pole piece layers of magnetic head assemblies so as to reduce the stress of the first pole piece material layer in the field. Accordingly, when the wafer substrate is lapped, such as by chemical mechanical polishing (CMP), a reduced stress prevents the first pole piece material layer from delaminating from the second read gap layer during the lapping operation.

摘要翻译： 方法通过研磨平面化写入头的第一极片层，而不使第一极片层与晶片衬底上的下面的第二读取间隙层分层。 这是通过在围绕磁头组件的第一极片层的行和列的场区域中分离或切割第一极片材料层来实现的，以便减小现场中第一极片材料层的应力。 因此，当通过化学机械抛光（CMP）研磨晶片衬底时，减小的应力在研磨操作期间防止第一极片材料层与第二读取间隙层分层。

公开(公告)号：US5805375A

公开(公告)日：1998-09-08

申请号：US703111

申请日：1996-08-22

申请人： Long-Sheng Fan ,  Robert Edward Fontana, Jr. ,  Tomotake Furuhata ,  Timothy Clark Reiley ,  Hans Helmut Zappe

发明人： Long-Sheng Fan ,  Robert Edward Fontana, Jr. ,  Tomotake Furuhata ,  Timothy Clark Reiley ,  Hans Helmut Zappe

IPC分类号： G11B5/55 ,  G11B5/596 ,  H02N1/00 ,  H02N1/100

CPC分类号： G11B5/596 ,  G11B5/5521 ,  H02N1/004

摘要： A microfabricated wobble motor with a positioning arm attached to the wobble motor rotor acts as a fine positioner with bidirectional movement. The primary application is a rotary actuator for the read/write head in a very small magnetic recording disk drive. An integrated head-arm assembly is attached at one end to the rotor of the wobble motor. The other end of the head-arm assembly has a head carrier that is maintained in contact with the disk. Head position error information is read from the disk and used to provide control signals to each of the stator elements. The stator elements are sequentially addressed by applying a voltage from a driver circuit. This causes the rotor to be electrostatically attracted to the activated stators, so that the rotor is movable bidirectionally. The read/write head can thus be moved bidirectionally to any of the data tracks on the disk and maintained on a desired data track for reading or writing data. The fine positioner also includes a digital control system where each of the stator elements is represented by an address, and the movement of the rotor is controlled by incrementing or decrementing the stator address in an address register.

摘要翻译： 具有连接到摆动电动机转子的定位臂的微型摆动电动机作为具有双向运动的精细定位器。 主要应用是在非常小的磁记录磁盘驱动器中用于读/写磁头的旋转致动器。 一体的头臂组件一端连接到摆动马达的转子上。 头臂组件的另一端具有保持与盘接触的头托架。 磁头位置误差信息从磁盘读取并用于向每个定子元件提供控制信号。 通过施加来自驱动器电路的电压来顺序地寻址定子元件。 这导致转子被静电吸引到激活的定子，使得转子可双向移动。 因此，读/写头可以双向移动到磁盘上的任何数据轨道，并保持在用于读取或写入数据的所需数据轨道上。 精细定位器还包括数字控制系统，其中每个定子元件由地址表示，并且通过递增或递减地址寄存器中的定子地址来控制转子的移动。