公开(公告)号：US07271982B2

公开(公告)日：2007-09-18

申请号：US10778265

申请日：2004-02-13

Applicant: Scott Arthur MacDonald ,  Ian Robson McFadyen ,  Neil Leslie Robertson

Inventor： Scott Arthur MacDonald ,  Ian Robson McFadyen ,  Neil Leslie Robertson

IPC: G11B5/127

CPC classification number: G11B5/3116 ,  G11B5/1278 ,  G11B5/3169

Abstract: A method for forming a perpendicular magnetic recording head using an air-bearing surface damascene process and perpendicular magnetic recording head formed thereby is disclosed. The perpendicular head is formed by depositing a pseudo trailing shield layer over a pole layer and selectively etching the pseudo trailing shield layer to a depth equal to a desired trailing shield throat height. Then, a magnetic material is deposited in the resulting void.

Abstract translation: 公开了一种使用空气轴承表面镶嵌工艺形成垂直磁记录头的方法和由此形成的垂直磁记录头。 通过在极层上沉积伪尾部屏蔽层并选择性地将伪尾随屏蔽层选择性地蚀刻到等于期望的尾部屏蔽喉部高度的深度来形成垂直头。 然后，在所得到的空隙中沉积磁性材料。

公开(公告)号：US07591064B2

公开(公告)日：2009-09-22

申请号：US11186138

申请日：2005-07-20

Applicant: Ian Robson McFadyen

Inventor： Ian Robson McFadyen

IPC: G11B5/29

CPC classification number: G11B5/3163 ,  G11B5/3173 ,  G11B5/3948 ,  Y10T29/49032 ,  Y10T29/49037 ,  Y10T29/49041 ,  Y10T29/49048 ,  Y10T29/49053 ,  Y10T29/49147 ,  Y10T29/49169

Abstract: A method is presented for fabrication of a tape medium read head having a unitary formation of multiple elements for reading multi-track data from a magnetic tape. The method includes providing a continuous substrate layer, and forming a sensor material layer on the continuous substrate layer. Photoresist material is deposited on the sensor material layer, and is patterned to form masks which provide protected areas and exposed areas of the sensor material layer. Exposed areas of the sensor material layer are shaped to form sensors from the protected areas of the sensor material layer. Electrical lead materials are deposited between and adjacent to the sensors, and the masks are removed.

Abstract translation: 提出了一种用于制造具有用于从磁带读取多轨迹数据的多个元件的整体形成的带式介质读取头的方法。 该方法包括提供连续的基底层，并在连续的基底层上形成传感器材料层。 光刻胶材料沉积在传感器材料层上，并被图案化以形成提供传感器材料层的保护区域和暴露区域的掩模。 传感器材料层的暴露区域成形为从传感器材料层的保护区域形成传感器。 电导线材料沉积在传感器之间并与传感器相邻，并且去除掩模。

公开(公告)号：US07296337B2

公开(公告)日：2007-11-20

申请号：US10853805

申请日：2004-05-25

Applicant: Ian Robson McFadyen

Inventor： Ian Robson McFadyen

IPC: G11B5/127 ,  H04R31/00

CPC classification number: G11B5/1278 ,  Y10T29/49043 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

Abstract: During fabrication of a perpendicular write head in a wafer, at least two sides of a write pole are defined (e.g. by ion milling) while a third side of the write pole is protected by a masking material. At this stage, a material that is to be located in the write gap is already present between the write pole and the masking material. After definition of the write pole surfaces, a layer of dielectric material is deposited. During this deposition, the masking material is still present. Thereafter, the masking material (and any dielectric material thereon) is removed, to form a hole in the dielectric material. Next, a trailing shield is formed in the structure, so that at least one portion of the trailing shield is located in the hole, and another portion of the trailing shield is located over the dielectric material, in an area adjacent to the hole. Note that the gap material is now sandwiched between the portion of the trailing shield in the hole, and the write pole.

Abstract translation: 在制造晶片中的垂直写头时，写极的至少两侧被限定（例如通过离子铣削），而写极的第三侧由掩模材料保护。 在该阶段，位于写入间隙中的材料已经存在于写入极和掩模材料之间。 在写入磁极表面的定义之后，沉积介电材料层。 在该沉积期间，掩模材料仍然存在。 此后，去除掩模材料（及其上的任何介电材料），以在电介质材料中形成孔。 接下来，在该结构中形成尾部屏蔽，使得后屏蔽件的至少一部分位于孔中，并且后屏蔽件的另一部分位于电介质材料上方，邻近该孔。 注意，间隙材料现在夹在孔中的后屏蔽的部分和写极之间。

公开(公告)号：US06678127B2

公开(公告)日：2004-01-13

申请号：US09753804

申请日：2001-01-02

Applicant: Richard Hsiao ,  James D. Jarratt ,  Emo Hilbrand Klaassen ,  Ian Robson McFadyen ,  Timothy J. Moran

Inventor： Richard Hsiao ,  James D. Jarratt ,  Emo Hilbrand Klaassen ,  Ian Robson McFadyen ,  Timothy J. Moran

IPC: G11B540

CPC classification number: B82Y10/00 ,  G11B5/33 ,  G11B5/3967 ,  G11B5/40 ,  G11B5/455 ,  G11B33/10 ,  G11B2005/0013 ,  Y10T29/49032 ,  Y10T29/49036 ,  Y10T29/49039 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49071 ,  Y10T29/49073 ,  Y10T29/49078

Abstract: A first read gap layer has a resistance RG1 between a first shield layer and one of the first and second lead layers of a read head and the second read gap layer has a resistance RG2 between a second shield layer and said one of the first and second lead layers of the read head. A connection is provided via a plurality of resistors between a first node and each of the first and second shield layers wherein the plurality of resistors includes at least first and second resistors RS1 and RS2 and the first node is connected to said one of the first and second lead layers. A second node is located between the first and second resistors RS1 and RS2. An operational amplifier has first and second inputs connected to the first and second nodes respectively so as to be across the first resistor RS1 and has an output connected to the first node for maintaining the first and second nodes at a common voltage potential. In a first embodiment the first and second shield layers are shorted together. A test instrument is then employed for determining the combined parallel resistance of the resistors RS1 and RS2 by having a first side of the test instrument connected to the first node and the second side connected to each of the first and second shield layers. In the second embodiment a third resistor RS3 is connected between the second node and one of the shield layers, such as the second shield layer. The test instrument can determine the resistances of the first and second gap layers separately by being connected between the first node and the first shield layer for the resistance of the first gap layer or between the first node and the second shield layer for the resistance of the second gap layer.

Abstract translation: 第一读取间隙层在第一屏蔽层和读取头的第一和第二引线层中的一个之间具有电阻RG1，并且第二读取间隙层在第二屏蔽层和第一和第二引线之间的电阻RG2 读头的引导层。 通过第一节点和第一和第二屏蔽层中的每一个之间的多个电阻器提供连接，其中多个电阻器至少包括第一和第二电阻器RS1和RS2，并且第一节点连接到第一和第二屏蔽层中的所述第一和第二屏蔽层 第二铅层。 第二节点位于第一和第二电阻器RS1和RS2之间。 运算放大器具有分别连接到第一和第二节点的第一和第二输入，以跨过第一电阻器RS1并且具有连接到第一节点的输出，用于将第一和第二节点维持在共同的电压电位。 在第一实施例中，第一和第二屏蔽层被短路在一起。 然后通过使测试仪器的第一侧连接到第一节点并且第二侧连接到第一和第二屏蔽层中的每一个，然后采用测试仪器来确定电阻器RS1和RS2的组合并联电阻。 在第二实施例中，第三电阻器RS3连接在第二节点和其中一个屏蔽层之间，例如第二屏蔽层。 测试仪器可以通过连接在第一节点和第一屏蔽层之间来分别确定第一和第二间隙层的电阻，用于第一间隙层的电阻或第一节点和第二屏蔽层之间的电阻， 第二间隙层。

公开(公告)号：US20090273862A1

公开(公告)日：2009-11-05

申请号：US12114694

申请日：2008-05-02

Applicant: Ian Robson McFadyen ,  Petrus Antonius Van Der Heijden

Inventor： Ian Robson McFadyen ,  Petrus Antonius Van Der Heijden

IPC: G11B5/33

CPC classification number: G11B5/3163 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/313 ,  G11B5/3146 ,  G11B5/315

Abstract: A magnetic write pole structure that is configured to greatly simplify the manufacture of a perpendicular magnetic write head. The write head has a magnetic yoke that is oriented along a plane that is perpendicular to the direction of the data track. This allows the entire yoke to be formed in a single electroplating step, rather than being built up in several plated layers. The yoke can also be formed with magnetic side shields, or with a trailing or wrap around shield, which can be integral with the rest of the yoke and can be advantageously formed in the same, single electroplating step.

Abstract translation: 一种磁性写入磁极结构，其被配置为极大地简化垂直磁性写入头的制造。 写头具有沿着垂直于数据轨道的方向的平面定向的磁轭。 这允许整个磁轭在单个电镀步骤中形成，而不是在几个电镀层中形成。 磁轭还可以形成有磁性侧屏蔽件，或者具有尾部或环绕屏蔽件，其可以与磁轭的其余部分成一体，并且可以有利地形成在相同的单个电镀步骤中。

公开(公告)号：US07382586B2

公开(公告)日：2008-06-03

申请号：US11177990

申请日：2005-07-07

Applicant: Matthew Joseph Carey ,  Jeffrey Robinson Childress ,  James L. Nix ,  Stefan Maat ,  Ian Robson McFadyen

Inventor： Matthew Joseph Carey ,  Jeffrey Robinson Childress ,  James L. Nix ,  Stefan Maat ,  Ian Robson McFadyen

IPC: G11B5/39

CPC classification number: H01F10/3272 ,  B82Y25/00 ,  B82Y40/00 ,  G11B5/3932 ,  H01F10/16 ,  H01F10/30 ,  H01F41/306 ,  H01L43/08 ,  H01L43/12

Abstract: A magnetoresistive sensor having a self biased free layer. The free layer is constructed upon an underlayer that has been treated by a surface texturing process that configures the underlayer with an anisotropic roughness that induces a magnetic anisotropy in the free layer. The treated layer underlying the free layer can be a spacer layer sandwiched between the free layer and pinned layer or can be a separate underlayer formed opposite the spacer layer. Alternatively, the texturing of an underlayer can be used to induce a magnetic anisotropy in a bias layer that is separated from the free layer by an orthogonal coupling layer. This self biasing of the free layer induced by texturing can also be used in conjunction with biasing from a hard-bias structure.

Abstract translation: 具有自偏置自由层的磁阻传感器。 自由层被构造在已经通过表面纹理化处理处理的底层上，该表面构造过程用在各自自由层中引起磁各向异性的各向异性粗糙度来构造底层。 自由层下面的处理层可以是夹在自由层和被钉扎层之间的间隔层，或者可以是与间隔层相对形成的单独的下层。 或者，底层的纹理化可以用于在通过正交耦合层与自由层分离的偏压层中引起磁各向异性。 由纹理引起的自由层的这种自偏压也可以与来自硬偏压结构的偏压结合使用。

公开(公告)号：US20080112080A1

公开(公告)日：2008-05-15

申请号：US11598419

申请日：2006-11-13

Applicant: Byron Hassberg Lengsfield ,  Ian Robson McFadyen ,  James L. Nix ,  James Terrence Olson ,  Petrus Antonius Van Der Heijden ,  Bruce Wilson

Inventor： Byron Hassberg Lengsfield ,  Ian Robson McFadyen ,  James L. Nix ,  James Terrence Olson ,  Petrus Antonius Van Der Heijden ,  Bruce Wilson

IPC: G11B5/127

CPC classification number: G11B5/3123 ,  G11B5/1278 ,  G11B5/17 ,  G11B5/3143

Abstract: A write head for perpendicular magnetic recording having a write pole and first and second return poles. The write head can include a first magnetomotive force source for delivering a magnetomotive force to the first return pole and the write pole and a second magnetomotive force source for delivering magnetomotive force to the second return pole and the write pole. The first and second magnetomotive force sources can be operated independently of one another so that different relative amounts of magnetomotive force can be applied to the first and second return poles. A trailing magnetic shield can be connected with one of the return poles, such as the second return poles, and the variation in magnetomotive force can be used to increase the amount of flux flowing through the trailing shield when increased field gradient is desired (such as when writing a transition), and to decrease the amount of flux through the trailing shield when decreased field gradient and increased write field are desired (such as when writing a long magnetic section on a magnetic medium).

Abstract translation: 用于垂直磁记录的写头，具有写极和第一和第二返回极。 写头可以包括用于将磁动势传递到第一返回极和写极的第一磁动势源和用于将磁动势传递到第二返回极和写极的第二磁动势力源。 第一和第二磁动势源可以彼此独立地操作，使得可以将不同的相对量的磁动势施加到第一和第二返回极。 拖尾磁屏蔽可以与诸如第二返回极中的一个返回极连接，并且当需要增加磁场梯度时，可以使用磁动势的变化来增加流过后屏蔽的磁通量（例如 当写入转换时），并且当需要减小的场梯度和增加的写入场（例如当在磁介质上写入长磁场时）时，减小通过后屏蔽的通量的量。

公开(公告)号：US20080100964A1

公开(公告)日：2008-05-01

申请号：US11553215

申请日：2006-10-26

Applicant: Eric Edward Fullerton ,  Stefan Maat ,  Ian Robson McFadyen ,  Jan-Ulrich Thiele

Inventor： Eric Edward Fullerton ,  Stefan Maat ,  Ian Robson McFadyen ,  Jan-Ulrich Thiele

IPC: G11B5/82 ,  G11B5/65

CPC classification number: G11B5/64 ,  G11B5/1278 ,  G11B5/3103

Abstract: A magnetic recording disk drive has a bilayer recording medium of a high-anisotropy recording layer and an exchange-coupled antiferromagnetic-to-ferromagnetic (AF-F) transition layer. The transition layer has an AF-F transition temperature (TAF-F) that decreases relatively rapidly with increasing applied magnetic field. Thus the transition layer has a transition field HAF-F(T), which is the applied magnetic field required to transition the material from antiferromagnetic to ferromagnetic at temperature T without the need to heat the layer. At ambient temperature and in the absence of HW, the transition layer is antiferromagnetic and the switching field H0 of the bilayer is just the H0 of the high-anisotropy recording layer, which is typically much higher than HW. In the presence of the write field HW the transition layer transitions from antiferromagnetic to ferromagnetic so that data can be written to the recording by the mere application of the write field HW without the need to heat the transition layer or recording layer. The transition layer may be formed of Fe(RhM), where M is an element selected from V, Mn, Au and Ni.

Abstract translation: 磁记录盘驱动器具有高各向异性记录层和交换耦合的反铁磁到铁磁（AF-F）过渡层的双层记录介质。 过渡层具有随着施加的磁场增加而相对快速地减小的AF-F转变温度（T AF AF F F）。 因此，过渡层具有过渡场H AF-F（T），其是在温度T下将材料从反铁磁转变为铁磁所需的施加磁场，而不需要加热该层。 在环境温度下和在不存在的情况下，过渡层是反铁磁性的，并且双层的开关场H 0正好是H

公开(公告)号：US07212379B2

公开(公告)日：2007-05-01

申请号：US10815286

申请日：2004-03-31

Applicant: Yimin Hsu ,  Quang Le ,  Jui-Lung Li ,  Ian Robson McFadyen ,  James Lamar Nix ,  Neil Leslie Robertson ,  Mason Lamar Williams, III

Inventor： Yimin Hsu ,  Quang Le ,  Jui-Lung Li ,  Ian Robson McFadyen ,  James Lamar Nix ,  Neil Leslie Robertson ,  Mason Lamar Williams, III

IPC: G11B5/31

CPC classification number: G11B5/3146 ,  G11B5/1278 ,  G11B5/1872 ,  G11B5/3116

Abstract: A magnetic write head for use in perpendicular magnetic data recording. The write head includes a write pole and a trailing shield having a tapered surface. A return pole stitched to the trailing shield is magnetically connected with the write pole at a location away from the air bearing surface (ABS).

Abstract translation: 用于垂直磁数据记录的磁写头。 写头包括具有锥形表面的写入极和后屏蔽。 缝合到后挡板的返回杆在远离空气轴承表面（ABS）的位置处与写入磁极磁连接。

公开(公告)号：US06944937B2

公开(公告)日：2005-09-20

申请号：US10611623

申请日：2003-06-30

Applicant: Richard Hsiao ,  James D. Jarratt ,  Emo Hilbrand Klaassen ,  Ian Robson McFadyen ,  Timothy J. Moran

Inventor： Richard Hsiao ,  James D. Jarratt ,  Emo Hilbrand Klaassen ,  Ian Robson McFadyen ,  Timothy J. Moran

IPC: G11B5/00 ,  G11B5/33 ,  G11B5/39 ,  G11B5/40 ,  G11B5/455 ,  G11B33/10 ,  G11B5/127 ,  H04R31/00

CPC classification number: B82Y10/00 ,  G11B5/33 ,  G11B5/3967 ,  G11B5/40 ,  G11B5/455 ,  G11B33/10 ,  G11B2005/0013 ,  Y10T29/49032 ,  Y10T29/49036 ,  Y10T29/49039 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49071 ,  Y10T29/49073 ,  Y10T29/49078

Abstract: The present invention provides a method of manufacturing a magnetoresistive read head which reduces electrostatic discharge and allows measurement of gap resistances in the head.

Abstract translation: 本发明提供一种制造磁阻读头的方法，其减少了静电放电并允许测量磁头中的间隙电阻。