公开(公告)号：US06879471B2

公开(公告)日：2005-04-12

申请号：US10462957

申请日：2003-06-17

Applicant: Kevin R. Heim ,  Richard P. Larson ,  Daniel P. Burbank

Inventor： Kevin R. Heim ,  Richard P. Larson ,  Daniel P. Burbank

IPC: G11B5/127 ,  G11B5/33 ,  G11B5/39

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/3912 ,  G11B2005/3996

Abstract: A spin valve head configured to operate in a Current-In-Plane (CIP) mode is provided. The spin valve head has an air bearing surface (ABS) and a top and a bottom shield separated by a central region proximate the ABS. A sensor, positioned in the central region, has a proximal end and a distal end, with the proximal end forming a portion of the ABS. A permanent magnet is positioned in the central region and proximate the distal end of the sensor. The permanent magnet being separated from the sensor by a gap layer. The top shield, the bottom shield and the permanent magnet are electrically coupled together to allow for electrical testing of the spin valve head.

Abstract translation: 提供了一种配置成以电流平面（CIP）模式工作的自旋阀头。 自旋阀头具有空气轴承表面（ABS）以及由接近ABS的中心区分开的顶部和底部屏蔽。 定位在中心区域的传感器具有近端和远端，近端形成ABS的一部分。 永磁体位于中心区域并靠近传感器的远端。 永磁体通过间隙层与传感器分离。 顶部屏蔽，底部屏蔽和永久磁铁电耦合在一起，以允许自旋阀头的电气测试。

公开(公告)号：US06754947B2

公开(公告)日：2004-06-29

申请号：US09928783

申请日：2001-08-13

Applicant: Frank E. Stageberg ,  Kenneth P. Ash ,  James K. Price ,  Feng Wang ,  Elzbieta J. Haftek ,  Allan E. Schultz ,  Richard P. Larson

Inventor： Frank E. Stageberg ,  Kenneth P. Ash ,  James K. Price ,  Feng Wang ,  Elzbieta J. Haftek ,  Allan E. Schultz ,  Richard P. Larson

IPC: G11B5127

CPC classification number: G11B5/3967 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3153 ,  G11B5/3163 ,  Y10T29/49025 ,  Y10T29/49032 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49044

Abstract: A process of forming a two-piece pole for an inductive write head involves first forming a first pole piece having a width between opposite side surfaces defining a gap width of a transducing gap at an air bearing surface of the head. The process next involves forming a second pole piece having a first region remote from the air bearing surface and a second region extending from the first region toward the air bearing surface. The first region is wider than the width of the first pole piece. The second pole piece is formed so that at least a portion of the second region is contiguous a portion of the first pole piece and so that no sharp external corners exist between the first pole tip piece and the second pole piece within a pole tip region of the head.

Abstract translation: 形成用于感应写头的双片极的过程包括首先形成第一极片，该第一极片在相对的侧表面之间具有限定在头部的空气支承表面处的换能间隙的间隙宽度的宽度。 该过程接下来涉及形成具有远离空气支承表面的第一区域的第二极靴和从第一区域向空气支承表面延伸的第二区域。 第一区域比第一极靴的宽度宽。 第二极靴被形成为使得第二区域的至少一部分邻接第一极靴的一部分，并且使得在第一极靴末端区域和第二极靴区域内的第一极尖端部件和第二极靴之间不存在尖锐的外角 头部。

公开(公告)号：US07573682B2

公开(公告)日：2009-08-11

申请号：US11154223

申请日：2005-06-16

Applicant: Ladislav R. Pust ,  Michael T. Johnson ,  Richard P. Larson ,  Thu-Van T. Nguyen ,  David C. Seets ,  William P. Vavra

Inventor： Ladislav R. Pust ,  Michael T. Johnson ,  Richard P. Larson ,  Thu-Van T. Nguyen ,  David C. Seets ,  William P. Vavra

IPC: G11B5/56

CPC classification number: G11B5/3133 ,  G11B5/3116 ,  G11B5/6064 ,  G11B5/607

Abstract: A transducing device having a storage interface surface includes a writer having a pole tip region, a coil having a width positioned around the writer, and a heating element. The heating element extends to near the storage interface surface. A portion of the heating element is at least as wide as the coil. The heating element heats the writer in response to current flow through the heating element.

Abstract translation: 具有存储接口表面的转换装置包括具有极尖区域的写入器，具有位于写入器周围的宽度的线圈和加热元件。 加热元件延伸到存储界面附近。 加热元件的一部分至少与线圈一样宽。 加热元件响应于通过加热元件的电流而加热写入器。

公开(公告)号：US6003361A

公开(公告)日：1999-12-21

申请号：US944543

申请日：1997-10-07

Applicant: Nurul Amin ,  Lance E. Stover ,  Richard P. Larson ,  Gregory S. Mowry

Inventor： Nurul Amin ,  Lance E. Stover ,  Richard P. Larson ,  Gregory S. Mowry

IPC: B24B37/013 ,  B24B37/04 ,  B24B49/10 ,  G11B5/31 ,  G11B5/39 ,  G11B5/60 ,  G01N3/56 ,  B24B49/00 ,  G01N19/02 ,  G11B5/127

CPC classification number: G11B5/6005 ,  B24B37/013 ,  B24B37/048 ,  B24B49/10 ,  G11B5/3116 ,  G11B5/3166 ,  G11B5/39 ,  G11B5/3103 ,  G11B5/398 ,  Y10T29/49037 ,  Y10T29/49048

Abstract: A system for determining a height of a sensor includes a first triangle, a second triangle, a first rectangle, and a second rectangle. The sensor is positioned in a first plane and has a lapping surface. The first triangle, the second triangle, the first rectangle, and the second rectangle are each positioned in the first plane. A first point of the first triangle is positioned below the lapping surface of the sensor and a second point and a third point of the first triangle are positioned above the lapping surface of the sensor. A first point and a second point of the second triangle are positioned below the lapping surface of the sensor and a third point of the second triangle is positioned above the lapping surface of the sensor. A first portion of the first rectangle is positioned above the lapping surface of the sensor and a second portion is positioned below the lapping surface of the sensor. The second rectangle is positioned below the lapping surface of the sensor. A second plane in which the lapping surface of the sensor is located intersects the first triangle, the second triangle, the first rectangle, and the second rectangle. The height of the sensor is calculated through use of a pre-processing height of the sensor, a pre-processing width of the first and the second triangles, and a post-processing width of the first and the second triangles.

Abstract translation: 用于确定传感器的高度的系统包括第一三角形，第二三角形，第一矩形和第二矩形。 传感器位于第一平面中并具有研磨表面。 第一个三角形，第二个三角形，第一个矩形和第二个矩形都位于第一个平面中。 第一个三角形的第一点位于传感器的研磨表面下方，第一个三角形的第二个点和第三个点位于传感器研磨表面的上方。 第二个三角形的第一点和第二点位于传感器的研磨表面下方，第二个三角形的第三个点位于传感器的研磨表面之上。 第一矩形的第一部分位于传感器的研磨表面上方，第二部分位于传感器的研磨表面下方。 第二个矩形位于传感器的研磨表面下方。 传感器的研磨表面所在的第二平面与第一个三角形，第二个三角形，第一个矩形和第二个矩形相交。 通过使用传感器的预处理高度，第一和第二三角形的预处理宽度以及第一和第二三角形的后处理宽度来计算传感器的高度。

公开(公告)号：US07587809B2

公开(公告)日：2009-09-15

申请号：US10050236

申请日：2002-01-15

Applicant: Dimitar V. Dimitrov ,  Daniel P. Burbank ,  Paul E. Anderson ,  Richard P. Larson ,  Kenneth P. Naughton ,  Insik Jin

Inventor： Dimitar V. Dimitrov ,  Daniel P. Burbank ,  Paul E. Anderson ,  Richard P. Larson ,  Kenneth P. Naughton ,  Insik Jin

IPC: G11B5/187 ,  C23F1/00

CPC classification number: G11B5/398 ,  G11B5/3116 ,  G11B5/3903 ,  H04R15/00 ,  Y10T29/49032 ,  Y10T29/49041 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49052

Abstract: A magnetoresistive reader having a sensor, current contacts with low parasitic resistance and a top shield with substantially planar topology is fabricated by first defining a stripe height back edge of the sensor. Next, a reader width of the sensor is defined. The current contacts are deposited to a thickness such that a top surface of the current contacts is substantially level with a top surface of the sensor. The top shield is deposited over the sensor and the current contacts. Defining the stripe height back edge prior to the reader width results in current contacts with low parasitic resistance and inhibits the formation of magnetic domains in the top shield.

Abstract translation: 具有传感器的磁阻读取器，具有低寄生电阻的电流触点和具有基本上平面拓扑的顶部屏蔽件通过首先限定传感器的条带高度后缘来制造。 接下来，定义传感器的读取器宽度。 电流触点被沉积成使得电流触点的顶表面与传感器的顶表面基本上平齐的厚度。 顶部屏蔽层沉积在传感器和电流触点上。 在读取器宽度之前定义条纹高度后缘导致具有低寄生电阻的当前触点，并且抑制顶部屏蔽中的磁畴的形成。

公开(公告)号：US06441994B1

公开(公告)日：2002-08-27

申请号：US09566560

申请日：2000-05-08

Applicant: Feng Wang ,  Richard P. Larson ,  Yuming Zhou ,  Patrick J. Ryan

Inventor： Feng Wang ,  Richard P. Larson ,  Yuming Zhou ,  Patrick J. Ryan

IPC: G11B517

CPC classification number: G11B5/1278 ,  G11B5/17 ,  G11B5/3103 ,  G11B5/3967

Abstract: A magnetic recording head has a top pole, a write gap layer, a shared pole, and conductive coils. The shared pole has an air bearing surface, a top surface substantially normal to the air bearing surface, and a recess in the top surface extending across the top surface parallel to the air bearing surface. The shared pole is separated from the top pole at the air bearing surface by the write gap layer, and directly contacts the top pole at a region of the writer distal from the air bearing surface. Wrapped around the top pole are the conductive coils, a portion of which is positioned in the recess of the shared pole between the top pole and the shared pole.

Abstract translation: 磁记录头具有顶极，写间隙层，共享极和导电线圈。 共享极具有空气轴承表面，基本上垂直于空气轴承表面的顶表面，以及在顶表面中平行于空气轴承表面延伸的凹部。 共用极杆通过写入间隙层与空气轴承表面的顶极分离，并且在远离空气支承表面的作者的区域处直接接触顶极。 围绕顶极缠绕的是导电线圈，其一部分位于顶极和共享极之间的共享极的凹部中。

公开(公告)号：US06301076B1

公开(公告)日：2001-10-09

申请号：US09246448

申请日：1999-02-09

Applicant: Frank E. Stageberg ,  Kenneth P. Ash ,  James K. Price ,  Feng Wang ,  Elzbieta J. Haftek ,  Allan E. Schultz ,  Richard P. Larson

Inventor： Frank E. Stageberg ,  Kenneth P. Ash ,  James K. Price ,  Feng Wang ,  Elzbieta J. Haftek ,  Allan E. Schultz ,  Richard P. Larson

IPC: G11B5147

CPC classification number: G11B5/3967 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3153 ,  G11B5/3163 ,  Y10T29/49025 ,  Y10T29/49032 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49044

Abstract: A two-piece pole for an inductive write head has a first pole piece in the tip region contiguous the gap and confronting the other pole across the gap. The first pole piece has a width defining the gap width of the write head at the air bearing surface. A second pole piece is connected to the first pole piece and extends to the back gap. At least a portion of the second pole piece is connected to the first pole piece and has a width larger than the width of the first pole piece. The second pole piece means has surfaces within the pole tip region that intersect at external corners facing the gap, at least two surfaces of each of these external corners being joined at an obtuse angle so that none of said external corner is a sharp external corner, thereby minimizing fringe fields. In one form, a pole cap between the first and second pole pieces has a trapezoidal configuration forming the obtuse angles.

Abstract translation: 用于感应式写入头的两片式极头具有尖端区域中的与间隙连接的第一极片，并且将另一极对面跨越间隙。 第一极片具有限定写入头在空气支承表面处的间隙宽度的宽度。 第二极靴连接到第一极靴并延伸到后隙。 第二极靴的至少一部分连接到第一极靴，其宽度大于第一极靴的宽度。 第二极靴装置具有在极尖区域内的面向间隙的外角处的表面，这些外角中的每一个的至少两个表面以钝角连接，使得所述外角部都不是尖锐的外角， 从而最小化边缘场。 在一种形式中，第一和第二极片之间的极帽具有形成钝角的梯形构造。

公开(公告)号：US07403354B2

公开(公告)日：2008-07-22

申请号：US11068315

申请日：2005-02-28

Applicant: Ladislav R. Pust ,  Christopher J. Rea ,  Richard P. Larson

Inventor： Ladislav R. Pust ,  Christopher J. Rea ,  Richard P. Larson

IPC: G11B5/127

CPC classification number: G11B5/314 ,  G11B5/3136 ,  G11B5/6064 ,  G11B2005/0005

Abstract: A transducing device includes a writer having a pole tip region and a heater circuit. The heater circuit has a heating portion and a heater current return path. The heating portion has at least two branches positioned with respect to the writer so that current flowing through the at least two branches heat the writer. The heater current return path is electrically connected to the at least two branches of the heating portion near the pole tip region and includes an electrically conductive portion of the writer.

Abstract translation: 转换装置包括具有极尖区域和加热器电路的写入器。 加热器电路具有加热部分和加热器电流返回路径。 加热部分具有相对于写入器定位的至少两个分支，使得流过至少两个分支的电流加热写入器。 加热器电流返回路径电连接到靠近极尖区域的加热部分的至少两个分支，并且包括写入器的导电部分。

公开(公告)号：US5742995A

公开(公告)日：1998-04-28

申请号：US653617

申请日：1996-05-24

Applicant: Nurul Amin ,  Lance E. Stover ,  Richard P. Larson ,  Gregory S. Mowry

Inventor： Nurul Amin ,  Lance E. Stover ,  Richard P. Larson ,  Gregory S. Mowry

IPC: B24B37/013 ,  B24B37/04 ,  B24B49/10 ,  G11B5/31 ,  G11B5/39 ,  G11B5/60 ,  G11B5/42

CPC classification number: G11B5/6005 ,  B24B37/013 ,  B24B37/048 ,  B24B49/10 ,  G11B5/3116 ,  G11B5/3166 ,  G11B5/39 ,  G11B5/3103 ,  G11B5/398 ,  Y10T29/49037 ,  Y10T29/49048

Abstract: A system and method of determining a height of a sensor is disclosed. The sensor has an air bearing surface. The method includes determining a pre-processing width of a base of a first triangle, a top of a second triangle and a first and a second rectangle, all formed of the same material which forms the sensor. The air bearing surface of the magnetoresistive sensor, the base of the first triangle, the top of the second triangle and the first and second rectangles are then processed and simultaneously lapped. A post-lapping width of the base of the first triangle, the top of the second triangle and the first and second rectangles are then determined. The height of the sensor is then calculated through use of the pre-processing and post-lapping widths at the air bearing surfaces of the bases of the first triangle, the top of the second triangle and the first and second rectangles.

Abstract translation: 公开了一种确定传感器高度的系统和方法。 传感器具有空气轴承表面。 该方法包括确定由形成传感器的相同材料形成的第一三角形的基底，第二三角形的顶部以及第一和第二矩形的预处理宽度。 磁阻传感器的空气轴承表面，第一个三角形的底部，第二个三角形的顶部以及第一个和第二个矩形然后被处理并同时研磨。 然后确定第一个三角形的底部，第二个三角形的顶部以及第一个和第二个矩形的后研磨宽度。 然后通过在第一三角形的底部，第二三角形的顶部和第一和第二矩形的空气支承表面处使用预处理和后研磨宽度来计算传感器的高度。