公开(公告)号：US07118814B1

公开(公告)日：2006-10-10

申请号：US10791257

申请日：2004-03-02

申请人： Carl Stephen Arnold ,  Edward Virgil Denison ,  John P. Nibarger ,  Carl A. Helms

发明人： Carl Stephen Arnold ,  Edward Virgil Denison ,  John P. Nibarger ,  Carl A. Helms

IPC分类号： G11B5/127 ,  G11B5/39

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3932 ,  G11B2005/3996 ,  Y10T428/1143 ,  Y10T428/1171

摘要： An apparatus and method for step-stabilization of giant magnetoresistive (GMR) based read heads are provided. With the apparatus and method, gratings or periodic structures are generated in the underlayer of the magnetoresistive (MR) sensor stack and the edges, or “steps”, in these structures are the magnetically active features. These “steps” are oriented approximately parallel to the desired bias direction and provide a restoring force towards the bias direction for any perturbations, whether intrinsic or extrinsic. In the case of a GMR sensor, where the easy axis is parallel to the permanent magnet set direction, these stabilizer steps are oriented parallel to the magnetization direction of the permanent magnets.

摘要翻译： 提供了一种用于基于巨磁阻（GMR）的读头的步进稳定的装置和方法。 利用该装置和方法，在磁阻（MR）传感器堆叠的底层中产生光栅或周期性结构，并且在这些结构中的边缘或“台阶”是磁性活动特征。 这些“步骤”大致平行于期望的偏置方向定向，并且对于任何扰动（无论是内在的还是外在的）提供朝向偏置方向的恢复力。 在容易轴平行于永磁体设定方向的GMR传感器的情况下，这些稳定器台阶与永久磁铁的磁化方向平行。

公开(公告)号：US07495871B1

公开(公告)日：2009-02-24

申请号：US11190040

申请日：2005-07-26

申请人： John P. Nibarger ,  Edward V. Denison ,  Carl Anthony Helms ,  Carl Stephen Arnold

发明人： John P. Nibarger ,  Edward V. Denison ,  Carl Anthony Helms ,  Carl Stephen Arnold

IPC分类号： G11B5/127

CPC分类号： G11B5/398 ,  B82Y25/00 ,  G01R33/093 ,  G01R33/096 ,  G11B5/3932 ,  H01L43/08 ,  H01L43/12

摘要： A magneto-resistive sensor head and a method of manufacturing the magneto-resistive sensor head. The magneto-resistive sensor head includes a first lead and a second lead. A magneto-resistive layer and a biasing layer are disposed between the first lead and the second lead. A grating is disposed in the magneto-resistive layer. The topography of the biasing layer is unaffected by the presence of the grating.

摘要翻译： 磁阻式传感器头及其制造方法。 磁阻传感器头包括第一引线和第二引线。 磁阻层和偏置层设置在第一引线和第二引线之间。 光栅设置在磁阻层中。 偏置层的形貌不受光栅的存在的影响。

公开(公告)号：US07586710B2

公开(公告)日：2009-09-08

申请号：US11939722

申请日：2007-11-14

申请人： Charles Partee ,  John P. Nibarger

发明人： Charles Partee ,  John P. Nibarger

IPC分类号： G11B21/02

CPC分类号： G11B5/581

摘要： A tape drive apparatus for reading and writing data on a magnetic tape includes at least one transducer that interacts with the magnetic tape. A temperature control element is positioned to thermally expand the transducer. A control system controls the amount of current supplied to the temperature control element. A sensing circuit senses the distance between the transducer and the data storage tape. The system generates a spacing signal indicative of the sensed distance and is stored as spacing data. A temperature control element is controlled based upon spacing data to adjust the spacing between the transducer and the tape. The temperature control element may be controlled based upon a fixed adjustment or empirical data. A method is disclosed for controlling spacing between the transducer and a magnetic storage tape by heating the transducer head to cause thermal expansion and reduce pole tip recession.

摘要翻译： 用于在磁带上读取和写入数据的磁带驱动装置包括与磁带相互作用的至少一个换能器。 定位温度控制元件以使换能器热膨胀。 控制系统控制提供给温度控制元件的电流量。 感测电路感测换能器与数据存储带之间的距离。 系统产生指示感测到的距离的间隔信号，并作为间隔数据存储。 基于间隔数据来控制温度控制元件，以调节换能器和带之间的间距。 可以基于固定调整或经验数据来控制温度控制元件。 公开了一种用于通过加热换能器头以引起热膨胀并减小极尖衰退来控制换能器与磁存储带之间的间隔的方法。

公开(公告)号：US08922955B1

公开(公告)日：2014-12-30

申请号：US11447622

申请日：2006-06-06

申请人： John P. Nibarger ,  Ricky L. Ewasko

发明人： John P. Nibarger ,  Ricky L. Ewasko

IPC分类号： G11B5/127

CPC分类号： G11B5/3916 ,  G11B2005/3996

摘要： A magnetic sensor including a first layer that is a pinned layer, the first layer having a first edge. The magnetic sensor includes a second layer that is a non-magnetic metal layer, the second layer having a second edge corresponding to the first edge. The second layer is adjacent the first layer. The magnetic sensor includes a third layer that is a free layer, the third layer having a third edge corresponding to the first edge and the second edge. The third layer is adjacent the second layer. The magnetic sensor also includes a fourth layer that is a flux guide layer. The fourth layer is adjacent the third layer. The fourth layer extends outwardly from the third layer relative to the first layer and the second layer.

摘要翻译： 一种磁传感器，包括作为被钉扎层的第一层，所述第一层具有第一边缘。 磁传感器包括作为非磁性金属层的第二层，第二层具有对应于第一边缘的第二边缘。 第二层与第一层相邻。 磁传感器包括作为自由层的第三层，第三层具有对应于第一边缘和第二边缘的第三边缘。 第三层与第二层相邻。 磁传感器还包括作为磁通引导层的第四层。 第四层与第三层相邻。 第四层相对于第一层和第二层从第三层向外延伸。

公开(公告)号：US07827674B2

公开(公告)日：2010-11-09

申请号：US12133454

申请日：2008-06-05

申请人： John P. Nibarger ,  Herbert House

发明人： John P. Nibarger ,  Herbert House

IPC分类号： G11B5/127 ,  H04R31/00

CPC分类号： G11B5/3106 ,  G11B5/00817 ,  G11B5/398 ,  G11B5/40 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

摘要： A method for providing a giant magneto-resistive (GMR) sensor for use in sensing magnetic flux is provided. The method comprises positioning a layer of Cu material between first and second layers of a specified ferromagnetic material. The respective end surfaces of the Cu layer and the first and second layers are initially located in a common plane and in a co-planar relationship with one another. The method further comprises removing an amount of material from the copper layer to form a new end surface thereof that is selectively spaced apart from the common plane and applying a protective coating to the new end surface of the Cu layer to inhibit corrosion of the Cu layer.

摘要翻译： 提供了一种用于提供用于感测磁通量的巨磁阻（GMR）传感器的方法。 该方法包括将Cu材料层定位在特定铁磁材料的第一和第二层之间。 Cu层和第一层和第二层的相应端面最初位于公共平面中并且彼此处于共面关系。 该方法还包括从铜层去除一定量的材料以形成与公共平面选择性间隔的新的端面，并向Cu层的新端面施加保护涂层以抑制Cu层的腐蚀 。

公开(公告)号：US07746596B2

公开(公告)日：2010-06-29

申请号：US11619330

申请日：2007-01-03

申请人： John P. Nibarger ,  Edward V. Denison

发明人： John P. Nibarger ,  Edward V. Denison

IPC分类号： G11B5/584 ,  G11B5/29 ,  G11B5/265 ,  G11B5/187

CPC分类号： G11B5/588 ,  G11B5/584

摘要： A linear tape drive system includes a tape having a path direction, a data track having data transitions at an azimuthal orientation relative to the path direction, and a servo track having servo positioning transitions. A linear tape drive module is configured to read and/or write to the data track at the azimuthal orientation and read the servo positioning transitions.

摘要翻译： 线性磁带驱动系统包括具有路径方向的磁带，具有相对于路径方向的方位取向的数据转换的数据磁道以及具有伺服定位转换的伺服磁道。 线性磁带驱动器模块被配置为以方位取向读取和/或写入数据磁道并读取伺服定位转换。

公开(公告)号：US07190539B1

公开(公告)日：2007-03-13

申请号：US11025699

申请日：2004-12-29

申请人： John P. Nibarger

发明人： John P. Nibarger

IPC分类号： G11B5/02

CPC分类号： G11B5/02 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/1278 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A heat-assisted magnetic recorder for magnetically recording information onto a recording medium having a given recording coercive field includes an electron beam generator and a magnetic recording head. The electron beam generator directs an electron beam onto the recording medium in order to locally heat a portion of the recording medium such that the heated recording medium portion has a recording coercive field lower than the given recording coercive field. The magnetic recording head generates a magnetic recording field having an intensity greater than the recording coercive field of the heated recording medium portion in order to magnetically record information onto the heated recording medium portion. The electron beam generator includes a plurality of carbon nanotubes (CNTs) embedded in nanoholes of an anodic alumina template for generating the electron beam. A heat-assisted magnetic recording method is associated with the heat-assisted magnetic recorder.

摘要翻译： 用于将信息磁记录到具有给定记录矫顽场的记录介质上的热辅助磁记录器包括电子束发生器和磁记录头。 电子束发生器将电子束引导到记录介质上，以便局部加热记录介质的一部分，使得加热的记录介质部分具有低于给定的记录矫顽场的记录矫顽场。 磁记录头产生具有大于加热的记录介质部分的记录矫顽场的强度的磁记录场，以将信​​息磁记录到加热的记录介质部分上。 电子束发生器包括嵌入阳极氧化铝模板的纳米孔中的多个碳纳米管（CNT），用于产生电子束。 热辅助磁记录方法与热辅助磁记录器相关联。

公开(公告)号：US08867176B1

公开(公告)日：2014-10-21

申请号：US11447636

申请日：2006-06-06

申请人： John P. Nibarger ,  Ricky L. Ewasko

发明人： John P. Nibarger ,  Ricky L. Ewasko

IPC分类号： G11B5/33

CPC分类号： G11B5/398 ,  G11B5/3106

摘要： A corrosion-resistant magnetic sensor and a method for making the corrosion-resistant magnetic sensor. The magnetic sensor includes a first layer that is a pinned layer, the first layer having a first edge. The magnetic sensor also includes a second layer that can be a non-magnetic metal layer, the second layer having a second edge corresponding to the first edge, wherein the second layer is adjacent the first layer. The magnetic sensor also has a third layer that can be a free layer, the third layer having a third edge which projects outwardly relative to the first edge and the second edge.

摘要翻译： 耐腐蚀磁传感器及其制造方法。 磁传感器包括作为被钉扎层的第一层，第一层具有第一边缘。 磁传感器还包括可以是非磁性金属层的第二层，第二层具有对应于第一边缘的第二边缘，其中第二层与第一层相邻。 磁传感器还具有可以是自由层的第三层，第三层具有相对于第一边缘和第二边缘向外突出的第三边缘。

公开(公告)号：US20090244773A1

公开(公告)日：2009-10-01

申请号：US12054920

申请日：2008-03-25

申请人： John P. Nibarger ,  Anand V. Lakshmikumaran

发明人： John P. Nibarger ,  Anand V. Lakshmikumaran

IPC分类号： G11B15/60

CPC分类号： G11B15/28 ,  G11B15/60 ,  G11B15/67

摘要： A method for counteracting longitudinal oscillations in a magnetic tape as it passes over a head in a tape drive system includes the steps of passing the magnetic tape over the head, detecting the occurrence of longitudinal oscillations in the magnetic tape, and generating counteractive longitudinal oscillations in the magnetic tape that are substantially 180° out of phase with the longitudinal oscillations to substantially cancel the longitudinal oscillations.

摘要翻译： 一种用于抵消磁带在磁带驱动系统中通过磁头时的纵向振荡的方法包括以下步骤：将磁带穿过磁头，检测磁带中的纵向振荡的发生，并产生相应的纵向振荡 该磁带与纵向振荡基本上为180°相位，以基本上抵消纵向振荡。

公开(公告)号：US20090213495A1

公开(公告)日：2009-08-27

申请号：US12434504

申请日：2009-05-01

申请人： Kevin D. McKinstry ,  John P. Nibarger

发明人： Kevin D. McKinstry ,  John P. Nibarger

IPC分类号： G11B5/127

CPC分类号： G01R33/093 ,  B82Y25/00 ,  G01R33/0005

摘要： The present invention provides apparatus and method for controlling the asymmetrical properties of the response of a magnetic sensor element to a magnetic field produced by the digital data in a magnetic storage device. The present invention also provides an apparatus and method for controlling the bias point of a magnetic field produced by a magnetic sensor element.

摘要翻译： 本发明提供了一种用于控制磁传感器元件对由磁存储装置中的数字数据产生的磁场的响应的不对称性质的装置和方法。 本发明还提供一种用于控制由磁性传感器元件产生的磁场的偏置点的装置和方法。