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：US07474513B1

公开(公告)日：2009-01-06

申请号：US11169387

申请日：2005-06-29

申请人： John P. Nibarger ,  Richard H. Dee

发明人： John P. Nibarger ,  Richard H. Dee

IPC分类号： G11B5/39

CPC分类号： G11B5/40 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3906 ,  G11B5/3909 ,  G11B2005/3996

摘要： A magneto-resistive (MR) transducer is capable of reading data signals magnetically recorded on a tape. The transducer includes a head-tape interface (HTI) and a MR sensor adjacent to the HTI. An electro-static discharge (ESD) element is coupled to the MR sensor, which is adapted to provide an electrical path from the MR sensor to a lower potential structure.

摘要翻译： 磁阻（MR）传感器能够读取磁性记录在磁带上的数据信号。 换能器包括头带接口（HTI）和邻近HTI的MR传感器。 静电放电（ESD）元件耦合到MR传感器，其适于提供从MR传感器到较低电位结构的电路径。

公开(公告)号：US20080266711A1

公开(公告)日：2008-10-30

申请号：US11740991

申请日：2007-04-27

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

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

IPC分类号： G11B15/60 ,  G11B5/127

CPC分类号： G11B5/00821 ,  G11B5/40 ,  G11B15/60

摘要： A tape head for use with a magnetic tape includes a support structure that has a tape bearing surface that is configured to engage the magnetic tape as the magnetic tape passes over the support structure. The support structure is made of a first material having a first hardness. The tape head further includes a transducer element having an interface surface for reading from and/or writing to the magnetic tape as the magnetic tape passes over the tape bearing surface. The tape head also includes a protective layer that substantially covers the interface surface, the protective layer being made of a second material having a second hardness that is at least as hard as the first hardness of the first material.

摘要翻译： 用于磁带的磁带头包括支撑结构，该支撑结构具有带状表面，该磁带轴承表面构造成当磁带通过支撑结构时与磁带接合。 支撑结构由具有第一硬度的第一材料制成。 带磁头还包括一个换能器元件，当磁带通过磁带支承表面时，具有用于从磁带读取和/或写入磁带的接口表面。 带头还包括基本覆盖界面表面的保护层，保护层由具有至少与第一材料的第一硬度一样硬度的第二硬度的第二材料制成。

公开(公告)号：US07382585B1

公开(公告)日：2008-06-03

申请号：US11241343

申请日：2005-09-30

申请人： John P. Nibarger ,  Francis X. Campos ,  Larry E. Daby

发明人： John P. Nibarger ,  Francis X. Campos ,  Larry E. Daby

IPC分类号： G11B5/33

CPC分类号： G11B5/39 ,  G11B5/00878 ,  G11B5/3948 ,  G11B5/397 ,  G11B5/398

摘要： A magnetic head for writing data to and reading data from a magnetic recording medium includes an inductive-type writer, an anisotropic magneto-resistive (AMR) reader, and a giant magneto-resistive (GMR) reader. The AMR reader is used to read data from “high magnetic flux” recording mediums which have been recorded for use with AMR sensors. The GMR reader is used to read data from “low magnetic flux” recording mediums which have been recorded for use with GMR sensors. As such, the magnetic head provides for backward compatibility between the previously prevalent “high magnetic flux” recording mediums and the expected future prevalent “low magnetic flux” recording mediums. The magnetic head may be configured such that the writer and the AMR and GMR readers share sensor shields in various configurations in order to carry out their writing and reading functions.

摘要翻译： 用于将数据写入和从磁记录介质读取数据的磁头包括电感式写入器，各向异性磁阻（AMR）读取器和巨磁阻（GMR）读取器。 AMR读卡器用于从AMR传感器使用的“高磁通量”记录介质中读取数据。 GMR读取器用于读取已记录用于GMR传感器的“低磁通量”记录介质中的数据。 因此，磁头提供了先前普遍存在的“高磁通”记录介质与预期的未来普遍的“低磁通”记录介质之间的向后兼容性。 磁头可以被配置为使得写入器和AMR和GMR读取器共享各种配置的传感器屏蔽，以便执行其写入和读取功能。

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。