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1. 发明授权

US06256176B1 Highly sensitive spin valve heads using a self-aligned demag-field balance element 失效
标题翻译：高灵敏度的自旋阀头采用自对准的场均衡元件
公开(公告)号：US06256176B1
公开(公告)日：2001-07-03
申请号：US09355784
申请日：1999-07-27
申请人： Sining Mao , Nurul Amin , Edward S. Murdock
发明人： Sining Mao , Nurul Amin , Edward S. Murdock
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3935 , G11B5/3938 , G11B2005/3996
摘要： A magnetic read head (30) for use in a magnetic data storage and retrieval system has a first current contact (40), a second current contact (42), a magnetoresistive read sensor (34), and a demagnetization field balance element (50). Positioned between the first and second current contacts (40, 42) are both the magnetoresistive read sensor (34) and the demagnetization field balance element (50). The demagnetization field balance element (50) is both electrically isolated from and magnetically coupled to the magnetoresistive read sensor (34).
摘要翻译：用于磁数据存储和检索系统的磁读头（30）具有第一电流触点（40），第二电流触点（42），磁阻读取传感器（34）和去磁场平衡元件（50））。位于第一和第二电流触头（40,42）之间的是磁阻读取传感器（34）和去磁场平衡元件（50）。去磁场平衡元件（50）与磁阻读取传感器（34）电隔离并磁耦合到磁阻读取传感器（34）。

2. 发明授权

US06462919B1 Spin valve sensor with exchange tabs 失效
标题翻译：带交换接头的旋转阀传感器
公开(公告)号：US06462919B1
公开(公告)日：2002-10-08
申请号：US09442798
申请日：1999-11-18
申请人： Anthony M. Mack , Sining Mao , Michael A. Seigler , Nurul Amin , Taras G. Pokhil , Ananth Naman , Jin Li , Zheng Gao , Edward S. Murdock , Jumna P. Ramdular , Timothy Radke
发明人： Anthony M. Mack , Sining Mao , Michael A. Seigler , Nurul Amin , Taras G. Pokhil , Ananth Naman , Jin Li , Zheng Gao , Edward S. Murdock , Jumna P. Ramdular , Timothy Radke
IPC分类号： G11B5127
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/3116 , G11B5/3163 , G11B5/3903 , G11B5/3932
摘要： A spin valve sensor is disclosed that comprises a first layer of ferromagnetic material and a second layer of ferromagnetic material. A first layer of non-ferromagnetic material is positioned between the first and second layers of ferromagnetic material. A pinning layer is positioned adjacent to the first layer of ferromagnetic material such that the pinning layer is in contact with the first layer of ferromagnetic material. The spin valve includes synthetic antiferromagnetic bias means extending over passive end regions of the second layer of ferromagnetic material for producing a longitudinal bias in the passive end regions of a level sufficient to maintain the passive end regions in a single domain state. A method for forming a spin valve sensor with exchange tabs is also disclosed.
摘要翻译：公开了一种自旋阀传感器，其包括第一层铁磁材料层和第二层铁磁材料层。第一层非铁磁材料位于第一和第二层铁磁材料之间。钉扎层定位成与第一铁磁材料层相邻，使得钉扎层与第一层铁磁材料接触。自旋阀包括在第二铁磁材料层的无源端区域上延伸的合成反铁磁偏压装置，用于在被动端区域产生足以将被动端区域维持在单一畴状态的水平面上的纵向偏压。还公开了一种用于形成具有交换接头的自旋阀传感器的方法。

3. 发明授权

US5764056A Nickel-manganese as a pinning layer in spin valve/GMR magnetic sensors 失效
标题翻译：镍锰作为自旋阀/ GMR磁传感器中的钉扎层
公开(公告)号：US5764056A
公开(公告)日：1998-06-09
申请号：US645645
申请日：1996-05-16
申请人： Sining Mao , Nurul Amin , Sunita B. Gangopadhyay , Edward S. Murdock
发明人： Sining Mao , Nurul Amin , Sunita B. Gangopadhyay , Edward S. Murdock
IPC分类号： G01R33/09 , G11B5/39 , H01F10/32 , H01F41/30 , H01L43/10 , G01R33/02 , G11B5/33 , H01L43/08 , G11B5/227
CPC分类号： B82Y25/00 , B82Y10/00 , B82Y40/00 , G01R33/093 , H01F10/324 , H01F10/3268 , H01F41/302 , H01L43/10 , G11B2005/3996
摘要： A spin valve sensor and a method of fabricating the same are disclosed. The spin valve sensor includes a first layer of ferromagnetic material and a second layer of ferromagnetic material, with the second layer of ferromagnetic material having a thickness of less than about 100 .ANG.. A first layer of non-ferromagnetic conducting material is positioned between the first and second layers of ferromagnetic material. A NiMn pinning layer is positioned adjacent to the second layer of ferromagnetic material such that the pinning layer is in contact with the second layer of ferromagnetic material, wherein the NiMn pinning layer has a thickness of less than about 200 .ANG. and provides a pinning field for pinning a magnetization of the second layer of ferromagnetic material in a first direction.
摘要翻译：公开了一种自旋阀传感器及其制造方法。自旋阀传感器包括铁磁材料的第一层和第二铁磁材料层，第二层铁磁材料的厚度小于约100埃。第一层非铁磁性导电材料位于第一和第二层铁磁材料之间。 NiMn钉扎层定位成与第二铁磁材料层相邻，使得钉扎层与第二层铁磁材料接触，其中NiMn钉扎层具有小于约200的厚度，并提供钉扎场，用于在第一方向上固定第二层铁磁材料的磁化。

4. 发明授权

US06548114B2 Method of fabricating a spin valve/GMR sensor having a synthetic antiferromagnetic layer pinned by Mn-alloy 有权
标题翻译：制造具有由Mn合金固定的合成反铁磁层的自旋阀/ GMR传感器的方法
公开(公告)号：US06548114B2
公开(公告)日：2003-04-15
申请号：US09907219
申请日：2001-07-17
申请人： Sining Mao , Anthony M. Mack , Brenda A. Everitt , Edward S. Murdock , Zheng Gao
发明人： Sining Mao , Anthony M. Mack , Brenda A. Everitt , Edward S. Murdock , Zheng Gao
IPC分类号： C23C1606
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/3903 , G11B2005/3996 , Y10S977/934 , Y10T29/49046
摘要： A method of fabricating a spin valve sensor includes sequentially depositing, without breaking vacuum, a seed layer and an antiferromagnetic layer. Sequentially depositing the seed layer and the antiferromagnetic layer includes depositing a seed layer on a substrate; depositing a Mn-alloy layer of the antiferromagnetic layer directly on top of the seed layer; and depositing a buffer layer of the antiferromagnetic layer directly on top of the Mn-alloy layer. The seed layer, the Mn-alloy layer and the buffer layer are annealed. After annealing, a portion of the buffer layer is etched and a synthetic antiferromagnetic layer is deposited on top of the buffer layer. A spacer layer is deposited on top of the synthetic antiferromagnetic layer, and a free layer is deposited on top of the spacer layer.
摘要翻译：制造自旋阀传感器的方法包括在不破坏真空的情况下依次沉积种子层和反铁磁性层。顺序地沉积种子层和反铁磁性层包括将种子层沉积在基底上; 将反铁磁层的Mn合金层直接沉积在种子层的顶部; 并将反铁磁层的缓冲层直接沉积在Mn合金层的顶部上。种子层，Mn合金层和缓冲层退火。在退火之后，缓冲层的一部分被蚀刻，并且合成的反铁磁层沉积在缓冲层的顶部上。间隔层沉积在合成反铁磁性层的顶部上，并且自由层沉积在间隔层的顶部上。

5. 发明授权

US06738236B1 Spin valve/GMR sensor using synthetic antiferromagnetic layer pinned by Mn-alloy having a high blocking temperature 有权
标题翻译：旋转阀/ GMR传感器使用由具有高阻塞温度的Mn合金固定的合成反铁磁层
公开(公告)号：US06738236B1
公开(公告)日：2004-05-18
申请号：US09306484
申请日：1999-05-06
申请人： Sining Mao , Anthony M. Mack , Brenda A. Everitt , Edward S. Murdock , Zheng Gao
发明人： Sining Mao , Anthony M. Mack , Brenda A. Everitt , Edward S. Murdock , Zheng Gao
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/3903 , G11B2005/3996 , Y10S977/934 , Y10T29/49046
摘要： Disclosed are a spin valve magnetoresistive sensor and methods of fabricating the same. The sensor includes a free layer, a synthetic antiferromagnetic. (SAF) layer, a spacer layer positioned between the free layer and the SAF layer, and a Mn-based antiferromagnetic pinning layer in contact with the SAF layer. The SAF layer includes first and second ferromagnetic CoFe layers and an Ru spacer layer positioned between and directly in contact with the first and second CoFe ferromagnetic layers.
摘要翻译：公开了一种自旋阀磁阻传感器及其制造方法。传感器包括自由层，合成反铁磁体。（SAF）层，位于自由层和SAF层之间的间隔层，以及与SAF层接触的Mn基反铁磁钉扎层。 SAF层包括位于第一和第二CoFe铁磁层之间并直接与第一和第二CoFe铁磁层接触的第一和第二铁磁CoFe层和Ru间隔层。

6. 发明授权

US6134090A Enhanced spin-valve/GMR magnetic sensor with an insulating boundary layer 有权
标题翻译：具有绝缘边界层的增强型自旋阀/ GMR磁传感器
公开(公告)号：US6134090A
公开(公告)日：2000-10-17
申请号：US153581
申请日：1998-09-15
申请人： Sining Mao , Edward S. Murdock
发明人： Sining Mao , Edward S. Murdock
IPC分类号： G01R33/09 , G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/3903 , G11B2005/3996
摘要： A spin valve sensor is constructed with an electrically conductive antiferromagnetic pinning layer. A first ferromagnetic layer is placed proximate the pinning layer. A second ferromagnetic layer is included with a non-ferromagnetic electrically conductive layer placed between the first and second ferromagnetic layers. A boundary layer of electrically insulating material is placed proximate to the second layer of ferromagnetic material opposite the non-ferromagnetic electrically conductive layer. Preferred embodiments exhibit an enhanced giant magnetoresistive (GMR) effect presumably due to scattering that is more specular at the interface with the electrically insulating material.
摘要翻译：自旋阀传感器由导电反铁磁钉扎层构成。第一铁磁层放置在钉扎层附近。第二铁磁层包含在放置在第一和第二铁磁层之间的非铁磁性导电层。电绝缘材料的边界层放置在与非铁磁性导电层相对的第二铁磁材料层附近。优选实施例表现出增强的巨磁阻（GMR）效应，大概是由于在与电绝缘材料的界面处更镜面的散射。

7. 发明授权

US5748412A Method and apparatus for protecting magnetoresistive sensor element from electrostatic discharge 失效
标题翻译：用于保护磁阻传感器元件免受静电放电的方法和装置
公开(公告)号：US5748412A
公开(公告)日：1998-05-05
申请号：US580059
申请日：1995-12-20
申请人： Edward S. Murdock , John C. Heitke , Kevin J. Schulz
发明人： Edward S. Murdock , John C. Heitke , Kevin J. Schulz
IPC分类号： G11B5/11 , G11B5/39 , G11B5/40 , G11B5/48 , G11B5/127
CPC分类号： G11B5/4853 , G11B5/11 , G11B5/3903 , G11B5/40
摘要： A magnetoresistive head assembly includes a magnetoresistive sensor element, detection circuitry and first and second electrical conductors electrically connecting the magnetoresistive sensor element and the detection circuitry. A device exhibiting a non-linear voltage-current relationship is electrically coupled between the first and second electrical conductors. The device has a resistance which varies in relationship to an electrical potential between the first and second electrical conductors.
摘要翻译：磁阻头组件包括磁阻传感器元件，检测电路和电连接磁阻传感器元件和检测电路的第一和第二电导体。表现出非线性电压 - 电流关系的装置电耦合在第一和第二电导体之间。该器件具有与第一和第二电导体之间的电位相关的电阻。

8. 发明授权

US06667616B1 Spin valve sensor having increased GMR ratio and decreased sensitivity to crosstalk noise 失效
标题翻译：旋转阀传感器具有增加的GMR比和降低的对串扰噪声的敏感性
公开(公告)号：US06667616B1
公开(公告)日：2003-12-23
申请号：US09380457
申请日：1999-09-02
申请人： Alexander M. Shukh , Edward S. Murdock , Anthony M. Mack
发明人： Alexander M. Shukh , Edward S. Murdock , Anthony M. Mack
IPC分类号： G01R3302
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/3903 , G11B2005/3996 , H01F10/3268 , H01F10/3295 , H01F41/325
摘要： A spin valve sensor comprising a ferromagnetic free layer, a ferromagnetic pinned layer, a layer of non-ferromagnetic material positioned between the free layer and the pinned layer, and an antitferromagnetic pinning layer positioned adjacent to the pinned layer such that the pinning layer is in direct contact with the pinned layer. The free layer comprises a multi-layer stack including a non-magnetic insulating spacer positioned between a first and a second ferromagnetic sublayer. The non-magnetic insulating spacer provides a specular electron scattering effect. The first and the second ferromagnetic sublayers each have passive end regions separated by a central active region. The spin valve sensor further includes bias means positioned between the first and the second ferromagnetic sublayers in the passive end regions.
摘要翻译：一种自旋阀传感器，包括铁磁性自由层，铁磁性钉扎层，位于自由层和钉扎层之间的非铁磁材料层，以及邻近被钉扎层定位的抗铁磁钉扎层，使得钉扎层处于与被钉扎层直接接触。自由层包括多层堆叠，其包括位于第一和第二铁磁子层之间的非磁性绝缘隔离物。非磁性绝缘间隔物提供镜面电子散射效应。第一和第二铁磁子层各自具有由中心有源区分隔的被动端区域。自旋阀传感器还包括位于被动端区域中的第一和第二铁磁子层之间的偏置装置。

9. 发明授权

US06621659B1 Recording head with throat height defined by nonmagnetic recess in shared pole 失效
标题翻译：记录头，喉部高度由共享杆上的非磁性凹槽限定
公开(公告)号：US06621659B1
公开(公告)日：2003-09-16
申请号：US09664270
申请日：2000-09-18
申请人： Alexander M. Shukh , Edward S. Murdock
发明人： Alexander M. Shukh , Edward S. Murdock
IPC分类号： G11B5147
CPC分类号： G11B5/0245
摘要： A giant magnetoresistance recording head includes a writer having a top pole, a shared pole, a conductive coil and a write gap region. The top pole includes a first top pole piece and a second top pole piece. The second top pole piece is formed at least in part over the first top pole piece and is recessed from the air bearing surface. The first top pole piece is formed over a top flat surface of the shared pole and is separated from the shared pole by the write gap region. The shared pole has a recess on the top surface. The recess is placed under the top pole and filled with a non-magnetic material. The non-magnetic recess in the shared pole defines the throat height of the writer.
摘要翻译：巨磁阻记录头包括具有顶极，共享极，导电线圈和写间隙区的写入器。顶杆包括第一顶极片和第二顶极片。第二顶极件至少部分地形成在第一顶极件上并且从空气轴承表面凹陷。第一顶极件形成在共享极的顶部平坦表面上，并且通过写入间隙区域与共享极分离。共享杆在顶面有一个凹槽。将凹槽置于顶极下方并填充非磁性材料。共享极柱中的非磁性凹槽定义了写入器的喉部高度。

10. 发明授权

US06396670B1 Reducing sensor temperature in magnetoresistive recording heads 有权
标题翻译：降低磁阻记录头中的传感器温度
公开(公告)号：US06396670B1
公开(公告)日：2002-05-28
申请号：US09600382
申请日：2000-07-14
申请人： Edward S. Murdock
发明人： Edward S. Murdock
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3136 , G11B5/332 , G11B5/3903 , G11B5/3919 , G11B5/40 , G11B2005/3996
摘要： A method and apparatus for dissipating heat generated in a sensor element of a vertical magnetoresistive recording head or flux guide magnetoresistive recording head having a recess formed in the lower and/or upper magnetic shields for enhancing efficiency during reading data from a magnetic medium. Heat is dissipated through a non-magnetic metal filler layer (10, 12) formed in the shield recesses (140) between an upper (2) or lower (6) metal shield and a sensor element (4) comprising a magnetoresistive head structure. The metal filler (10, 12) must be non-magnetic, must avoid an electrical short between the sensor element and the upper (2) or lower (6) magnetic shield, and must be compatible with the adjacent shield in terms of adhesion thereto and the thermal expansion coefficient thereof. An insulator layer (11, 20) comprising an electrical insulator is formed between the sensor element (4) and the metal filler (10, 12) to insure electrical insulation. The metal filler (10, 12) acts as a thermal path from the sensor element (4) to the metal shields (2, 6).
摘要翻译：一种在垂直磁阻记录头或导磁体磁阻记录头的传感器元件中产生的热量的方法和装置，其具有形成在下磁屏蔽和/或上磁屏蔽中的凹部，以在从磁介质读取数据期间提高效率。热量通过形成在上部（2）或下部（6）金属屏蔽和包括磁阻头部结构的传感器元件（4）之间的屏蔽凹槽（140）中的非磁性金属填充层（10,12）消散。金属填料（10,12）必须是非磁性的，必须避免传感器元件与上（2）或下（6）磁屏蔽之间的电短路，并且必须与相邻的屏蔽件在粘附方面相容及其热膨胀系数。在传感器元件（4）和金属填料（10,12）之间形成包括电绝缘体的绝缘体层（11,20），以确保电绝缘。金属填料（10,12）用作从传感器元件（4）到金属屏蔽件（2,6）的热路径。

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