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11. 发明授权

US06778358B1 Magnetically soft, high saturation magnetization laminates of iron-cobalt-nitrogen and iron-nickel 有权
标题翻译：铁 - 钴 - 氮和铁 - 镍的磁软，高饱和磁化层压板
公开(公告)号：US06778358B1
公开(公告)日：2004-08-17
申请号：US10137030
申请日：2002-05-01
申请人： Hai Jiang , Yingjian Chen , Xiaozhong Dang , Mohamad T. Krounbi
发明人： Hai Jiang , Yingjian Chen , Xiaozhong Dang , Mohamad T. Krounbi
IPC分类号： G11B539
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B5/1278 , G11B5/313 , G11B5/3967 , G11B2005/3996 , Y10T428/12465
摘要： In one aspect, a laminated structure including a first plurality of layers containing primarily-iron FeCoN interleaved with a second plurality of layers containing primarily iron FeNi is disclosed. The structure has an easy axis of magnetization and a hard axis of magnetization, has a magnetic saturation of at least about twenty-three-thousand Gauss, and has a magnetic coercivity measured substantially along its hard axis of magnetization that is less than two Oersted. Additional elements can be added in minority concentrations to form primarily-iron FeCoN layers with increased resistivity. The laminated structure has applicability in various fields in which high saturation magnetization, magnetically soft materials are advantageous, particularly for inductive heads.
摘要翻译：一方面，公开了一种叠层结构，其包括主要包含铁FeCoN的第一多个层，所述第一多个层与主要包含铁FeNi的第二多个层交错。该结构具有容易的磁化轴和硬磁化轴，具有至少约二十三万高斯的磁饱和度，并且具有基本上沿其低于两个奥斯特的硬磁化轴测量的磁矫顽力。可以以少数浓度添加额外的元素以形成具有增加的电阻率的主要的FeCoN层。层压结构在各种领域中具有适用性，其中高饱和磁化强度，磁软材料是有利的，特别是对于感应头。

12. 发明授权

US5581427A Peak enhanced magnetoresistive read transducer 失效
标题翻译：峰值增强型磁阻读取传感器
公开(公告)号：US5581427A
公开(公告)日：1996-12-03
申请号：US238110
申请日：1994-05-04
申请人： Joseph Shao-Ying Feng , Mohamad T. Krounbi , Douglas J. Werner
发明人： Joseph Shao-Ying Feng , Mohamad T. Krounbi , Douglas J. Werner
IPC分类号： G11B5/00 , G11B5/09 , G11B5/39 , G11B5/30
CPC分类号： G11B5/3932 , G11B5/00 , G11B5/3903 , G11B2005/0008 , G11B5/09
摘要： An MR read transducer is provided which has a central region located between a pair of end regions. The central region and the pair of end regions extend along a width of the MR read transducer. An MR layer extends along the width of the MR read transducer and has an active layer portion located between a pair of passive layer portions, the active layer portion being located in the central region and each passive layer portion being located in a respective end region. A layer is located in the central region and magnetostatically coupled to the active layer portion of the MR layer for transversely biasing the MR layer. Each passive layer portion of the MR layer is permeable so that it is responsive to externally applied magnetic fields. The passive layer portions of the MR layer are the only permeable portions of the MR read transducer in the end regions of the MR read transducer, so a response by either passive layer of the MR layer to a magnetic signal will result in a supralinearly increased net response of the active portion of the MR layer to the same applied magnetic field signal. This arrangement increases the amplitude and the sharpness of the peak of a signal response of the MR read transducer to the field from a recorded transition.
摘要翻译：提供了一种MR读取换能器，其具有位于一对端部区域之间的中心区域。中心区域和一对末端区域沿着MR读取换能器的宽度延伸。 MR层沿着MR读取换能器的宽度延伸，并且具有位于一对无源层部分之间的有源层部分，有源层部分位于中心区域中，每个无源层部分位于相应的端部区域中。层位于中心区域并且静磁耦合到MR层的有源层部分以横向偏置MR层。 MR层的每个无源层部分是可渗透的，使得其响应于外部施加的磁场。 MR层的无源层部分是MR读取换能器的端部区域中的MR读取换能器的唯一可渗透部分，因此MR层的无源层对磁信号的响应将导致网络上部网络 MR层的有源部分对相同的施加的磁场信号的响应。这种布置将MR读取传感器的信号响应的峰值的幅度和锐度从记录的转变增加到场。

13. 发明授权

US5532109A Azo dyes as adhesion promotion additive in polydimethylglutarimide 失效
标题翻译：偶氮染料作为粘合促进剂在聚二甲基戊二酰亚胺中
公开(公告)号：US5532109A
公开(公告)日：1996-07-02
申请号：US542479
申请日：1995-10-13
申请人： Mohamad T. Krounbi , Alfred F. Renaldo , Douglas J. Werner
发明人： Mohamad T. Krounbi , Alfred F. Renaldo , Douglas J. Werner
IPC分类号： G03F7/085 , H05K3/14 , G03F7/26
CPC分类号： G03F7/085 , H05K3/143
摘要： In a bi-layer lift-off process, the adhesion characteristics of a PMGI release layer are substantially improved by the use of ortho-hydroxy substituted 4-phenylazo compounds (azo dyes), a class of nonactinic dyes, as an adhesion promoter additive. These azo dyes, due to their chemical structure, exhibit selective binding to various metals by acting as a chelating ligand to the metal surface. Formulations of a specific azo dye, Sudan Orange G, at concentrations from 0.25 to 1.0 percent (by weight) in PMGI exhibits no loss of adhesion at prebake temperatures in the range of 120 to 160 degrees C.
摘要翻译：在双层剥离过程中，通过使用邻羟基取代的4-苯基偶氮化合物（偶氮染料）作为一种非活性染料作为粘合促进剂添加剂，使PMGI释放层的粘合特性得到显着改善。由于它们的化学结构，这些偶氮染料通过充当金属表面的螯合配体而显示出对各种金属的选择性结合。在PMGI中浓度为0.25-1.0％（重量）的特定偶氮染料，苏丹橙G的配方在预烘烤温度在120至160℃的范围内表现出没有损失。

14. 发明授权

US5458908A Method of fabricating a magnetoresistive read transducer 失效
标题翻译：制造磁阻读取传感器的方法
公开(公告)号：US5458908A
公开(公告)日：1995-10-17
申请号：US310906
申请日：1994-09-21
申请人： Mohamad T. Krounbi , Kenneth T. Kung , Ching H. Tsang
发明人： Mohamad T. Krounbi , Kenneth T. Kung , Ching H. Tsang
IPC分类号： G11B5/39 , G11B5/40 , H01L43/08 , B05D5/12
CPC分类号： G11B5/399 , G11B5/3906 , G11B5/40
摘要： A magnetoresistive (MR) read transducer assembly having passive end regions separated by a central active region, and a method of fabricating it. Layers of a first biasing material and a nonmagnetic decoupling spacer material are deposited on a substrate, then covered by a mask only in the central region. By etching or ion milling, those parts of the layers not covered by the mask are removed to define a transverse biasing means in the central region and define the passive end regions. With the same mask remaining in place, a conductive material and exchange layer comprising a second biasing material are deposited over all regions. The mask is removed to define and provide conductor leads and longitudinal biasing means only in the end regions. MR material is thereafter deposited as a continuous thin film in direct contact with the central region containing the transverse biasing means and in direct contact with the end regions containing the longitudinal biasing means. This fabrication technique has no critical etching steps requiring stopping at or near a particular interface and the MR film provides a continuous platform for carrying current without butted junctions in the current path.
摘要翻译：具有由中心有源区域分离的被动端区域的磁阻（MR）读取换能器组件及其制造方法。第一偏置材料和非磁性去耦隔离材料的层沉积在基底上，然后仅在中心区域被掩模覆盖。通过蚀刻或离子研磨，去除未被掩模覆盖的层的那些部分以在中心区域中限定横向偏置装置并且限定被动端部区域。在相同的掩模保持就位的情况下，在所有区域上沉积包括第二偏置材料的导电材料和交换层。去除掩模以限定并仅在端部区域中提供导体引线和纵向偏置装置。然后，MR材料作为连续的薄膜沉积，其与包含横向偏置装置的中心区域直接接触并与包含纵向偏置装置的端部区域直接接触。该制造技术没有要求在特定界面处或附近停止的关键蚀刻步骤，并且MR膜提供用于在当前路径中承载没有对接结的电流的连续平台。

15. 发明授权

US5079663A Magnetoresistive sensor with track following capability 失效
标题翻译：具有跟踪能力的磁传感器
公开(公告)号：US5079663A
公开(公告)日：1992-01-07
申请号：US471576
申请日：1990-01-29
申请人： Kochan Ju , Mohamad T. Krounbi , Po-Kang Wang
发明人： Kochan Ju , Mohamad T. Krounbi , Po-Kang Wang
IPC分类号： G11B5/33 , G11B5/39 , G11B5/58 , H01L43/08
CPC分类号： G11B5/58 , G11B5/39
摘要： A magnetoresistive (MR) sensor is center tapped to provide the difference signals for servo operation on data and sum signals for the data information. The center-tap of the MR sensor is made of a high resistivity material compared to the resistivity of the MR element itself such as tantalum, Nichrome and carbon. Processes which can be used to produce the high resistivity center-tap conductor include an insulator layer to define both the track width and the center-tap conductor and a sequence which first patterns the MR sensor and then masks to define the conductor regions.

16. 发明授权

US5005096A Magnetoresistive read transducer having hard magnetic shunt bias 失效
标题翻译：具有硬磁分路偏置的磁阻读取传感器
公开(公告)号：US5005096A
公开(公告)日：1991-04-02
申请号：US287970
申请日：1988-12-21
申请人： Mohamad T. Krounbi , Po-Kang Wang , Otto Voegeli
发明人： Mohamad T. Krounbi , Po-Kang Wang , Otto Voegeli
IPC分类号： G11B5/39
CPC分类号： G11B5/3903 , G11B5/3932
摘要： A magnetoresistive (MR) read transducer comprising an MR layer having passive end regions separated by a central active region. A longitudinal bias is produced by a thin film of hard magnetic material in the end regions only, and the thin film of hard magnetic material is spaced from the MR layer by a nonmagnetic spacer layer so that a magnetostatic longitudinal bias is produced of a level to maintain the passive end regions of the MR layer in a stable state.

17. 发明授权

US07882618B2 Fabricating magnetic read heads with a reduced scratch exposure region 有权
标题翻译：制造具有减少的划痕曝光区域的磁读头
公开(公告)号：US07882618B2
公开(公告)日：2011-02-08
申请号：US11957468
申请日：2007-12-16
申请人： David P. Druist , Mohamad T. Krounbi , David J. Seagle
发明人： David P. Druist , Mohamad T. Krounbi , David J. Seagle
IPC分类号： G11B5/127 , H04R31/00
CPC分类号： G11B5/3163 , G11B5/3106 , G11B5/3932 , G11B5/40 , Y10T29/49021 , Y10T29/49032 , Y10T29/49034 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： Methods of fabricating magnetic read heads are provided which reduce the width of the scratch exposure region of a read head. During normal fabrication processes, a read head is formed with a first shield, a read element formed on the first shield, and hard bias layers formed on either side of the read element. The width of the read elements and the hard bias layers define an initial scratch exposure region. According to embodiments herein, a mask structure is formed to protect the read element and first portions of the hard bias layers proximate to the read element. A removal process is then performed to remove second portions of the hard bias layers that are not protected by the mask structure, which defines a final scratch exposure region that is smaller than the initial scratch exposure region.
摘要翻译：提供制造磁读头的方法，其减小读头的划痕曝光区域的宽度。在通常的制造过程中，读头形成有第一屏蔽，形成在第一屏蔽上的读取元件以及形成在读取元件两侧的硬偏置层。读取元件和硬偏置层的宽度限定初始划痕曝光区域。根据本文的实施例，形成掩模结构以保护读取元件和靠近读取元件的硬偏置层的第一部分。然后执行去除处理以去除未被掩模结构保护的硬偏置层的第二部分，其限定小于初始划痕暴露区域的最终刮擦暴露区域。

18. 发明申请

US20090151151A1 FABRICATING MAGNETIC READ HEADS WITH A REDUCED SCRATCH EXPOSURE REGION 有权
标题翻译：用减少的刮刀暴露区域制造磁性读取头
公开(公告)号：US20090151151A1
公开(公告)日：2009-06-18
申请号：US11957468
申请日：2007-12-16
申请人： David P. Druist , Mohamad T. Krounbi , David J. Seagle
发明人： David P. Druist , Mohamad T. Krounbi , David J. Seagle
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： G11B5/3163 , G11B5/3106 , G11B5/3932 , G11B5/40 , Y10T29/49021 , Y10T29/49032 , Y10T29/49034 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： Methods of fabricating magnetic read heads are provided which reduce the width of the scratch exposure region of a read head. During normal fabrication processes, a read head is formed with a first shield, a read element formed on the first shield, and hard bias layers formed on either side of the read element. The width of the read elements and the hard bias layers define an initial scratch exposure region. According to embodiments herein, a mask structure is formed to protect the read element and first portions of the hard bias layers proximate to the read element. A removal process is then performed to remove second portions of the hard bias layers that are not protected by the mask structure, which defines a final scratch exposure region that is smaller than the initial scratch exposure region.
摘要翻译：提供制造磁读头的方法，其减小读头的划痕曝光区域的宽度。在通常的制造过程中，读头形成有第一屏蔽，形成在第一屏蔽上的读取元件以及形成在读取元件两侧的硬偏置层。读取元件和硬偏置层的宽度限定初始划痕曝光区域。根据本文的实施例，形成掩模结构以保护读取元件和靠近读取元件的硬偏置层的第一部分。然后执行去除处理以去除未被掩模结构保护的硬偏置层的第二部分，其限定小于初始划痕暴露区域的最终刮擦暴露区域。

19. 发明授权

US5604073A Azo dyes as adhesion promotion additive in polydimethylglutarimide 失效
标题翻译：偶氮染料作为粘合促进剂在聚二甲基戊二酰亚胺中
公开(公告)号：US5604073A
公开(公告)日：1997-02-18
申请号：US453027
申请日：1995-05-30
申请人： Mohamad T. Krounbi , Alfred F. Renaldo , Douglas J. Werner
发明人： Mohamad T. Krounbi , Alfred F. Renaldo , Douglas J. Werner
IPC分类号： G03F7/085 , H05K3/14 , G03F7/00
CPC分类号： G03F7/085 , H05K3/143
摘要： In a bi-layer lift-off process, the adhesion characteristics of a PMGI release layer are substantially improved by the use of ortho-hydroxy substituted 4-phenylazo compounds (azo dyes), a class of nonactinic dyes, as an adhesion promoter additive. These azo dyes, due to their chemical structure, exhibit selective binding to various metals by acting as a chelating ligand to the metal surface. Formulations of a specific azo dye, Sudan Orange G, at concentrations from 0.25 to 1.0 percent (by weight) in PMGI exhibits no loss of adhesion at prebake temperature in the range of 120 to 160 degrees C.
摘要翻译：在双层剥离过程中，通过使用邻羟基取代的4-苯基偶氮化合物（偶氮染料）作为一种非活性染料作为粘合促进剂添加剂，使PMGI释放层的粘合特性得到显着改善。由于它们的化学结构，这些偶氮染料通过充当金属表面的螯合配体而显示出对各种金属的选择性结合。 PMGI浓度为0.25〜1.0％的特定偶氮染料，苏丹橙G的配方，在预烘温度为120〜160℃的范围内，没有粘附损失。

20. 发明授权

US5588199A Lapping process for a single element magnetoresistive head 失效
标题翻译：单个元件磁阻头的研磨工艺
公开(公告)号：US5588199A
公开(公告)日：1996-12-31
申请号：US339523
申请日：1994-11-14
申请人： Mohamad T. Krounbi , Hin P. E. Lee , David J. Seagle
发明人： Mohamad T. Krounbi , Hin P. E. Lee , David J. Seagle
IPC分类号： G11B5/31 , G11B5/39 , G11B5/42
CPC分类号： G11B5/3903 , G11B5/3166 , Y10T29/49037 , Y10T29/49046 , Y10T29/49048
摘要： A method of lapping magnetoresistive (MR) heads individually which provides an MR element having a desired height with minimized skew is described. During fabrication of the MR head, one or more shunt resistors are formed between the edge of the MR element and the head air bearing surface. The shunt resistors are electrically connected at each end to extensions of the MR electrical leads and connected to the MR element and to each other at points between the ends forming a resistor network. During lapping of the MR head, the resistance of the resistor network is measured by an Ohmmeter connected between the MR element leads. As portions of the shunt resistors are ground away, the changes in the measured resistance of the resistor network are used to monitor and control any skew in the lapping process.
摘要翻译：描述了单独研磨磁阻（MR）头的方法，其提供具有最小偏移的期望高度的MR元件。在制造MR磁头时，在MR元件的边缘和头部空气轴承表面之间形成一个或多个分流电阻。分流电阻器的每一端电连接到MR电引线的延伸部分并连接到MR元件，并且在形成电阻器网络的端部之间的点彼此连接。在研磨MR头期间，电阻网络的电阻由连接在MR元件引线之间的欧姆表测量。由于分流电阻器的部分被接地，电阻网络的测量电阻的变化用于监测和控制研磨过程中的任何偏斜。

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