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1.发明授权Method for fabricating magnetoresistive read head having a bias structure with at least one dusting layer 失效一种用于制造具有至少一个除尘层的偏置结构的磁阻读头的方法公开(公告)号：US07691434B1
公开(公告)日：2010-04-06
申请号：US11971398
申请日：2008-01-09
申请人： Wei Zhang , Yingjian Chen , Satoru Araki , Mohamad T. Krounbi
发明人： Wei Zhang , Yingjian Chen , Satoru Araki , Mohamad T. Krounbi
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B5/3163 , G11B5/3932 , G11B2005/3996
摘要： A method of fabricating a bias structure of a magnetoresistive read head for a magnetoresistive sensor stack formed on a substrate includes forming an underlayer and forming a bias layer over the underlayer. The method further includes forming a dusting layer directly below at least one of the underlayer or the bias layer and between the bias layer and the magnetoresistive sensor stack. The dusting layer includes discontinuous, nano-sized islands.
摘要翻译： 制造用于形成在衬底上的磁阻传感器堆叠的磁阻读取头的偏置结构的方法包括形成底层并在衬底上形成偏置层。 该方法还包括在底层或偏置层之间以及偏置层和磁阻传感器堆叠之间的至少一个下直接形成除尘层。 除尘层包括不连续的纳米尺寸岛。
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公开(公告)号：US07092195B1
公开(公告)日：2006-08-15
申请号：US10856403
申请日：2004-05-28
IPC分类号： G11B21/02
CPC分类号： G11B5/60 , G11B5/6064
摘要： A method adjusts a flying-height distance between a magnetic write head and a magnetic medium. The method includes positioning the write head in a location spaced from the magnetic medium by the flying-height distance. The write head includes a magnetic yoke and a proximal region in proximity to the magnetic medium. The write head further includes a resistive heater and at least a portion of the resistive heater is within the magnetic yoke and is in proximity to the proximal region. The resistive heater is configured to heat the proximal region. The proximal region has a coefficient of thermal expansion. The proximal region is configured to expand and to contract in response to a temperature of the proximal region. The method further includes flowing an electric current through the resistive heater. The method further includes controlling the electric current to adjust the temperature of the proximal region to selectively expand and contract the proximal region and thereby control the flying-height distance. Controlling the electric current includes pulsing the electrical current and adjusting a time interval between pulses.
摘要翻译： 一种方法调节磁写头和磁介质之间的飞行高度距离。 该方法包括将写入头定位在与磁介质隔开飞行高度距离的位置。 写磁头包括磁轭和靠近磁介质的近侧区域。 写头还包括电阻加热器，并且电阻加热器的至少一部分在磁轭内并且靠近近端区域。 电阻加热器被配置为加热近端区域。 近端区域具有热膨胀系数。 近端区域被配置为响应于近端区域的温度膨胀和收缩。 该方法还包括使电流流过电阻加热器。 该方法还包括控制电流以调节近端区域的温度以选择性地扩展和收缩近端区域，从而控制飞行高度距离。 控制电流包括脉冲电流和调节脉冲之间的时间间隔。
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3.发明授权Thin film write head having a laminated, flat top pole with bottom shaper and method of fabrication 失效薄膜写头，具有具有底部整形器的层叠平顶顶和制造方法公开(公告)号：US06975486B2
公开(公告)日：2005-12-13
申请号：US10213339
申请日：2002-08-06
CPC分类号： G11B5/313 , G11B5/3116 , G11B5/3153 , G11B5/3163 , G11B5/332
摘要： A writer for high frequency, data storage heads. The writer includes a first magnetic pole upon which a write gap pedestal is formed with an upper pedestal layer of high moment material with a planar upper surface. An electrical coil is formed on the first magnetic pole. A write gap layer is deposited on the upper surface of the upper pedestal layer. The writer includes a second magnetic pole disposed above the first magnetic pole with a magnetic, flat, top pole layer. The second magnetic pole includes a bottom shaper fabricated from high moment material positioned between the coil and the top pole layer. An insulation insert separates the bottom shaper from the upper pedestal layer. The second magnetic pole includes a thin dielectric lamination layer that separates the top pole layer from the bottom shaper to disrupt the path of eddy current in the second magnetic pole.
摘要翻译： 高频数据存储头的写入器。 写入器包括第一磁极，写入间隙基座形成有具有平坦上表面的高力矩材料的上基座层。 在第一磁极上形成电线圈。 写间隙层沉积在上基座层的上表面上。 写入器包括设置在具有磁性，平坦的顶极层的第一磁极上方的第二磁极。 第二磁极包括由位于线圈和顶极层之间的高力矩材料制成的底部整形器。 绝缘插件将底部整形器与上基座层分开。 第二磁极包括将顶极层与底部整形器分离以破坏第二磁极中涡流的路径的薄介电层压层。
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4.发明授权Magnetically soft, high saturation magnetization laminates of iron-cobalt-nitrogen and iron-nickel 有权铁 - 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。
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公开(公告)号：US5581427A
公开(公告)日：1996-12-03
申请号：US238110
申请日：1994-05-04
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。
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6.发明授权
公开(公告)号：US5532109A
公开(公告)日：1996-07-02
申请号：US542479
申请日：1995-10-13
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。
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公开(公告)号：US5458908A
公开(公告)日：1995-10-17
申请号：US310906
申请日：1994-09-21
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。
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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
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.
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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.
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10.发明授权公开(公告)号：US08104166B1
公开(公告)日：2012-01-31
申请号：US10741857
申请日：2003-12-19
申请人： Jinqiu Zhang , Ming Zhao , Mohamad T. Krounbi , Henry Yuan , Lien-Chang Wang
发明人： Jinqiu Zhang , Ming Zhao , Mohamad T. Krounbi , Henry Yuan , Lien-Chang Wang
CPC分类号： G11B5/3163 , B82Y25/00 , G01R33/093 , G11B5/398 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： A method is provided for fabricating a read element with leads that overlay a top surface of a sensor of the read element. The method includes forming a mask over a sensor layer, then using the mask to define the sensor from the sensor layer. The mask is then narrowed and a lead layer is formed that overlays both ends of the top surface of the sensor without covering a center portion of the top surface.
摘要翻译： 提供了一种制造读取元件的方法，该元件具有覆盖读取元件的传感器的顶表面的引线。 该方法包括在传感器层上形成掩模，然后使用掩模从传感器层定义传感器。 然后使掩模变窄，并且形成覆盖传感器顶表面两端的引线层，而不覆盖顶表面的中心部分。
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