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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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12.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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13.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：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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17.发明授权公开(公告)号：US07882618B2
公开(公告)日：2011-02-08
申请号：US11957468
申请日：2007-12-16
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。
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18.发明申请公开(公告)号：US20090151151A1
公开(公告)日：2009-06-18
申请号：US11957468
申请日：2007-12-16
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。
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公开(公告)号：US5588199A
公开(公告)日：1996-12-31
申请号：US339523
申请日：1994-11-14
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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公开(公告)号：US5438747A
公开(公告)日：1995-08-08
申请号：US208398
申请日：1994-03-09
CPC分类号： G11B5/3967 , G11B5/3116 , G11B5/3163 , Y10T29/49048
摘要： A merged MR head is provided which has vertically aligned sidewalls so as to minimize side-fringing and improve off-track performance. The bottom pole piece P1, which comprises the second shield layer S2 of the read head, has a pedestal pole tip with a short length dimension. A pedestal pole tip with a length as short as two times the length of the gap layer G optimally minimizes the sidewriting and improves off-track performance. The bottom pole tip structure of the write head is constructed by ion beam milling using the top pole tip structure as a mask. The ion beam milling is directed at an angle to the sidewalls of the top pole tip structure which causes the bottom pole tip structure to be milled with sidewalls which align with the top pole tip structure. The ion beam milling can comprise two angled beams, either sequentially or simultaneously, the first beam performing primarily a cutting operation and some clean up work while the second beam primarily conducts clean up work of the redeposition of the debris caused by the cutting. In another embodiment, a single angled ion beam can be employed, provided its angle is within a particular range.
摘要翻译： 提供了具有垂直对齐的侧壁的合并的MR头，以便使边缘最小化并且提高离轨性能。 包括读取头的第二屏蔽层S2的底极片P1具有短长度尺寸的基座极头。 长度短到间隙层G的长度的两倍的基座极尖最优化了笔迹的最小化并改善了离轨性能。 写头的底极尖端结构是通过使用顶极尖端结构作为掩模的离子束铣削构成的。 离子束铣削与顶极尖端结构的侧壁成一角度地引导，这导致底极尖端结构被与顶极尖端结构对准的侧壁铣削。 离子束铣削可以包括两个成角度的梁，顺序地或同时地，第一梁主要执行切割操作和一些清理工作，而第二梁主要进行由切割引起的碎片的再沉积的清理工作。 在另一个实施例中，只要其角度在特定范围内即可使用单角度离子束。
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