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61. 发明授权

US5864450A NI45FE55 metal-in-gap thin film magnetic head 失效
标题翻译： NI45FE55金属间隙薄膜磁头
公开(公告)号：US5864450A
公开(公告)日：1999-01-26
申请号：US99537
申请日：1998-06-18
申请人： Mao-Min Chen , Neil Leslie Robertson
发明人： Mao-Min Chen , Neil Leslie Robertson
IPC分类号： G11B5/127 , G11B5/147 , G11B5/31 , G11B5/39
CPC分类号： G11B5/3967 , G11B5/127 , G11B5/147 , G11B5/3109 , G11B5/3113 , G11B5/39
摘要： The present invention provides a novel high magnetic moment material for the pole pieces as well as a metal-in-gap configuration for the pole tips of either an inductive magnetic head only or the inductive portion of a MR head. The novel material is Ni.sub.45 Fe.sub.55. In the MIG configuration each pole piece of the inductive head or the inductive head portion of a MR head has a combination of layers, each combination of layers including a first layer of high magnetic moment material Ni.sub.45 Fe.sub.55 adjacent to a transducing gap and a second layer of low magnetic moment material such as Permalloy (Ni.sub.81 Fe.sub.19) further away from the gap. Since both layers are made of NiFe all the desirable properties of this type of material can be employed as well as simplifying its construction with similar plating baths. The saturation of the first layers is 50 to 60 percent higher than the saturation of the second layers. The present invention avoids effects of magnetostriction in spite of the high magnetic moment of the first layers. By appropriately selecting the thickness ratio of the second layer with respect to the first layer the magnetostriction of the laminated structure can be reduced substantially to zero. When this thickness ratio is in the order of five to nine the magnetostriction is reduced to, or slightly below, zero. If the inductive head is employed for write functions only then the second pole tip or both pole tips can be constructed of the high moment Ni.sub.45 Fe.sub.55 material without any thickness ratio or MIG configuration constraints.
摘要翻译：本发明提供了一种用于极片的新型高磁矩材料以及仅用于感应磁头或MR磁头的感应部分的极尖的金属间隙配置。新材料是Ni45Fe55。在MIG配置中，感应头或MR头的感应头部分的每个极片具有层的组合，每层组合包括与换能间隙相邻的第一层高磁矩材料Ni45Fe55和第二层低磁矩材料如坡莫合金（Ni81Fe19）远离间隙。由于两层由NiFe制成，所以可以使用这种类型的材料的所有理想特性，并且可以使用类似的电镀浴来简化其构造。第一层的饱和度比第二层的饱和度高50至60％。本发明避免了磁致伸缩的影响，尽管第一层的磁矩高。通过适当地选择第二层相对于第一层的厚度比，层压结构的磁致伸缩可以基本上减小到零。当该厚度比为5至9的数量级时，磁致伸缩降低到或略低于零。如果感应头仅用于写入功能，那么第二极尖或两个极尖可以由没有任何厚度比或MIG配置约束的高力矩Ni45Fe55材料构成。

62. 发明授权

US5606478A Ni.sub.45 Fe.sub.55 metal-in-gap thin film magnetic head 失效
标题翻译： Ni45Fe55金属间隙薄膜磁头
公开(公告)号：US5606478A
公开(公告)日：1997-02-25
申请号：US351996
申请日：1994-12-08
申请人： Mao-Min Chen , Neil L. Robertson
发明人： Mao-Min Chen , Neil L. Robertson
IPC分类号： G11B5/127 , G11B5/147 , G11B5/187 , G11B5/31 , G11B5/39 , G11B5/193
CPC分类号： G11B5/3967 , G11B5/127 , G11B5/147 , G11B5/3109 , G11B5/3113 , G11B5/3146 , G11B5/3153 , G11B5/1878
摘要： The present invention provides a novel high magnetic moment material for the pole pieces as well as a metal-in-gap configuration for the pole tips of either an inductive magnetic head only or the inductive portion of a MR head. The novel material is Ni.sub.45 Fe.sub.55. In the MIG configuration each pole piece of the inductive head or the inductive head portion of a MR head has a combination of layers, each combination of layers including a first layer of high magnetic moment material Ni.sub.45 Fe.sub.55 adjacent to a transducing gap and a second layer of low magnetic moment material such as Permalloy (Ni.sub.81 Fe.sub.19) further away from the gap. Since both layers are made of NiFe all the desirable properties of this type of material can be employed as well as simplifying its construction with similar plating baths. The saturation of the first layers is 50 to 60 percent higher than the saturation of the second layers. The present invention avoids effects of magnetostriction in spite of the high magnetic moment of the first layers. By appropriately selecting the thickness ratio of the second layer with respect to the first layer the magnetostriction of the laminated structure can be reduced substantially to zero. When this thickness ratio is in the order of five to nine the magnetostriction is reduced to, or slightly below, zero. If the inductive head is employed for write functions only then the second pole tip or both pole tips can be constructed of the high moment Ni.sub.45 Fe.sub.55 material without any thickness ratio or MIG configuration constraints.
摘要翻译：本发明提供了一种用于极片的新型高磁矩材料以及仅用于感应磁头或MR磁头的感应部分的极尖的金属间隙配置。新材料是Ni45Fe55。在MIG配置中，感应头或MR头的感应头部分的每个极片都具有层的组合，每层组合包括与换能间隙相邻的第一层高磁矩材料Ni45Fe55和第二层低磁矩材料如坡莫合金（Ni81Fe19）远离间隙。由于两层由NiFe制成，所以可以使用这种类型的材料的所有理想特性，并且可以使用类似的电镀浴来简化其构造。第一层的饱和度比第二层的饱和度高50至60％。本发明避免了磁致伸缩的影响，尽管第一层的磁矩高。通过适当地选择第二层相对于第一层的厚度比，层压结构的磁致伸缩可以基本上减小到零。当该厚度比为5至9的数量级时，磁致伸缩降低到或略低于零。如果感应头仅用于写入功能，那么第二极尖或两个极尖可以由没有任何厚度比或MIG配置约束的高力矩Ni45Fe55材料构成。

63. 发明授权

US5262914A Magnetoresistive head with enhanced exchange bias field 失效
标题翻译：具有增强的交流偏置场的磁阻头
公开(公告)号：US5262914A
公开(公告)日：1993-11-16
申请号：US779221
申请日：1991-10-18
申请人： Mao-Min Chen , Ching H. Tsang
发明人： Mao-Min Chen , Ching H. Tsang
IPC分类号： G11B5/39 , B05D5/12 , H01L43/08
CPC分类号： G11B5/399
摘要： A magnetoresistive (MR) read transducer in which a layered structure comprising an MR layer, an antiferromagnetic material in direct contact with the MR layer and a thin layer of interdiffusion material in contact with the layer of antiferromagnetic material is subjected to a heating process to a temperature within a chosen temperature for a chosen time to form a magnetic interface between the antiferromagnetic material the MR layer. The magnetic interface produces a high level of exchange bias with the MR layer.
摘要翻译：一种磁阻（MR）读取传感器，其中包括MR层，与MR层直接接触的反铁磁材料和与反铁磁材料层接触的相互扩散材料的薄层的分层结构经受加热处理温度在所选择的温度内选定的时间，以形成反铁磁材料MR层之间的磁界面。磁性界面与MR层产生高水平的交换偏压。

64. 发明授权

US07751146B2 Abs through aggressive stitching 失效
标题翻译：通过积极的缝合
公开(公告)号：US07751146B2
公开(公告)日：2010-07-06
申请号：US11881350
申请日：2007-07-26
申请人： Cherng-Chyi Han , Mao-Min Chen , Laurie Lauchlan , Lei Zhang
发明人： Cherng-Chyi Han , Mao-Min Chen , Laurie Lauchlan , Lei Zhang
IPC分类号： G11B5/187 , G11B5/127
CPC分类号： G11B5/33 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/4906 , Y10T29/49062 , Y10T29/49064
摘要： Aggressive (i.e. tight tolerance) stitching offers several advantages for magnetic write heads but at the cost of some losses during pole trimming. This problem has been overcome by replacing the alumina filler layer, that is used to protect the stitched pole during trimming, with a layer of electro-plated material. Because of the superior step coverage associated with the plating method of deposition, pole trimming can then proceed without the introduction of stresses to the stitched pole while it is being trimmed.
摘要翻译：积极（即紧公差）缝合为磁性写入头提供了几个优点，但是在极修整期间以一些损失为代价。通过用一层电镀材料代替在修整期间用于保护缝合极的氧化铝填料层已经克服了这个问题。由于与沉积电镀方法相关的优越的台阶覆盖，因此可以进行极细修剪，而不会在缝合极被修剪时引入应力。

65. 发明授权

US07631418B2 Process to form an ABS through aggressive stitching 失效
标题翻译：通过积极缝合形成ABS的过程
公开(公告)号：US07631418B2
公开(公告)日：2009-12-15
申请号：US11881316
申请日：2007-07-26
申请人： Cherng-Chyi Han , Mao-Min Chen , Laurie Lauchlan , Lei Zhang
发明人： Cherng-Chyi Han , Mao-Min Chen , Laurie Lauchlan , Lei Zhang
IPC分类号： G11B5/187
CPC分类号： G11B5/33 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/4906 , Y10T29/49062 , Y10T29/49064
摘要： A manufacturing process is provided where aggressive (i.e. tight tolerance) stitching offers several advantages for magnetic write heads but at the cost of some losses during pole trimming. This problem has been overcome by replacing the alumina filler layer, that is used to protect the stitched pole during trimming, with a layer of electroplated material. Because of the superior step coverage associated with the plating method of deposition, pole trimming can then proceed without the introduction of stresses to the stitched pole while it is being trimmed.
摘要翻译：提供了一种制造工艺，其中积极（即紧密公差）缝合为磁性写头提供了几个优点，但是在极修整期间以一些损失为代价。通过用一层电镀材料替换用于在修整期间保护缝合极的氧化铝填料层已经克服了这个问题。由于与沉积电镀方法相关的优越的台阶覆盖，因此可以进行极细修剪，而不会在缝合极被修剪时引入应力。

66. 发明申请

US20070268628A1 Abs through aggressive stitching 失效
标题翻译：通过积极的缝合
公开(公告)号：US20070268628A1
公开(公告)日：2007-11-22
申请号：US11881350
申请日：2007-07-26
申请人： Cherng-Chyi Han , Mao-Min Chen , Laurie Lauchlan , Lei Zhang
发明人： Cherng-Chyi Han , Mao-Min Chen , Laurie Lauchlan , Lei Zhang
IPC分类号： G11B5/147
CPC分类号： G11B5/33 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/4906 , Y10T29/49062 , Y10T29/49064
摘要： Aggressive (i.e. tight tolerance) stitching offers several advantages for magnetic write heads but at the cost of some losses during pole trimming. This problem has been overcome by replacing the alumina filler layer, that is used to protect the stitched pole during trimming, with a layer of electro-plated material. Because of the superior step coverage associated with the plating method of deposition, pole trimming can then proceed without the introduction of stresses to the stitched pole while it is being trimmed.
摘要翻译：积极（即紧公差）缝合为磁性写入头提供了几个优点，但是在极修整期间以一些损失为代价。通过用一层电镀材料代替在修整期间用于保护缝合极的氧化铝填料层已经克服了这个问题。由于与沉积电镀方法相关的优越的台阶覆盖，因此可以进行极细修剪，而不会在缝合极被修剪时引入应力。

67. 发明申请

US20070008656A1 Thermoelectric cooling of CCP-CPP devices 失效
标题翻译： CCP-CPP设备的热电冷却
公开(公告)号：US20070008656A1
公开(公告)日：2007-01-11
申请号：US11175932
申请日：2005-07-06
申请人： Yue Liu , Daniel Abels , Moris Dovek , Min Li , Pokang Wang , Mao-Min Chen
发明人： Yue Liu , Daniel Abels , Moris Dovek , Min Li , Pokang Wang , Mao-Min Chen
IPC分类号： G11B5/33
CPC分类号： G11B5/3929 , B82Y10/00 , G11B5/3133 , G11B2005/3996
摘要： The problem of increasing the output signal from a CCP-CPP GMR device without having it overheat has been overcome by placing materials that have different thermoelectric potentials on opposing sides of the spacer layer. Heat from the hot junction is removed at the substrate, which acts as a heat sink, resulting in a net local cooling of the confined current spacer layer, enabling it to operate at both higher input voltage increased reliability.
摘要翻译：通过在间隔层的相对侧放置具有不同热电势的材料来克服增加来自CCP-CPP GMR器件而不使其过热的输出信号的问题。来自热接点的热量在基板处被去除，其作为散热器，导致限流电流间隔层的局部局部冷却，使其能够在较高的输入电压增加的可靠性下工作。

68. 发明申请

US20060208296A1 Novel structure and method to fabricate high performance MTJ devices for MRAM applications 失效
标题翻译：用于制造用于MRAM应用的高性能MTJ器件的新型结构和方法
公开(公告)号：US20060208296A1
公开(公告)日：2006-09-21
申请号：US11080860
申请日：2005-03-15
申请人： Cheng Horng , Ru-Ying Tong , Mao-Min Chen , Liubo Hong , Min Li
发明人： Cheng Horng , Ru-Ying Tong , Mao-Min Chen , Liubo Hong , Min Li
IPC分类号： H01L29/94
CPC分类号： H01L43/08 , B82Y25/00 , G01R33/093 , G01R33/098 , G11B5/3163 , G11B5/3906 , H01L43/12
摘要： A high performance MTJ in an MRAM array is disclosed in which the bottom conductor has an amorphous Ta capping layer. A key feature is a surfactant layer comprised of oxygen that is formed on the Ta surface. The resulting smooth and flat Ta capping layer promotes a smooth and flat surface in the MTJ layers which are subsequently formed on the surfactant layer. For a 0.3×0.6 micron MTJ bit size, a 35 to 40 Angstrom thick NiFe(18%) free layer, an AlOx barrier layer generated from a ROX oxidation of an 9 to 10 Angstrom thick Al layer, and a Ru/Ta/Ru capping layer are employed to give a dR/R of >40% and an RA of about 4000 ohm-μm2. The MTJ configuraton is extendable to a 0.2×0.4 micron MTJ bit size.
摘要翻译：公开了一种MRAM阵列中的高性能MTJ，其中底部导体具有无定形Ta覆盖层。关键特征是由在Ta表面上形成的氧构成的表面活性剂层。得到的平滑且平坦的Ta覆盖层促进MTJ层中平滑且平坦的表面，随后在表面活性剂层上形成。对于0.3×0.6微米的MTJ位尺寸，35至40埃厚的NiFe（18％）自由层，由9至10埃厚的Al层的ROX氧化产生的AlO x势垒层，以及Ru / Ta / 使用Ru覆盖层来产生大于40％的dR / R和约4000欧姆 - 姆2的RA。 MTJ配置可扩展到0.2x0.4微米的MTJ位大小。

69. 发明申请

US20050168871A1 Self-aligned trimmed pole 失效
标题翻译：自对准修边杆
公开(公告)号：US20050168871A1
公开(公告)日：2005-08-04
申请号：US11091160
申请日：2005-03-28
申请人： Cherng-Chyi Han , Mao-Min Chen , Fenglin Liu
发明人： Cherng-Chyi Han , Mao-Min Chen , Fenglin Liu
IPC分类号： G11B5/31 , G11B5/147
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/23 , G11B5/3163
摘要： A method for forming a trimmed upper pole piece for a magnetic write head, said pole piece having a uniform width above and below a write gap layer. Prior art methods of trimming pole pieces to a final width using ion-beam etches produce pole pieces with thickness differentials due to the etch resistant nature of the alumina write-gap filling material. The present method uses NiCr, NiFeCr or Ru as write gap filling materials which have an etch rate which is substantially equal to the etch rate of the other layers forming the pole piece and are highly corrosion resistant.
摘要翻译：一种用于形成用于磁性写入头的修整的上极片的方法，所述极片在写间隙层上方和下方具有均匀的宽度。使用离子束蚀刻将极片修剪到最终宽度的现有技术方法由于氧化铝写入间隙填充材料的耐蚀刻性质而产生具有厚度差异的极片。本方法使用NiCr，NiFeCr或Ru作为写入间隙填充材料，其蚀刻速率基本上等于形成极片的其它层的蚀刻速率，并且具有高度耐腐蚀性。

70. 发明授权

US06608737B2 Method to make a stitched writer for a giant magneto-resistive head 失效
标题翻译：为巨型磁阻头制作缝合笔记的方法
公开(公告)号：US06608737B2
公开(公告)日：2003-08-19
申请号：US10266664
申请日：2002-10-08
申请人： Cherng-Chyi Han , Mao-Min Chen , Po-Kang Wang , Moris Musa Dovek , Gene Michael Sandler , Jen-Wei C. Koo
发明人： Cherng-Chyi Han , Mao-Min Chen , Po-Kang Wang , Moris Musa Dovek , Gene Michael Sandler , Jen-Wei C. Koo
IPC分类号： G11B5127
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3163 , G11B5/3903 , G11B5/3967 , G11B2005/3996 , Y10T29/49046
摘要： A giant magneto-resistive head is provided which includes a novel high data-rate stitched pole inductive magnetic write head. The write head incorporates a non-magnetic spacer layer and a magnetic pole yoke that is recessed from the magnetic pole tip. The spacer layer shortens the throat height of the write head, reduces its saturation write current, and improves its overwrite and side erasure performance.
摘要翻译：提供了一种巨型磁阻头，它包括一种新颖的高数据速率缝合磁极感应磁写头。写磁头包括从磁极尖端凹入的非磁性间隔层和磁极轭。间隔层缩短写头的喉部高度，降低其饱和写入电流，并提高其覆盖和侧面擦除性能。

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