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61. 发明授权

US08710602B2 Method and system for providing magnetic junctions having improved characteristics 有权
标题翻译：提供具有改进特性的磁结的方法和系统
公开(公告)号：US08710602B2
公开(公告)日：2014-04-29
申请号：US13332305
申请日：2011-12-20
申请人： Xueti Tang , Dmytro Apalkov , Steven M. Watts , Kiseok Moon , Vladimir Nikitin
发明人： Xueti Tang , Dmytro Apalkov , Steven M. Watts , Kiseok Moon , Vladimir Nikitin
IPC分类号： H01L43/08
CPC分类号： H01L43/08 , G11C11/161 , G11C11/5607 , H01F10/3254 , H01F10/3286 , H01F10/3295
摘要： A method and system provide a magnetic junction usable in a magnetic device. The magnetic junction includes a pinned layer, a nonmagnetic spacer layer, a free layer, at least one insulating layer, and at least one magnetic insertion layer adjoining the at least one insulating layer. The nonmagnetic spacer layer is between the pinned layer and the free layer. The at least one insulating layer is adjacent to at least one of the free layer and the pinned layer. The at least one magnetic insertion layer adjoins the at least one insulating layer. In some aspects, the insulating layer(s) include at least one of magnesium oxide, aluminum oxide, tantalum oxide, ruthenium oxide, titanium oxide, and nickel oxide The magnetic junction is configured such that the free layer is switchable between a plurality of stable magnetic states when a write current is passed through the magnetic junction.
摘要翻译：一种方法和系统提供可用于磁性装置的磁结。磁结包括钉扎层，非磁性间隔层，自由层，至少一个绝缘层以及与至少一个绝缘层邻接的至少一个磁性插入层。非磁性间隔层位于被钉扎层和自由层之间。至少一个绝缘层与自由层和钉扎层中的至少一个相邻。所述至少一个磁性插入层邻接所述至少一个绝缘层。在一些方面，绝缘层包括氧化镁，氧化铝，氧化钽，氧化钌，氧化钛和氧化镍中的至少一种。磁结被构造成使得自由层可在多个稳定的写入电流通过磁性结时的磁状态。

62. 发明授权

US08456882B2 Method and system for providing dual magnetic tunneling junctions usable in spin transfer torque magnetic memories 有权
标题翻译：用于提供可用于自旋转移转矩磁存储器中的双磁隧道结的方法和系统
公开(公告)号：US08456882B2
公开(公告)日：2013-06-04
申请号：US13415261
申请日：2012-03-08
申请人： Dmytro Apalkov , Vladimir Nikitin , David Druist , Steven M. Watts
发明人： Dmytro Apalkov , Vladimir Nikitin , David Druist , Steven M. Watts
IPC分类号： G11C5/08 , G11C11/06 , G11C11/14 , G11C11/15
CPC分类号： H01L43/12 , G11C11/161 , G11C11/1659 , G11C11/1675 , G11C11/5607 , H01L43/08
摘要： A method and system for providing a magnetic junction usable in a magnetic memory are described. The magnetic junction includes first and second pinned layers, first and second nonmagnetic spacer layers, and a free layer. The first pinned layer has a first pinned layer magnetic moment and is nonmagnetic layer-free. The first nonmagnetic spacer layer resides between the first pinned and free layers. The free layer resides between the first and second nonmagnetic spacer layers. The second pinned layer has a second pinned layer magnetic moment and is nonmagnetic layer-free. The second nonmagnetic spacer layer resides between the free and second pinned layers. The first and second pinned layer magnetic moments are antiferromagnetically coupled and self-pinned. The magnetic junction is configured to allow the free layer to be switched between stable magnetic states when a write current is passed through the magnetic junction.
摘要翻译：描述了一种用于提供可用于磁存储器中的磁结的方法和系统。磁结包括第一和第二固定层，第一和第二非磁性间隔层和自由层。第一被钉扎层具有第一钉扎层磁矩并且是非磁性层。第一非磁性间隔层位于第一被钉扎层和自由层之间。自由层位于第一和第二非磁性间隔层之间。第二被钉扎层具有第二钉扎层磁矩并且是非磁性层。第二非磁性间隔层位于自由和第二被钉扎层之间。第一和第二钉扎层磁矩是反铁磁耦合和自固定的。磁结被配置为当写入电流通过磁性结时，允许自由层在稳定的磁状态之间切换。

63. 发明申请

US20130009260A1 Method And System For Providing A Magnetic Junction Using Half Metallic Ferromagnets 有权
标题翻译：使用半金属铁磁体提供磁连接的方法和系统
公开(公告)号：US20130009260A1
公开(公告)日：2013-01-10
申请号：US13517731
申请日：2012-06-14
申请人： Dmytro Apalkov , Xueti Tang , Mohamad Towfik Krounbi , Vladimir Nikitin , Alexey Vasilyevitch Khvalkovskiy
发明人： Dmytro Apalkov , Xueti Tang , Mohamad Towfik Krounbi , Vladimir Nikitin , Alexey Vasilyevitch Khvalkovskiy
IPC分类号： H01L29/82
CPC分类号： H01L43/10 , G11C11/161 , G11C11/1675 , H01L43/08
摘要： A method and system provide a magnetic junction usable in a magnetic device. The magnetic junction includes a pinned layer, a nonmagnetic spacer layer, and a free layer. The nonmagnetic spacer layer is between the pinned layer and the free layer. The magnetic junction is configured such that the free layer is switchable between a plurality of stable magnetic states when a write current is passed through the magnetic junction. At least one of the free layer and the pinned layer include at least one half-metal.
摘要翻译：一种方法和系统提供可用于磁性装置的磁结。磁结包括钉扎层，非磁性间隔层和自由层。非磁性间隔层位于被钉扎层和自由层之间。磁结被配置为使得当写入电流通过磁结时，自由层可在多个稳定磁状态之间切换。自由层和钉扎层中的至少一个包括至少一个半金属。

64. 发明授权

US08111479B2 Perpendicular magnetic recording head having a notched trailing shield 有权
标题翻译：垂直磁记录头具有带槽口的后挡板
公开(公告)号：US08111479B2
公开(公告)日：2012-02-07
申请号：US11877570
申请日：2007-10-23
申请人： Tsung Yuan Chen , Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin , Changqing Shi
发明人： Tsung Yuan Chen , Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin , Changqing Shi
IPC分类号： G11B5/127 , G11B5/23
CPC分类号： G11B5/3116 , G11B5/1278
摘要： A magnetic write head for perpendicular magnetic data recording having a trailing shield with a two step throat height. The trailing shield is formed over a non-magnetic bump that forms a notch in the leading edge of the trailing shield. This notch defines a first, smaller throat height closest to the write pole and a larger throat height away from the write pole. The smaller throat height near the write pole prevents excess magnetic flux from leaking to the write pole, thereby ensuring efficient strong write field. The larger trailing shield throat height away from the write pole prevents magnetic saturation of the trailing shield and also greatly facilitates manufacturing avoiding problems related to variations and deviations in manufacturing processes used to define the trailing shield.
摘要翻译：用于垂直磁数据记录的磁写头，具有具有两段喉部高度的后挡板。后挡板形成在非磁性凸块上，该非磁性凸块在后挡板的前缘形成凹口。该凹口限定了最靠近写入极的第一较小的喉部高度和远离写入极的较大的喉部高度。写极附近的较小的喉部高度可防止过多的磁通量泄漏到写入极，从而确保有效的强写入场。远离写入极的较大的后屏蔽喉部高度防止尾部屏蔽层的磁饱和，并且还极大地促进制造，避免与用于限定后屏蔽的制造工艺的变化和偏差相关的问题。

65. 发明授权

US08003304B2 Method for manufacturing a perpendicular magnetic write pole using an electrical lapping guide for tight write pole flare point control 有权
标题翻译：使用电研磨引导件制造垂直写磁极的方法，用于紧密写入磁极点光斑控制
公开(公告)号：US08003304B2
公开(公告)日：2011-08-23
申请号：US12023892
申请日：2008-01-31
申请人： Vladimir Nikitin , Yi Zheng
发明人： Vladimir Nikitin , Yi Zheng
IPC分类号： G11B5/127
CPC分类号： G11B5/3166 , G11B5/1278 , G11B5/3116 , G11B5/3169 , Y10T29/49036 , Y10T29/49037 , Y10T29/49046
摘要： A method for manufacturing a magnetic write head for perpendicular magnetic recording. The method provides for accurate definition of a device feature such as a write pole flare point. A functional lapping guide is formed to determine when a lapping operation should be terminated to define an air bearing surface of a slider. In order to provide accurate compensation for manufacturing variations in the functional lapping guide, a dummy lapping guide is provided. An amount of variation of a front edge of the dummy lapping guide, which is defined by the same process step as a writer pole flare point, can be calculated by measuring the width (stripe height) of the dummy lapping guide based on its electrical resistance. Since the back edges of the dummy lapping guide and functional lapping guide are defined by the same manufacturing steps, the back edge of the functional lapping guide can then be determined, and used for accurately control of the writer flare point through their correlation established from the dummy lapping guide.
摘要翻译：一种用于制造用于垂直磁记录的磁写头的方法。该方法提供了诸如写极点闪光点的设备特征的精确定义。形成功能研磨引导件以确定何时应当终止研磨操作以限定滑块的空气轴承表面。为了对功能研磨导轨的制造变化提供准确的补偿，提供了一个虚拟研磨导轨。可以通过测量基于其电阻的虚拟研磨导轨的宽度（条带高度）来计算由研磨引导件的相同工艺步骤限定的假研磨引导件的前边缘的变化量，。由于仿真研磨引导件和功能性研磨引导件的后边缘由相同的制造步骤限定，因此可以确定功能研磨导向件的后边缘，并且用于通过其从虚拟研磨指南。

66. 发明授权

US07881019B2 Two step corner recess for secondary stray field reduction in a perpendicular magnetic recording head 有权
标题翻译：用于垂直磁记录头中二次杂散场减少的两步拐角凹槽
公开(公告)号：US07881019B2
公开(公告)日：2011-02-01
申请号：US11391835
申请日：2006-03-28
申请人： Wen-Chien David Hsiao , Yimin Hsu , Ming Jiang , Vladimir Nikitin
发明人： Wen-Chien David Hsiao , Yimin Hsu , Ming Jiang , Vladimir Nikitin
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： G11B5/1278 , G11B5/3116
摘要： A magnetic structure for use in a magnetic head for avoiding stray field writing. The magnetic structure can be for example a magnetic shield or could be a magnetic pole of a write head and is particularly advantageous for use in a perpendicular recording system, because such perpendicular recording systems are especially susceptible to stray field writing. The magnetic structure includes a forward protruding portion that extends toward the air bearing surface (ABS) of the head also includes first and second wing portions that extend laterally from the forward protruding portion. The wing portions each have includes an inner constant recess portion, and an outer tapered portion. The inner constant recess portion of each wing prevents stray field writing while also preventing magnetic saturation, the outer tapered portions, which taper away from the ABS as they extend laterally outward, further prevent stray field writing by removing the outer corners of the shield away from the ABS.
摘要翻译：用于磁头的磁结构，用于避免杂散场写入。磁性结构可以是例如磁屏蔽或者可以是写入磁头的磁极，并且对于在垂直记录系统中使用是特别有利的，因为这样的垂直记录系统特别容易受到杂散磁场写入的影响。磁性结构包括朝向头部的空气支承表面（ABS）延伸的向前突出部分还包括从前突出部分横向延伸的第一和第二翼部分。翼部各自包括内部恒定凹部和外锥形部。每个翼的内部恒定凹部防止杂散场写入，同时也防止磁饱和，当锥形横向向外延伸时，远离ABS逐渐变细的外锥形部分进一步防止杂散场写入，通过将屏蔽的外角除去 ABS。

67. 发明申请

US20100157470A1 METHODS FOR CREATING SLANTED PERPENDICULAR MAGNETIC POLE VIA METAL LIFTOFF 有权
标题翻译：用于通过金属升降机创建抛光的扁平磁铁的方法
公开(公告)号：US20100157470A1
公开(公告)日：2010-06-24
申请号：US12341893
申请日：2008-12-22
申请人： Amanda Baer , Wen-Chien David Hsiao , Vladimir Nikitin , Trevor W. Olson , Yuan Yao
发明人： Amanda Baer , Wen-Chien David Hsiao , Vladimir Nikitin , Trevor W. Olson , Yuan Yao
IPC分类号： G11B5/187
CPC分类号： G11B5/3163 , G11B5/1278 , G11B5/3116 , Y10T29/49039 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： A method in one embodiment includes forming a resist structure above an upper surface of a substrate, wherein a portion of the upper surface of the substrate is a shaping layer, wherein the resist structure has an undercut; depositing a layer of magnetic material above exposed regions of the substrate, wherein a portion of the layer of magnetic material tapers towards the substrate as it approaches the undercut; removing the resist structure; and forming a write pole above the layer of magnetic material. Additional methods are disclosed.
摘要翻译：在一个实施例中的方法包括在基板的上表面上方形成抗蚀剂结构，其中基板的上表面的一部分是成形层，其中抗蚀剂结构具有底切; 在衬底的暴露区域上方沉积一层磁性材料，其中磁性材料层的一部分在接近底切时朝着衬底逐渐变细; 去除抗蚀剂结构; 并在磁性材料层之上形成写入极。公开了另外的方法。

68. 发明授权

US07630177B2 Tunnel MR head with closed-edge laminated free layer 有权
标题翻译：隧道MR头与封闭层叠自由层
公开(公告)号：US07630177B2
公开(公告)日：2009-12-08
申请号：US11355045
申请日：2006-02-14
申请人： Robert Stanley Beach , David Eugene Heim , Vladimir Nikitin , David John Seagle
发明人： Robert Stanley Beach , David Eugene Heim , Vladimir Nikitin , David John Seagle
IPC分类号： G11B5/39
CPC分类号： G11B5/398 , G01R33/09 , G11B5/399
摘要： In a tunnel magnetoresistive (TMR) device, free sublayers are separated by an intermediate spacer layer that serves to ensure a uniform circumferential magnetization in the free stack, counterbalancing orange-peel coupling by antiferromagnetic exchange coupling. Thus, a CPP MR device may have a seed stack, a pinned stack on the seed stack, and a tunnel barrier on the pinned stack. A free stack can be on the tunnel barrier, and the free stack can include structure for promoting uniform circumferential magnetization in the free stack.
摘要翻译：在隧道磁阻（TMR）器件中，自由子层由中间间隔层隔开，中间间隔层用于确保自由堆叠中的均匀圆周磁化，通过反铁磁交换耦合平衡橙皮耦合。因此，CPP MR装置可以具有种子堆叠，种子堆叠上的钉扎堆叠以及钉扎堆叠上的隧道势垒。自由堆叠可以在隧道屏障上，并且自由堆叠可以包括用于在自由堆叠中促进均匀周向磁化的结构。

69. 发明申请

US20090141397A1 PERPENDICULAR MAGNETIC WRITE HEAD WITH STEPPED WRITE POLE FOR REDUCED MCW DEPENDENCY ON SKEW ANGLE 有权
标题翻译：具有逐步写入功能的扁平磁头，用于减少MCW依赖于角度角
公开(公告)号：US20090141397A1
公开(公告)日：2009-06-04
申请号：US11949620
申请日：2007-12-03
申请人： Wen-Chien David Hsiao , Yimin Hsu , Quan-chiu Harry Lam , Yansheng Luo , Vladimir Nikitin , Changqing Shi
发明人： Wen-Chien David Hsiao , Yimin Hsu , Quan-chiu Harry Lam , Yansheng Luo , Vladimir Nikitin , Changqing Shi
IPC分类号： G11B5/127 , G11B5/23
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/3146 , G11B5/315
摘要： A magnetic write head for perpendicular magnetic data recording having a notched write pole for reduced magnetic core width (MCW) dependence on skew. The write pole is configured with a notch that can extend to or slightly beyond the flare point of the write pole, and is formed on the leading portion of the write pole. The notch can have a notch depth, as measured from the ABS of 50-200 nm or about 120 nm. The notch can have a notch height, measured in the down track direction that is 40-90 nm or 20-90 percent of the write pole height.
摘要翻译：用于垂直磁数据记录的磁写头，具有用于减小磁芯宽度（MCW）的偏斜写入极对偏斜的依赖性。写入极配置有可以延伸到或稍微超过写入极的闪点的凹口，并且形成在写入极的引导部分上。切口可以具有从50-200nm或约120nm的ABS测量的切口深度。切口可以具有沿向下方向测量的切口高度，其为40-90nm或写入极高度的20-90％。

70. 发明授权

US07538976B2 Trailing shield design for reducing wide area track erasure (water) in a perpendicular recording system 失效
标题翻译：拖尾盾设计，用于减少垂直记录系统中的广域轨迹擦除（水）
公开(公告)号：US07538976B2
公开(公告)日：2009-05-26
申请号：US11412017
申请日：2006-04-25
申请人： Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin
发明人： Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin
IPC分类号： G11B5/127
CPC分类号： G11B5/3146 , G11B5/11 , G11B5/1278 , G11B5/3116
摘要： A magnetic structure for use in a magnetic head for avoiding wide angle track erasure and other forms of adjacent track interference. The magnetic structure includes a trailing shield having a specially configured back edge opposite the air bearing surface ABS. The magnetic shield has a shallow substantially constant throat height at a center portion. Then, the back edge of the shield tapers back away from the ABS in first and second intermediate portion located at either side of the center portion. These intermediate portions lead to first and second outer portions that have substantially constant throat heights that are larger than the throat height at the center region. The throat height at each of the laterally outer portions can be 1.5 to 5 times the throat height of the center portion. This configuration, chokes off stray fields that might be picked up by the outer portions of the shield preventing excessive magnetic flux from reaching the central portion of the shield where it might affect writing. In addition, the limited throat height of the outer portion (ie. the back edge of the outer portions does not keep tapering back away from the ABS) prevents the outer portions from picking up too much stray magnetic field, while also ensuring that sufficient magnetic material will be present to absorb desired magnetic field from the write pole during use.
摘要翻译：用于磁头的磁结构，用于避免广角跟踪擦除和其他形式的相邻轨道干扰。磁性结构包括后挡板，其具有与空气轴承表面ABS相对的特殊配置的后边缘。磁屏蔽件在中心部分具有浅实质上恒定的喉部高度。然后，屏蔽件的后边缘在位于中心部分两侧的第一和第二中间部分中从ABS逐渐变细。这些中间部分导致第一和第二外部部分具有大于喉部高度在中心区域处大致恒定的喉部高度。每个横向外部部分的喉部高度可以是中心部分的喉部高度的1.5至5倍。这种构造可以消除可能由屏蔽外部拾取的杂散场，防止过多的磁通量到达屏蔽的中心部分，从而可能影响写入。此外，外部部分的限制喉部高度（即，外部部分的后边缘不保持从ABS退回）防止外部部分拾取太多的杂散磁场，同时还确保足够的磁将存在材料以在使用期间从写入极吸收期望的磁场。

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