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81. 发明授权

US09214168B1 Method and system for providing a magnetic transducer having improved shield-to-shield spacing 有权
标题翻译：用于提供具有改进的屏蔽到屏蔽间隔的磁换能器的方法和系统
公开(公告)号：US09214168B1
公开(公告)日：2015-12-15
申请号：US14012979
申请日：2013-08-28
申请人： Western Digital (Fremont), LLC
发明人： Chando Park , Qunwen Leng , Sangmun Oh , Mahendra Pakala
IPC分类号： G11B5/39 , G11B5/31 , G11B5/147
CPC分类号： G11B5/3116 , G01R33/093 , G11B5/147 , G11B5/3906 , G11B5/3929 , H01F10/30 , H01F10/3272 , H01L43/08 , Y10T428/1193
摘要： A method and system for providing a magnetic transducer is described. The method and system include providing a magnetic structural barrier layer and a crystalline magnetic layer on the magnetic structural barrier layer. The magnetic structural barrier layer may reside on a shield. The method and system also include providing a nonmagnetic layer on the crystalline magnetic layer. A pinning layer is provided on the nonmagnetic layer. Similarly, a pinned layer is provided on the pinning layer. The pinning layer is magnetically coupled with the pinned layer. The method and system also include providing a free layer and a nonmagnetic spacer layer between the pinned layer and the free layer.
摘要翻译：描述了一种用于提供磁换能器的方法和系统。该方法和系统包括在磁结构阻挡层上提供磁结构阻挡层和结晶磁性层。磁结构阻挡层可以驻留在屏蔽上。该方法和系统还包括在结晶磁性层上提供非磁性层。在非磁性层上设置钉扎层。类似地，钉扎层设置在钉扎层上。钉扎层与被钉扎层磁耦合。该方法和系统还包括在被钉扎层和自由层之间提供自由层和非磁性间隔层。

82. 发明授权

US09202493B1 Method of making an ultra-sharp tip mode converter for a HAMR head 有权
标题翻译：制造用于HAMR头的超锋利尖端模式转换器的方法
公开(公告)号：US09202493B1
公开(公告)日：2015-12-01
申请号：US14287467
申请日：2014-05-27
申请人： Western Digital (Fremont), LLC
发明人： Dujiang Wan , Ge Yi , Lijie Zhao , Zhong Shi , Hai Sun
IPC分类号： G11B11/00 , B29D11/00 , G11B5/127 , G11B5/48 , G11B5/00
CPC分类号： G11B5/6088 , G11B5/314 , G11B2005/0021
摘要： A mode converter for use in a Heat-assisted magnetic recording (HAMR) read head to couple or bend light (e.g., from an external laser diode) into a tapered waveguide, and subsequently, to a near field transducer is provided. The mode converter may have an ultra-sharp tip, e.g., less than 200 nm to achieve a desired optical output. Manufacturing such a mode converter involves a two-pattern transform process, where overlay control (using a first edge, such as a right edge, as a reference layer relative to which positioning of a second edge, such as a left edge, is measured) allows for aligning of the right and left edges of a tip portion of the mode converter to ultimately create the ultra-sharp tip.
摘要翻译：提供了一种用于热辅助磁记录（HAMR）读头以将光（例如，从外部激光二极管）耦合或弯曲成锥形波导的模式转换器，并且随后提供给近场换能器。模式转换器可以具有超尖尖，例如小于200nm，以实现期望的光输出。制造这种模式转换器涉及双模式变换过程，其中覆盖控制（使用诸如右边缘的第一边缘作为参考层，相对于第二边缘（例如左边缘的定位）被测量）允许模式转换器的尖端部分的左右边缘对准，以最终产生超尖锐尖端。

83. 发明授权

US09194692B1 Systems and methods for using white light interferometry to measure undercut of a bi-layer structure 有权
标题翻译：使用白光干涉测量来测量双层结构底切的系统和方法
公开(公告)号：US09194692B1
公开(公告)日：2015-11-24
申请号：US14275502
申请日：2014-05-12
申请人： Western Digital (Fremont), LLC
发明人： Robert W. Beye , Sean T. Poh
IPC分类号： G01B9/023 , G01B11/03 , G01B11/06 , G03F7/30 , G01B11/02 , G01B11/14 , G01B11/24 , G01B9/02
CPC分类号： G01B11/2441 , G01B9/0209 , G01B9/04 , G01B11/028 , G01B11/0675 , G01B11/14 , G01N21/88 , G03F7/30
摘要： Systems and methods for using white light interferometry to measure undercut of a bi-layer structure are provided. One such method involves performing a first scan of a first bi-layer structure with a microscope using a first scan range, where the microscope is configured for white light interferometry, generating a first interferogram using data from the first scan, performing a second scan of the first bi-layer structure with the microscope using a second scan range, generating a second interferogram using data from the second scan, determining a first distance between features of the first interferogram, determining a second distance between features of the second interferogram, and calculating a width of the undercut based on the first distance and the second distance. One such system involves using the microscope and/or a computer to perform one or more actions of this method.
摘要翻译：提供了使用白光干涉测量来测量双层结构底切的系统和方法。一种这样的方法包括使用第一扫描范围用显微镜执行第一双层结构的第一扫描，其中显微镜被配置用于白光干涉测量，使用来自第一扫描的数据产生第一干涉图，执行第二扫描第一双层结构，其中显微镜使用第二扫描范围，使用来自第二扫描的数据产生第二干涉图，确定第一干涉图的特征之间的第一距离，确定第二干涉图的特征之间的第二距离和计算基于第一距离和第二距离的底切的宽度。一个这样的系统涉及使用显微镜和/或计算机执行该方法的一个或多个动作。

84. 发明授权

US09190085B1 Waveguide with reflective grating for localized energy intensity 有权
标题翻译：具有反射光栅的波导用于局部能量强度
公开(公告)号：US09190085B1
公开(公告)日：2015-11-17
申请号：US14321786
申请日：2014-07-01
申请人： Western Digital (Fremont), LLC
发明人： Hongxing Yuan , Jinshan Li , Zhong Shi
IPC分类号： G11B7/00 , G11B5/48 , G11B7/1384 , G11B5/60 , G11B7/12 , G02B6/34 , G11B5/00
CPC分类号： G11B5/4866 , G02B6/00 , G02B6/122 , G02B6/34 , G11B5/6088 , G11B7/1206 , G11B7/124 , G11B7/1384 , G11B2005/0021
摘要： An apparatus includes a waveguide with first and second sections, and a junction coupling the first and second waveguide sections together. The first waveguide section has a first reflective device and the second section comprising a second reflective device arranged to generate a standing wave in the waveguide with maximum energy wave intensity at a target region of the waveguide in response to an incident energy wave being provided into at least one of the waveguide sections.
摘要翻译：一种装置包括具有第一和第二部分的波导和将第一和第二波导部分连接在一起的结。所述第一波导部分具有第一反射装置，所述第二部分包括第二反射装置，所述第二反射装置被布置成响应于入射能量波被设置在所述波导中的所述波导的目标区域处以最大的能量波强度在所述波导中产生驻波至少一个波导部分。

85. 发明申请

US20150279393A1 TUNNEL MAGNETORESISTANCE READ HEAD WITH NARROW SHIELD-TO-SHIELD SPACING 有权
标题翻译： TUNNEL MAGNETORESISTANCE阅读头与NARROW SHIELD-TO-SHIELD SPACING
公开(公告)号：US20150279393A1
公开(公告)日：2015-10-01
申请号：US14740027
申请日：2015-06-15
申请人： Western Digital (Fremont), LLC
发明人： RONGFU XIAO , GUANXIONG LI , ZHIHONG ZHANG , MING MAO , CHEN-JUNG CHIEN
IPC分类号： G11B5/39
CPC分类号： G11B5/3909 , G01R33/098 , G11B5/3163 , G11B5/3912 , G11B5/398 , H01L43/12 , Y10T29/49052
摘要： A tunnel magnetoresistance (TMR) read sensor having a tabbed AFM layer and an extended pinned layer and methods for making the same are provided. The TMR read sensor has an AFM layer recessed from the air bearing surface, providing a reduced shield-to-shield distance.
摘要翻译：提供具有带标签的AFM层和扩展的钉扎层的隧道磁阻（TMR）读取传感器及其制造方法。 TMR读取传感器具有从空气轴承表面凹入的AFM层，从而减少屏蔽与屏蔽距离。

86. 发明授权

US09123358B1 Conformal high moment side shield seed layer for perpendicular magnetic recording writer 有权
标题翻译：用于垂直磁记录刻录机的保形高力侧屏蔽种子层
公开(公告)号：US09123358B1
公开(公告)日：2015-09-01
申请号：US14246821
申请日：2014-04-07
申请人： Western Digital (Fremont), LLC
发明人： Feng Liu , Dehua Han , Yugang Wang , Zhigang Bai , Tao Pan
IPC分类号： G11B5/11 , G11B5/23 , G11B5/48
CPC分类号： G11B5/11 , G11B5/1278 , G11B5/23 , G11B5/3116 , G11B5/315 , G11B5/4886
摘要： A perpendicular magnetic recording writer for use in a data storage device, the recording transducer has a magnetic writer pole, a pole tip facing an air bearing surface (ABS). The pole tip has a pole face, leading side wall, a trailing side wall, a first side wall and a second side wall. A trailing side wall nonmagnetic gap layer on the trailing side wall, a first side wall nonmagnetic gap layer deposited on the first side wall, and a second side wall nonmagnetic gap layer deposited on the second side wall. A high magnetic moment seed layer is deposited on the trailing side wall nonmagnetic gap layer, the first side wall nonmagnetic gap layer, and the second side wall nonmagnetic gap layer. In other aspects of the invention shields are provided that have magnetic moments less than the magnetic moment of the seed layers.
摘要翻译：一种在数据存储装置中使用的垂直磁记录刻录机，记录换能器具有磁写入极，极尖面向空气轴承表面（ABS）。极尖具有极面，前侧壁，后侧壁，第一侧壁和第二侧壁。在后侧壁上的后侧壁非磁性间隙层，沉积在第一侧壁上的第一侧壁非磁性间隙层和沉积在第二侧壁上的第二侧壁非磁性间隙层。在后侧壁非磁性间隙层，第一侧壁非磁性间隙层和第二侧壁非磁性间隙层上沉积高磁矩种子层。在本发明的其它方面，提供了具有小于种子层的磁矩的磁矩的屏蔽。

87. 发明授权

US09111550B1 Write transducer having a magnetic buffer layer spaced between a side shield and a write pole by non-magnetic layers 有权
标题翻译：具有通过非磁性层在侧面屏蔽和写入极之间隔开的磁性缓冲层的写入传感器
公开(公告)号：US09111550B1
公开(公告)日：2015-08-18
申请号：US14560212
申请日：2014-12-04
申请人： Western Digital (Fremont), LLC
发明人： Feng Liu , Zhanjie Li
IPC分类号： G11B5/11
CPC分类号： G11B5/11 , G11B5/1278 , G11B5/3116 , G11B5/315
摘要： A write transducer for a disk drive magnetic head includes a ferromagnetic write yoke having a write pole protruding towards an air bearing surface. The write transducer also includes a ferromagnetic side shield, and a ferromagnetic buffer layer disposed between the write yoke and the side shield. A first non-magnetic layer is disposed between the side shield and the ferromagnetic buffer layer. A second non-magnetic layer is disposed between the ferromagnetic buffer layer and the write yoke. The ferromagnetic buffer layer extends in a direction normal to the air bearing surface by a buffer layer throat height in the range of 10 nm to 500 nm. In certain embodiments, such a write transducer may advantageously reduce undesired wide area track erasure, without unacceptably degrading write field rise time for acceptable on-track writing data rate.
摘要翻译：用于磁盘驱动器磁头的写入传感器包括具有向空气轴承表面突出的写入磁极的铁磁写入磁轭。写入传感器还包括铁磁侧屏蔽和设置在写磁轭和侧屏蔽之间的铁磁缓冲层。第一非磁性层设置在侧屏蔽和铁磁缓冲层之间。第二非磁性层设置在铁磁缓冲层和写磁轭之间。铁磁缓冲层通过在10nm至500nm的范围内的缓冲层喉部高度沿垂直于空气轴承表面的方向延伸。在某些实施例中，这样的写入传感器可以有利地减少不期望的广域磁道擦除，而不会不可接受地降低可读的磁道上写入数据速率的写入场上升时间。

88. 发明授权

US09099145B1 High contrast alignment marker 有权
标题翻译：高对比度对准标记
公开(公告)号：US09099145B1
公开(公告)日：2015-08-04
申请号：US14216610
申请日：2014-03-17
申请人： Western Digital (Fremont), LLC
发明人： Ouyang Bin , Chee Kheng Lim
IPC分类号： G11B11/00 , G11B13/04
CPC分类号： G11B5/314 , G11B5/3163 , G11B5/6088 , G11B2005/0021
摘要： A slider and method of making same to reduce contrast interference for visual identification of alignment marks on the slider for heat assisted magnetic recording (HAMR) includes a plurality of alignment marks arranged for alignment of a chip on submount assembly (COSA) with respect to the slider, and at least one shield arranged with the plurality of alignment marks. A hard disk drive includes a plurality of alignment marks arranged for alignment of a chip on submount assembly (COSA) with respect to the slider, and at least one shield arranged with the plurality of alignment marks.
摘要翻译：用于减少用于热辅助磁记录的滑块上的对准标记的视觉识别的对比度干扰的滑块和方法包括多个对准标记，其布置成用于将底座组件（COSA）上的芯片相对于滑块，以及布置有多个对准标记的至少一个屏蔽件。硬盘驱动器包括多个对准标记，其布置成用于对准基座组件（COSA）上的芯片相对于滑块，以及布置有多个对准标记的至少一个屏蔽件。

89. 发明授权

US09087542B1 Method for providing a structure having reduced voids in a magnetic recording transducer 有权
标题翻译：提供在磁记录传感器中具有减小的空隙的结构的方法
公开(公告)号：US09087542B1
公开(公告)日：2015-07-21
申请号：US13710199
申请日：2012-12-10
申请人： Western Digital (Fremont), LLC
发明人： Yufeng Hu , Ut Tran , Shawn M. Tanner , Jerome S. Marcelino , Jikou Zhou
IPC分类号： H01L21/311 , G11B5/84 , H01L21/316 , H01L21/3105 , G11B5/31 , G02B6/136 , H01L21/02 , G02B6/132 , H01L21/762
CPC分类号： G11B5/84 , G02B6/132 , G02B6/136 , G11B5/314 , G11B5/3163 , G11B2005/0021 , H01L21/02164 , H01L21/31053 , H01L21/31608 , H01L21/76224
摘要： A method for fabricating a structure in a magnetic recording transducer is described. A trench having sidewalls converging in a corner and a depth is formed. A dielectric layer is deposited using physical vapor deposit (PVD). The dielectric layer thickness is not more than one-half of the trench depth. A remaining portion of the trench is unfilled by the dielectric layer and has a top and a bottom. A portion of the dielectric layer is plasma etched. The plasma etch removes the portion of the dielectric layer at the top of the trench at a first rate and removes the portion of the dielectric layer at the bottom of the remaining portion of the trench at a second rate less than the first rate. An additional dielectric layer is deposited, also using PVD. The plasma etch and additional dielectric layer depositing steps are optionally repeated until the trench is filled.
摘要翻译：描述了一种在磁记录换能器中制造结构的方法。形成具有在角部收敛的侧壁和深度的沟槽。使用物理气相沉积（PVD）沉积介电层。电介质层厚度不超过沟槽深度的一半。沟槽的剩余部分未被电介质层填充并具有顶部和底部。电介质层的一部分被等离子体蚀刻。等离子体蚀刻以第一速率去除沟槽顶部的电介质层的部分，并以小于第一速率的第二速率去除沟槽剩余部分底部的电介质层的部分。还使用PVD沉积另外的介电层。任选地重复等离子体蚀刻和附加电介质层沉积步骤，直到填充沟槽。

90. 发明授权

US09087527B1 Apparatus and method for middle shield connection in magnetic recording transducers 有权
标题翻译：磁记录传感器中屏蔽连接的装置和方法
公开(公告)号：US09087527B1
公开(公告)日：2015-07-21
申请号：US14526335
申请日：2014-10-28
申请人： Western Digital (Fremont), LLC
发明人： Shaoping Li , Steven C. Rudy , Gerardo A. Bertero , Yunfei Ding , Christopher L. Beaudry
IPC分类号： G11B5/187 , G11B5/33
CPC分类号： G11B5/02 , G11B5/11 , G11B5/3909 , G11B5/3912 , G11B5/3958 , G11B5/4886 , G11B2005/3996
摘要： A read transducer having a first read sensor, a second read sensor, and a first middle shield is provided. The second read sensor is disposed in a down track direction from the first read sensor. The first middle shield is disposed between the first read sensor and the second read sensor. The first middle shield includes a first metallic middle shield layer disposed between the first read sensor and the second read sensor, a second metallic middle shield layer disposed between the first metallic middle shield layer and the second read sensor, and a first magnetic-spacer layer disposed between the first metallic middle shield layer and the second metallic middle shield layer. The first metallic middle shield layer and the second metallic middle shield layer have substantially the same polarity.
摘要翻译：提供具有第一读取传感器，第二读取传感器和第一中间屏蔽的读取传感器。第二读取传感器沿着第一读取传感器的向下的轨道方向设置。第一中间屏蔽设置在第一读取传感器和第二读取传感器之间。第一中间屏蔽包括设置在第一读取传感器和第二读取传感器之间的第一金属中间屏蔽层，设置在第一金属中间屏蔽层和第二读取传感器之间的第二金属中间屏蔽层，以及第一磁性间隔层设置在第一金属中间屏蔽层和第二金属中间屏蔽层之间。第一金属中间屏蔽层和第二金属中间屏蔽层具有大致相同的极性。

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