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21. 发明授权

US08537494B1 PMR head with an angled stitch layer 有权
标题翻译： PMR头与一个角度的缝合层
公开(公告)号：US08537494B1
公开(公告)日：2013-09-17
申请号：US11935508
申请日：2007-11-06
申请人： Tao Pan , Yugang Wang , Kroum S. Stoev
发明人： Tao Pan , Yugang Wang , Kroum S. Stoev
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/313 , G11B5/3146 , G11B5/315 , G11B5/3163
摘要： A method and system for providing a magnetic transducer having an air-bearing surface (ABS) are described. The magnetic transducer includes a perpendicular magnetic recording (PMR) pole, an additional pole, a stitch, a shield, a write gap between the PMR pole and a portion of the shield, and at least one coil that energizes at least the additional pole. The PMR pole has a first front portion proximate to the ABS, while the additional pole is recessed from the ABS. The stitch resides between the PMR pole and the additional pole and has a stitch front portion between the front portion of the PMR pole and the additional pole. At least a portion of the write gap resides on the front portion of the PMR pole. At least a portion of the additional pole resides between the PMR pole and the shield.
摘要翻译：描述了一种用于提供具有空气轴承表面（ABS）的磁换能器的方法和系统。磁换能器包括垂直磁记录（PMR）极，附加极，线迹，屏蔽，PMR极与屏蔽的一部分之间的写间隙，以及至少一个激励至少附加极的线圈。 PMR杆具有靠近ABS的第一前部，而附加杆从ABS凹入。该线圈位于PMR极和附加极之间，并且在PMR极的前部和附加极之间具有针迹前部。写入间隙的至少一部分位于PMR极的前部。附加极点的至少一部分位于PMR极与屏蔽之间。

22. 发明授权

US08520336B1 Magnetic recording head with nano scale pole tip bulge 有权
标题翻译：磁记录头带有纳米级极尖凸起
公开(公告)号：US08520336B1
公开(公告)日：2013-08-27
申请号：US13315098
申请日：2011-12-08
申请人： Feng Liu , Tao Pan , Zhigang Bai , Yugang Wang , Sining Mao
发明人： Feng Liu , Tao Pan , Zhigang Bai , Yugang Wang , Sining Mao
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/3116
摘要： A perpendicular magnetic recording head for use in a hard disk drive has a main pole that has a main pole tip in proximity to an air bearing surface. The main pole tip has a first width at the ABS, extending distally at a first angle measured from the plane of the ABS to a second width measured at a first distance from the ABS. The main pole tip extends distally at a second angle measured from the plane of the ABS from the second width to a third width, wherein the second angle is less than the first angle. The main pole tip extends distally at a third angle measured from the plane of the ABS from the third width to a fourth width, wherein the third angle is greater than the second angle. The first distance is between 25 and 100 nanometers.
摘要翻译：用于硬盘驱动器的垂直磁记录头具有主极，该主极具有靠近空气轴承表面的主极尖。主极端部在ABS处具有第一宽度，以从ABS的平面测量的第一角度向距离ABS的第一距离测量的第二宽度向远侧延伸。主极尖以从ABS的平面从第二宽度测量到第二宽度的第二角度向远侧延伸，其中第二角度小于第一角度。主极尖以从ABS的平面测量的第三角度从第三宽度向第四宽度向远侧延伸，其中第三角度大于第二角度。第一个距离在25到100纳米之间。

23. 发明授权

US07688546B1 Perpendicular magnetic recording head having nonmagnetic insertion layers 有权
标题翻译：具有非磁性插入层的垂直磁记录头
公开(公告)号：US07688546B1
公开(公告)日：2010-03-30
申请号：US11643493
申请日：2006-12-21
申请人： Zhigang Bai , Peng Luo , Kroum S. Stoev , Francis H. Liu , Yugang Wang , Adam F. Torabi
发明人： Zhigang Bai , Peng Luo , Kroum S. Stoev , Francis H. Liu , Yugang Wang , Adam F. Torabi
IPC分类号： G11B5/17
CPC分类号： G11B5/3116 , G11B5/1278
摘要： The method and system provide a perpendicular magnetic recording (PMR) head having an air bearing surface (ABS). The PMR head includes first and second poles each having front and back gap regions, a first nonmagnetic insertion layer between the back gap regions, a magnetic pole layer with a front terminating at the ABS, a write gap, shield(s), a second nonmagnetic insertion layer between the second pole back gap region and the shield(s), and coil(s) between the shield(s) and the first pole. The magnetic pole layer terminates between the ABS and the second pole back gap region and has pole angle(s) of at least thirty and not more than fifty degrees. At least part of the magnetic pole layer resides on the second pole. Part of the shield(s) are adjacent to the write gap. Another part of the shield(s) is coupled with the second pole back gap region.
摘要翻译：该方法和系统提供具有空气轴承表面（ABS）的垂直磁记录（PMR）头。 PMR头包括第一和第二极，每个具有前后间隙区域，在后间隙区域之间的第一非磁性插入层，在ABS处终止于前面的磁极层，写入间隙，屏蔽，第二极第二极背间隙区域和屏蔽之间的非磁性插入层以及屏蔽和第一极之间的线圈。磁极层终止在ABS和第二极背间隙区域之间，并且具有至少三十度且不超过五十度的极角。磁极层的至少一部分位于第二极上。屏蔽的一部分与写入间隙相邻。屏蔽的另一部分与第二极背隙区域耦合。

24. 发明授权

US07113366B1 Double-nosed inductive transducer with reduced off-track writing 有权
标题翻译：双向电感式换能器，减少了离轨写入
公开(公告)号：US07113366B1
公开(公告)日：2006-09-26
申请号：US10290880
申请日：2002-11-07
申请人： Yugang Wang , Kroum Stoev , Francis Liu , Yingjian Chen
发明人： Yugang Wang , Kroum Stoev , Francis Liu , Yingjian Chen
IPC分类号： G11B5/187
CPC分类号： G11B5/3116
摘要： A thin film electromagnetic head has an inductive transducer with a double-nosed ferromagnetic trailing pole layer. The trailing pole layer has a trailing pole tip disposed adjacent to a media-facing surface, a trailing pole yoke disposed distal to the media-facing surface, and a trailing pole nose disposed between the trailing pole tip and the trailing pole yoke. The media-facing surface extends as a substantially flat surface in all directions from the trailing pole tip. The length of the trailing pole nose may be at least twice as long as the trailing pole tip length. The width of the trailing pole nose can be 10 to 30 times as wide as the trailing pole tip width. An inductive transducer having a double-nosed trailing pole layer provides a higher ratio of on-track to off-track write fields, thereby improving the density with which data can be written to the recording media. Such a double-nosed trailing pole layer can be used in transducers for either longitudinal or perpendicular magnetic recording.
摘要翻译：薄膜电磁头具有具有双尖铁磁后极层的感应换能器。后极层具有邻近面向媒体的表面设置的尾极尖端，设置在面向介质的表面的远侧的后极轭，以及设置在后极端和后极轭之间的后极端。面向媒体的表面作为从所述尾杆末端的所有方向上的基本上平坦的表面延伸。尾杆鼻部的长度可以至少是尾杆末端长度的两倍。尾杆鼻的宽度可以是尾杆尖宽度的10至30倍。具有双端尾磁极层的电感式换能器提供了较高的导轨与非磁道写磁场的比率，从而提高了数据可以写入记录介质的密度。这样的双头后磁极层可用于用于纵向或垂直磁记录的换能器中。

25. 发明授权

US06721138B1 Inductive transducer with stitched pole tip and pedestal defining zero throat height 有权
标题翻译：具有缝合极尖和底座的感应传感器，定义零喉部高度
公开(公告)号：US06721138B1
公开(公告)日：2004-04-13
申请号：US09999694
申请日：2001-10-24
申请人： Yingjian Chen , Xizeng Shi , Hugh Craig Hiner , Zi-Wen Dong , Francis Liu , Matthew R. Gibbons , Joyce Anne Thompson , William D. Jensen , Chester Xiaowen Chien , Yugang Wang
发明人： Yingjian Chen , Xizeng Shi , Hugh Craig Hiner , Zi-Wen Dong , Francis Liu , Matthew R. Gibbons , Joyce Anne Thompson , William D. Jensen , Chester Xiaowen Chien , Yugang Wang
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3116 , G11B5/313 , G11B5/3146 , G11B5/3153 , G11B5/3163 , G11B5/3909 , G11B5/3967 , G11B2005/3996
摘要： An inductive transducer having first and second magnetic pedestals disposed between first and second magnetic pole layers and adjacent to a media-facing surface, the pedestals separated by a submicron, nonmagnetic gap. The first pedestal extends less than the second pedestal from the media-facing surface, defining a short throat height. The second pedestal extends further to provide sufficient area for stitching to the second pole layer. The stitching and the thickness provided by the pedestals allow plural coil layers to be disposed between the pole layers, and the second pedestal, as well as other features, can be defined by high-resolution photolithography. The two coil layers have lower resistance, lower inductance and allow the pole layers to be shorter, improving performance. All or part of either or both of the pedestals may be formed of high magnetic saturation material, further enhancing performance.
摘要翻译：一种感应换能器，其具有设置在第一和第二磁极层之间并且邻近介质面向表面的第一和第二磁性基座，所述基座由亚微米非磁性间隙分开。第一基座从面向介质的表面延伸小于第二基座，限定短的喉部高度。第二基座进一步延伸以提供足够的面积用于缝合到第二极层。由基座提供的缝合和厚度允许在极层之间设置多个线圈层，并且第二基座以及其它特征可以通过高分辨率光刻来定义。两个线圈层具有较低的电阻，较低的电感，并允许极层更短，从而提高性能。基座中的一个或两个的全部或一部分可以由高磁饱和材料形成，进一步提高性能。

26. 发明授权

US5886959A Thin-film electro-magnetic coil design for use in a flying magneto-optical head 失效
标题翻译：用于飞行磁光头的薄膜电磁线圈设计
公开(公告)号：US5886959A
公开(公告)日：1999-03-23
申请号：US19225
申请日：1998-02-04
申请人： Peter G. Bischoff , Yugang Wang
发明人： Peter G. Bischoff , Yugang Wang
IPC分类号： G11B5/127 , G11B5/17 , G11B5/31 , G11B7/12 , G11B7/135 , G11B11/105 , G11B11/00
CPC分类号： G11B7/1384 , G11B11/10534 , G11B11/1058 , G11B7/122 , G11B11/10543 , G11B11/10554 , G11B5/1278 , G11B5/17 , G11B5/313
摘要： A thin-film coil for use in a flying magneto-optical data storage system is formed on an undercoat layer, and includes an underside and a conductor deposited on the undercoat layer. The conductor is covered by an insulation layer on which a yoke is formed for providing a path to a magnetic field generated by the conductor. The yoke is formed of three sections: an upper section, an intermediate section, and the tip. The yoke tip defines an optical opening and has its underside substantially flush with the underside of the undercoat layer for increasing the density of the magnetic field at a target distance from the coil. The yoke tip underside is defined by an inner edge that delineates the optical opening, and that is formed of two semi-circular sections and two linear sections tangential to the semi-circular sections. The yoke can optionally include an outer section that extends over the peripheral side of the insulation layer and that further extends in an enlarged toe section.
摘要翻译：用于飞行磁光数据存储系统的薄膜线圈形成在底涂层上，并且包括下侧和沉积在底涂层上的导体。导体被绝缘层覆盖，其上形成有轭以提供由导体产生的磁场的路径。磁轭由三部分组成：上部，中间部分和末端。轭头限定了光学开口，并且其下侧基本上与底涂层的下侧齐平，以增加距离线圈的目标距离处的磁场的密度。轭尖下侧由描绘光学开口的内边缘限定，并且由两个半圆形部分和与半圆形切片相切的两个直线部分形成。磁轭可以可选地包括在绝缘层的周边侧延伸并且在扩大的脚趾部分中进一步延伸的外部部分。

27. 发明授权

US08520337B1 Perpendicular magnetic recording writer pole with leading and trailing bevel side wall angles at air bearing surface 有权
标题翻译：垂直磁记录笔杆，空气轴承表面具有前后斜面侧壁角
公开(公告)号：US08520337B1
公开(公告)日：2013-08-27
申请号：US13436712
申请日：2012-03-30
申请人： Feng Liu , Zhigang Bai , Yugang Wang , Jinqiu Zhang , Ying Hong , Tao Pan
发明人： Feng Liu , Zhigang Bai , Yugang Wang , Jinqiu Zhang , Ying Hong , Tao Pan
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/315
摘要： A perpendicular magnetic recording transducer with leading and trailing bevel side wall angles at air bearing surface for use in a data storage device is provided. The transducer includes a magnetic writer pole having a pole tip facing an air bearing surface (ABS). The pole tip includes a pole tip face having a leading edge, a trailing edge, a first side wall, and a second side wall. The first side wall includes a first side wall section adjoining the leading edge and a second side wall section adjoining the trailing edge. The first side wall section is at a first angle measured from a perpendicular center line dividing the trailing edge. The second side wall section is at a second angle measured from a perpendicular center line dividing the trailing edge. The second angle is greater than three degrees. The first angle is greater than the second angle.
摘要翻译：提供了一种用于数据存储装置的在空气轴承表面具有前后倾斜侧壁角度的垂直磁记录传感器。换能器包括具有面向空气轴承表面（ABS）的极尖的磁性写入极。极尖包括具有前缘，后缘，第一侧壁和第二侧壁的极尖端面。第一侧壁包括邻接前缘的第一侧壁部分和与后缘相邻的第二侧壁部分。第一侧壁部分是从分割后缘的垂直中心线测量的第一角度。第二侧壁部分是从分割后缘的垂直中心线测量的第二角度。第二个角度大于三度。第一角度大于第二角度。

28. 发明授权

US08373945B1 Magnetic writer having a split yoke 有权
标题翻译：磁性刻录机具有分叉
公开(公告)号：US08373945B1
公开(公告)日：2013-02-12
申请号：US11789190
申请日：2007-04-23
申请人： Peng Luo , Zhigang Bai , Yugang Wang , Kroum S. Stoev , Francis H. Liu
发明人： Peng Luo , Zhigang Bai , Yugang Wang , Kroum S. Stoev , Francis H. Liu
IPC分类号： G11B5/31 , G11B5/17
CPC分类号： G11B5/1278 , G11B5/3123
摘要： A method and system for providing a magnetic transducer are described. The magnetic transducer includes a first pole, a write gap, a second pole, a first coil, and a second coil. The first pole has a front portion on which at least a portion of the write gap resides. The second pole includes a split yoke that includes a first portion and a second portion. At least a portion of the first coil resides between the first portion of the split yoke and the first pole. At least a portion of the second coil resides between the second portion of the split yoke and the first pole.
摘要翻译：描述了一种用于提供磁换能器的方法和系统。磁换能器包括第一极，写间隙，第二极，第一线圈和第二线圈。第一极具有前部，至少部分写入间隙位于该前部。第二极包括分开轭，其包括第一部分和第二部分。第一线圈的至少一部分位于分叉轭的第一部分和第一极之间。第二线圈的至少一部分位于分叉轭的第二部分和第一极之间。

29. 发明授权

US08164855B1 Method and system for providing a write pole in an energy assisted magnetic recording disk drive 有权
标题翻译：在能量辅助磁记录磁盘驱动器中提供写极的方法和系统
公开(公告)号：US08164855B1
公开(公告)日：2012-04-24
申请号：US12614341
申请日：2009-11-06
申请人： Matthew R. Gibbons , Kroum S. Stoev , Yugang Wang , Adam F. Torabi , Lijie Guan
发明人： Matthew R. Gibbons , Kroum S. Stoev , Yugang Wang , Adam F. Torabi , Lijie Guan
IPC分类号： G11B5/127
CPC分类号： G11B5/314 , G11B5/3116 , G11B2005/0021
摘要： A method and system for providing an energy assisted magnetic recording (EAMR) transducer coupled with a laser are described. The EAMR transducer has an air-bearing surface (ABS) residing in proximity to a media during use. The method and system include providing waveguide(s), a near-field transducer (NFT), write pole(s), and coil(s). The waveguide(s) direct energy from the laser toward the ABS. The NFT is coupled with the waveguide and focuses the energy onto the media. The write pole(s) include a stitch for providing a magnetic field to the media and a yoke coupled to the stitch. The stitch includes an ABS-facing surface, a sloped surface, and an NFT-facing surface between the ABS-facing and sloped surfaces. The NFT-facing surface is substantially parallel to the NFT. The sloped surface is sloped at least twenty-five and not more than sixty-five degrees with respect to the NFT-facing surface. The coil(s) energize the write pole(s).
摘要翻译：描述了一种用于提供与激光器耦合的能量辅助磁记录（EAMR）传感器的方法和系统。 EAMR传感器在使用过程中具有驻留在介质附近的空气轴承表面（ABS）。该方法和系统包括提供波导，近场换能器（NFT），写极和线圈。波导将能量从激光器引向ABS。 NFT与波导耦合，并将能量聚焦到介质上。写极包括用于向介质提供磁场的线圈和耦合到线圈的轭。该线圈包括面向ABS的表面，倾斜表面和面向ABS和倾斜表面之间的面向NFT的表面。面向NFT的表面基本上平行于NFT。倾斜的表面相对于面向NFT的表面倾斜至少二十五度且不超过六十五度。线圈使写入极点通电。

30. 发明授权

US07660080B1 Read/write head with dynamic flying height control by magnetostriction 失效
标题翻译：通过磁致伸缩具有动态飞行高度控制的读/写头
公开(公告)号：US07660080B1
公开(公告)日：2010-02-09
申请号：US10837490
申请日：2004-04-30
申请人： Francis H. Liu , Kroum S. Stoev , Yugang Wang
发明人： Francis H. Liu , Kroum S. Stoev , Yugang Wang
IPC分类号： G11B5/56 , G11B21/24
CPC分类号： G11B5/6005 , G11B5/3133
摘要： A read/write head for use in a data storage device to control the low dynamic flying height in order to achieve high data recording storage capacity of magnetic hard drives. The read/write head is designed for use in a data storage device that includes a storage medium having a recording surface. The head comprises a pole tip region and an actuator. In turn, the actuator includes an excitation source for generating a magnetic field, and a magnetostrictive plate for expanding in response to the magnetic field, resulting in a protrusion in a section of the pole tip region along a direction towards the recording surface, so that the head flies above the recording surface at a flying height lower than a nominal flying height.
摘要翻译：一种用于数据存储设备的读/写头，用于控制低动态飞行高度，以实现磁性硬盘驱动器的高数据记录存储容量。读/写头设计用于包括具有记录表面的存储介质的数据存储设备。头包括极尖区域和致动器。继而，致动器包括用于产生磁场的激励源和用于响应于磁场而扩展的磁致伸缩板，导致极尖区域沿着朝向记录表面的方向的一部分突出，使得头部在低于标称飞行高度的飞行高度处在记录表面上方飞行。

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