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1. 发明授权

US07869160B1 Perpendicular recording head with shaped pole surfaces for higher linear data densities 有权
标题翻译：垂直记录头，具有成形极面，可实现更高的线性数据密度
公开(公告)号：US07869160B1
公开(公告)日：2011-01-11
申请号：US11116658
申请日：2005-04-27
申请人： Tao Pan , Kroum S. Stoev , Yugang Wang , Jack M. Chue
发明人： Tao Pan , Kroum S. Stoev , Yugang Wang , Jack M. Chue
IPC分类号： G11B5/23 , G11B5/187 , G11B5/31 , G11B5/39
CPC分类号： G11B5/3116 , G11B5/11 , G11B5/1278 , G11B5/1871 , G11B5/23 , G11B5/3146 , G11B5/3163
摘要： A perpendicular recording head is provided having a bottom pole, a writer pole disposed above the bottom pole, and a top shield disposed above the writer pole. The bottom pole and the top shield are both magnetically coupled to the writer pole. The writer pole includes a concave facing surface that faces the top shield. The top shield can include a convex surface that faces the writer pole. The top shield can also include a pedestal that protrudes towards the writer pole.
摘要翻译：设置有垂直记录头，其具有底极，设置在底极上方的写入极和设置在写入极上方的顶部屏蔽。底极和顶部屏蔽都与磁极耦合。写入器极包括面向顶部屏蔽的面向凹面的表面。顶部屏蔽件可以包括面向写入极的凸面。顶部屏蔽还可以包括朝着写入杆突出的基座。

2. 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。

3. 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。

4. 发明授权

US07337530B1 Method for manufacturing a shielded pole magnetic head for perpendicular recording 有权
标题翻译：用于制造用于垂直记录的屏蔽极磁头的方法
公开(公告)号：US07337530B1
公开(公告)日：2008-03-04
申请号：US11699777
申请日：2007-01-30
申请人： Kroum S. Stoev , Francis H. Liu , Yugang Wang
发明人： Kroum S. Stoev , Francis H. Liu , Yugang Wang
IPC分类号： G11B5/147
CPC分类号： G11B5/313 , G11B5/1278 , G11B5/3116 , G11B2005/0029 , Y10T29/49032 , Y10T29/49041 , Y10T29/49046 , Y10T29/4905
摘要： A method of making a perpendicular magnetic recording head for use in a data storage device includes forming a first pole layer, a second pole layer, a third pole layer, and a shield layer of a write section. The first pole layer, second pole layer, third pole layer, and shield layer are formed without using a chemical mechanical polishing process. The method next includes concurrently trimming the shield layer and a write pole that is defined by the third pole layer to a predetermined track width. In the trimming step, the shield layer is used as a mask for the write pole.
摘要翻译：制造用于数据存储装置的垂直磁记录头的方法包括形成写入部分的第一极层，第二极层，第三极层和屏蔽层。在不使用化学机械抛光工艺的情况下形成第一极层，第二极层，第三极层和屏蔽层。该方法接下来包括同时修整屏蔽层和由第三极层限定到预定磁道宽度的写入极。在修整步骤中，屏蔽层用作写入极的掩模。

5. 发明授权

US07310204B1 Inductive writer design for using a soft magnetic pedestal having a high magnetic saturation layer 失效
标题翻译：使用具有高磁饱和层的软磁基座的感应写入器设计
公开(公告)号：US07310204B1
公开(公告)日：2007-12-18
申请号：US10741856
申请日：2003-12-19
申请人： Kroum S. Stoev , Francis H. Liu , Yugang Wang , Yingjian Chen
发明人： Kroum S. Stoev , Francis H. Liu , Yugang Wang , Yingjian Chen
IPC分类号： G11B5/187
CPC分类号： G11B5/1871 , G11B5/3116 , G11B5/3146 , G11B5/3967
摘要： A magnetic head for writing information on a relatively-moving medium has a pair of substantially flat soft magnetic pole layers separated by a pair of coil layers. A soft magnetic pedestal adjoins the leading pole layer adjacent to a medium-facing surface and is spaced from the second pole layer by a nanoscale nonferromagnetic gap, the pedestal having a layer of high magnetic saturation material that defines a throat height and extends beyond the throat height. A second high magnetic saturation material adjoins the trailing pole layer and either terminates at the throat height to form a second pedestal or extends to reach a magnetic backgap structure that magnetically couples the pole layers. The MR sensor can be located closer than the write transducer to the trailing end of the head to reduce separation between the read transducer and the write transducer.
摘要翻译：用于在相对移动的介质上写入信息的磁头具有由一对线圈层隔开的一对基本平坦的软磁极层。软磁性基座毗邻与中间面向表面相邻的引导极层，并且与第二极层间隔一纳米尺度的非铁磁隙，该基座具有一层高磁饱和度材料，其限定了喉部高度并延伸到喉部高度。第二高磁饱和材料邻接后极层并且终止于喉部高度以形成第二基座或延伸以到达磁耦合极层的磁性后隙结构。 MR传感器可以位于比写入传感器更靠近头部尾端的位置，以减少读取传感器与写入传感器之间的分离。

6. 发明授权

US07193815B1 Shielded pole magnetic head for perpendicular recording 有权
标题翻译：屏蔽极磁头用于垂直记录
公开(公告)号：US07193815B1
公开(公告)日：2007-03-20
申请号：US10819533
申请日：2004-04-06
申请人： Kroum S. Stoev , Francis H. Liu , Yugang Wang
发明人： Kroum S. Stoev , Francis H. Liu , Yugang Wang
IPC分类号： G11B5/147
CPC分类号： G11B5/313 , G11B5/1278 , G11B5/3116 , G11B2005/0029 , Y10T29/49032 , Y10T29/49041 , Y10T29/49046 , Y10T29/4905
摘要： A read/write head for use in a perpendicular magnetic recording head in a data storage system. The read/write head includes a write section that is comprised of a first pole layer, a second pole layer, a third pole layer, and a shield layer. The third pole layer defines a write pole tip, and the third pole layer and the shield layer are separated from each other to define a write gap therebetween. At least part of the shield layer has a generally uniform width, and wherein the write pole tip defines a track width that is substantially equal to the uniform width of the shield layer. According to one embodiment the entire shield layer has a generally uniform width that is substantially equal to the track width. According to another embodiment, the shield layer includes a lower section and an upper section, wherein the lower section has a generally uniform width along its entire length, and wherein the upper section is wider than the lower section.
摘要翻译：用于数据存储系统中的垂直磁记录头的读/写头。读/写头包括由第一极层，第二极层，第三极层和屏蔽层组成的写入部分。第三极层限定写极尖，并且第三极层和屏蔽层彼此分离以在它们之间限定写入间隙。屏蔽层的至少一部分具有大致均匀的宽度，并且其中写极端部限定基本上等于屏蔽层的均匀宽度的轨道宽度。根据一个实施例，整个屏蔽层具有基本上等于轨道宽度的大致均匀的宽度。根据另一实施例，屏蔽层包括下部和上部，其中下部沿其整个长度具有大致均匀的宽度，并且其中上部比下部宽。

7. 发明授权

US08310901B1 Method and system for providing separate write and optical modules 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单独写入和光学模块的方法和系统
公开(公告)号：US08310901B1
公开(公告)日：2012-11-13
申请号：US12796806
申请日：2010-06-09
申请人： Sharat Batra , Adam F. Torabi , Matthew R. Gibbons , Yugang Wang , Kroum S. Stoev
发明人： Sharat Batra , Adam F. Torabi , Matthew R. Gibbons , Yugang Wang , Kroum S. Stoev
IPC分类号： G11B11/00
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： An energy assisted magnetic recording (EAMR) transducer coupled with a laser is described. The EAMR transducer has an air-bearing surface (ABS) residing near a media during use. The EAMR transducer includes optical and writer modules. The optical module includes a waveguide and a near field transducer (NFT). The waveguide directs the energy from the laser toward the ABS. The NFT focuses the energy onto the media. The optical and writer modules are physically separate such that no portion of the waveguide is interleaved with a magnetic portion of the writer module. The writer module includes a write pole and coil(s). The write pole includes a pole-tip portion for providing a magnetic field to the media and a yoke. The pole-tip portion has an ABS-facing surface, a sloped surface, and a NFT-facing surface therebetween. The sloped surface is at least twenty-five and not more than sixty-five degrees from the NFT-facing surface.
摘要翻译：描述了与激光器耦合的能量辅助磁记录（EAMR）传感器。在使用过程中，EAMR传感器具有驻留在介质附近的空气轴承表面（ABS）。 EAMR传感器包括光学和写入器模块。光学模块包括波导和近场换能器（NFT）。波导将能量从激光器引向ABS。 NFT将能量集中在媒体上。光学和写入器模块是物理上分离的，使得波导的任何部分与写入器模块的磁性部分交错。写入器模块包括一个写入极和线圈。写极包括用于向介质和磁轭提供磁场的极尖部分。极尖部分具有面向ABS的表面，倾斜表面和它们之间的面向NFT的表面。倾斜表面距离面向NFT的表面至少二十五度且不超过六十五度。

8. 发明授权

US07443632B1 Magnetic head with stitched top pole layer and single layer coil or solenoidal coil 有权
标题翻译：磁头采用缝合顶极层和单层线圈或螺线管线圈
公开(公告)号：US07443632B1
公开(公告)日：2008-10-28
申请号：US11780110
申请日：2007-07-19
申请人： Kroum S. Stoev , Francis H. Liu , Yugang Wang
发明人： Kroum S. Stoev , Francis H. Liu , Yugang Wang
IPC分类号： G11B5/127 , G11B5/147
CPC分类号： G11B5/3116 , G11B5/17 , G11B5/3146
摘要： A magnetic head is disclosed that has first and second substantially flat soft magnetic pole layers that are magnetically coupled together in a backgap region that is removed from the medium-facing surface; a soft magnetic pedestal having a leading edge and a trailing edge, the trailing edge adjoining the second pole layer adjacent to the medium-facing surface, the leading edge defining a throat area that is spaced from the first pole layer by a submicron nonferromagnetic gap and defining an apex area that is spaced from the first pole layer by a greater separation than the gap, the throat area meeting the apex area at a throat height; and a plurality of substantially parallel, electrically conductive sections disposed between the first and second pole layers, the conductive sections disposed in a single layer that is aligned along a plane that intersects the pedestal and the backgap region.
摘要翻译：公开了一种磁头，其具有第一和第二基本上平坦的软磁极层，其在从介质面向表面移除的后隙区域中磁耦合在一起; 具有前缘和后缘的软磁性基座，所述后缘邻近所述第二极层与所述介质相对表面相邻，所述前缘限定与所述第一极层间隔开亚微米非铁磁间隙的喉部区域，以及限定与所述第一极层间隔开比所述间隙更大的间隔的顶点区域，所述喉部区域在喉部高度处满足所述顶点区域; 以及设置在所述第一和第二极层之间的多个基本上平行的导电部分，所述导电部分设置在沿着与所述基座和所述后隙区域相交的平面对齐的单个层中。

9. 发明授权

US07375926B1 Inductive writer design using a soft magnetic pedestal having a high magnetic saturation layer 有权
标题翻译：使用具有高磁饱和层的软磁基座的感应写入器设计
公开(公告)号：US07375926B1
公开(公告)日：2008-05-20
申请号：US11779785
申请日：2007-07-18
申请人： Kroum S. Stoev , Francis H. Liu , Yugang Wang , Yingjian Chen
发明人： Kroum S. Stoev , Francis H. Liu , Yugang Wang , Yingjian Chen
IPC分类号： G11B5/187
CPC分类号： G11B5/1871 , G11B5/3116 , G11B5/3146 , G11B5/3967
摘要： A magnetic head for writing information on a relatively-moving medium includes a first substantially flat soft magnetic pole layer and a second substantially flat pole layer with at least one coil layer between them. The pole layers are magnetically coupled in a core region and spaced by more than one micron from one other. A soft magnetic pedestal adjoins the first pole layer adjacent to a medium-facing surface of the head, and a first high magnetic saturation layer adjoins the pedestal. A second high magnetic saturation layer adjoins the second pole layer. The first high magnetic saturation layer has a first throat height and the second high magnetic saturation layer extends from the medium-facing surface only to a second throat height. The first and second throat heights are within about one and one-half microns from the medium-facing surface and are essentially equal.
摘要翻译：用于在相对移动的介质上写入信息的磁头包括第一基本平坦的软磁极层和在它们之间具有至少一个线圈层的第二基本平坦的极性层。磁极层磁芯耦合在磁芯区域并彼此间隔超过一微米。软磁座与第一磁极层相邻，与磁头的介质表面相邻，第一高磁饱和层邻接基座。第二高磁饱和层邻接第二极层。第一高磁饱和层具有第一喉部高度，而第二高磁饱和层从介质中的表面延伸到第二喉部高度。第一和第二喉部高度距离面向介质的表面大约一个半微米，并且基本相等。

10. 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。

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