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1. 发明授权

US07522379B1 Write element with recessed pole and heat sink layer for ultra-high density writing 有权
标题翻译：写入元件具有凹陷极和散热层，用于超高密度写入
公开(公告)号：US07522379B1
公开(公告)日：2009-04-21
申请号：US10909226
申请日：2004-07-30
申请人： Mohamad T. Krounbi , Yining Hu , Ming Zhao , Kenneth Kung , Mark D. Thomas , Kroum S. Stoev , Francis H. Liu , Marcos M. Lederman
发明人： Mohamad T. Krounbi , Yining Hu , Ming Zhao , Kenneth Kung , Mark D. Thomas , Kroum S. Stoev , Francis H. Liu , Marcos M. Lederman
IPC分类号： G11B5/147
CPC分类号： G11B5/3133
摘要： A head including a write element for writing data to a magnetic media, and methods for its production are provided. A write element of the invention includes one or more of a recessed first pole, a heat sink layer, and a shortened yoke length. A method of the invention provides forming an anti-reflective layer before forming a mask layer. During photolithography the anti-reflective layer suppresses undesirable reflections off of features, such as vertical sidewalls, that otherwise limit how closely to such features portions of the mask layer can be formed.
摘要翻译：提供一种包括用于向磁性介质写入数据的写入元件的头，以及用于其生产的方法。本发明的写入元件包括凹入的第一极，散热层和缩短的磁轭长度中的一个或多个。本发明的方法提供了在形成掩模层之前形成抗反射层。在光刻期间，抗反射层抑制了诸如垂直侧壁的特征（例如垂直侧壁）的不期望的反射，否则可以限制与这些特征的接近程度，可以形成掩模层的部分。

2. 发明授权

US07283327B1 Magnetic write head having resistive heater coil 失效
标题翻译：具有电阻加热线圈的磁写头
公开(公告)号：US07283327B1
公开(公告)日：2007-10-16
申请号：US11451770
申请日：2006-06-13
申请人： Francis H. Liu , Kroum S. Stoev , Mohamad T. Krounbi
发明人： Francis H. Liu , Kroum S. Stoev , Mohamad T. Krounbi
IPC分类号： G11B5/17 , G11B5/56 , G11B21/02
CPC分类号： G11B5/60 , G11B5/6064
摘要： A magnetic write head includes a magnetic yoke having a first pole and a second pole. The first pole and the second pole each terminate at an air bearing surface. The first pole is magnetically coupled to the second pole in a backgap region. The magnetic write head further includes a electrically conductive write coil magnetically coupled to the magnetic yoke. The magnetic write head further includes a resistive heater coil having a first coil turn and a second coil turn. The heater coil is electrically isolated from the write coil. At least a portion of the first coil turn is between the first pole and the second pole and between the air bearing surface and the backgap region. At least a portion of the second coil turn is between the first pole and the second pole and between the air bearing surface and the backgap region. The portion of the first coil turn overlaps the portion of the second coil turn.
摘要翻译：磁写头包括具有第一极和第二极的磁轭。第一极和第二极各自终止于空气轴承表面。第一极在后隙区域磁耦合到第二极。磁写头还包括磁耦合到磁轭的导电写入线圈。磁写头还包括具有第一线圈匝和第二线圈匝的电阻加热器线圈。加热器线圈与写入线圈电隔离。第一线圈匝的至少一部分在第一极和第二极之间以及空气支承表面和后隙区之间。第二线圈匝的至少一部分在第一极和第二极之间以及空气支承表面和后隙区之间。第一线圈圈的部分与第二线圈匝的部分重叠。

3. 发明授权

US07092195B1 Method of using a magnetic write head having an internal heater 有权
标题翻译：使用具有内部加热器的磁性写入头的方法
公开(公告)号：US07092195B1
公开(公告)日：2006-08-15
申请号：US10856403
申请日：2004-05-28
申请人： Francis H. Liu , Kroum S. Stoev , Mohamad T. Krounbi
发明人： Francis H. Liu , Kroum S. Stoev , Mohamad T. Krounbi
IPC分类号： G11B21/02
CPC分类号： G11B5/60 , G11B5/6064
摘要： A method adjusts a flying-height distance between a magnetic write head and a magnetic medium. The method includes positioning the write head in a location spaced from the magnetic medium by the flying-height distance. The write head includes a magnetic yoke and a proximal region in proximity to the magnetic medium. The write head further includes a resistive heater and at least a portion of the resistive heater is within the magnetic yoke and is in proximity to the proximal region. The resistive heater is configured to heat the proximal region. The proximal region has a coefficient of thermal expansion. The proximal region is configured to expand and to contract in response to a temperature of the proximal region. The method further includes flowing an electric current through the resistive heater. The method further includes controlling the electric current to adjust the temperature of the proximal region to selectively expand and contract the proximal region and thereby control the flying-height distance. Controlling the electric current includes pulsing the electrical current and adjusting a time interval between pulses.
摘要翻译：一种方法调节磁写头和磁介质之间的飞行高度距离。该方法包括将写入头定位在与磁介质隔开飞行高度距离的位置。写磁头包括磁轭和靠近磁介质的近侧区域。写头还包括电阻加热器，并且电阻加热器的至少一部分在磁轭内并且靠近近端区域。电阻加热器被配置为加热近端区域。近端区域具有热膨胀系数。近端区域被配置为响应于近端区域的温度膨胀和收缩。该方法还包括使电流流过电阻加热器。该方法还包括控制电流以调节近端区域的温度以选择性地扩展和收缩近端区域，从而控制飞行高度距离。控制电流包括脉冲电流和调节脉冲之间的时间间隔。

4. 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。

5. 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。

6. 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。

7. 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。

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

US07212384B1 Magnetic read head with recessed hard bias and current leads 有权
标题翻译：具有凹陷硬偏置和电流引线的磁读头
公开(公告)号：US07212384B1
公开(公告)日：2007-05-01
申请号：US10788653
申请日：2004-02-27
申请人： Kroum S. Stoev , Amritpal S. Rana , Francis H. Liu
发明人： Kroum S. Stoev , Amritpal S. Rana , Francis H. Liu
IPC分类号： G11B5/39
CPC分类号： G11B5/3932
摘要： A read element includes a magnetoresistive sensor having a side and an upper surface that defines an edge. An underlayer overlies the side of the magnetoresistive sensor, and a hard bias layer overlies at least part of the underlayer and defines a hard bias junction with the underlayer. A lead is formed atop the hard bias layer. The hard bias junction is recessed from the edge of the magnetoresistive sensor by a predetermined recess distance, to provide stability and sensitivity to the read element.
摘要翻译：读取元件包括具有限定边缘的侧面和上表面的磁阻传感器。底层覆盖在磁阻传感器的侧面，并且硬偏压层覆盖在底层的至少一部分上并且限定与底层的硬偏压连接。在硬偏压层顶部形成引线。硬偏压接合部从磁阻传感器的边缘凹入预定的凹陷距离，以向读取元件提供稳定性和灵敏度。

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