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11. 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。

12. 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。

13. 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。

14. 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。

15. 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。

16. 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。

17. 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。

18. 发明授权

US07292409B1 Magnetic head with thin trailing pedestal layer 失效
标题翻译：磁头与薄拖尾基座层
公开(公告)号：US07292409B1
公开(公告)日：2007-11-06
申请号：US10788766
申请日：2004-02-27
申请人： Kroum S. Stoev , Francis H. Liu , James H. Wang , Marcos M. Lederman , David J. Seagle
发明人： Kroum S. Stoev , Francis H. Liu , James H. Wang , Marcos M. Lederman , David J. Seagle
IPC分类号： G11B5/147 , G11B5/17 , G11B5/187
CPC分类号： G11B5/3146 , G11B5/17 , G11B5/3116 , G11B5/3123
摘要： A magnetic head for a disk drive is disclosed that has a first soft magnetic pole layer disposed in the head adjacent to a medium-facing surface and extending perpendicular to the medium-facing surface; a second soft magnetic pole layer disposed closer than the first pole layer to the trailing end, the second pole layer magnetically coupled to the first pole layer in a backgap region; a soft magnetic pedestal adjoining the second pole layer, disposed closer than the second pole layer to the medium-facing surface and extending less than the second pole layer extends from the medium-facing surface, the pedestal separated from the first pole layer by a nonferromagnetic gap, the pedestal having a thickness that is less than four hundred and fifty nanometers between the gap and the second pole layer. Longitudinal and perpendicular recording embodiments are disclosed, as well as solenoidal, single-layer and dual-layer reversed-current coil structures.
摘要翻译：公开了一种用于磁盘驱动器的磁头，其具有第一软磁极层，该第一软磁极层设置在与中间面向表面相邻并且垂直于介质面向表面延伸的头部中; 第二软磁极层，设置成比所述第一极层更靠近所述后端，所述第二极层在后隙区域中磁耦合到所述第一极层; 邻近第二极层的软磁性基座设置成比第二极层更靠近介质相对表面并且延伸小于第二极层从中介面向表面延伸，基座与第一极层分离，由非铁磁间隙，所述基座在所述间隙和所述第二极层之间具有小于四百五十纳米的厚度。公开纵向和垂直记录实施例，以及螺线管，单层和双层反向电流线圈结构。

19. 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。

20. 发明授权

US07729086B1 Perpendicular magnetic recording head with dynamic flying height heating element disposed below turns of a write coil 有权
标题翻译：具有动态飞行高度加热元件的垂直磁记录头位于写入线圈的下方
公开(公告)号：US07729086B1
公开(公告)日：2010-06-01
申请号：US12197612
申请日：2008-08-25
申请人： Suping Song , Kroum S. Stoev
发明人： Suping Song , Kroum S. Stoev
IPC分类号： G11B5/147 , G11B5/56
CPC分类号： G11B5/3133 , G11B5/1278 , G11B5/3967 , G11B5/6064 , G11B5/607
摘要： A magnetic head for perpendicular magnetic recording includes a slider having an air bearing surface (ABS) and a trailing surface and a transducer fabricated on the trailing surface. The transducer includes a magnetoresistive (MR) read element disposed within a gap material bounded by shield material, an adjunct pole, and a main pole formed in an adjacent layered relationship to the adjunct pole. The adjunct pole has a front edge that is recessed from the ABS and a rear edge. The main pole has a write tip that extends approximately to the ABS. The transducer further includes a write coil having a first layer of turns below the adjunct pole and above the shield material. The magnetic head also includes a heating element with a portion of the heating element below the write coil and behind the rear edge of the adjunct pole.
摘要翻译：用于垂直磁记录的磁头包括具有空气轴承表面（ABS）和后表面的滑块以及在后表面上制造的换能器。换能器包括设置在由屏蔽材料界定的间隙材料内的磁阻（MR）读取元件，辅助极和与附加极相邻的层叠关系形成的主极。辅助杆具有从ABS凹下的前边缘和后边缘。主杆具有大致延伸到ABS的写入尖端。换能器还包括写入线圈，该线圈具有在辅助极下方的第一层匝并且在屏蔽材料之上。磁头还包括加热元件，其中加热元件的一部分在写入线圈下方并在辅助极的后边缘之后。

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