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1.发明授权Magnetic recording disk drive with method for data preservation during high track misregistration (TMR) environment 有权磁记录磁盘驱动器，用于高跟踪配准（TMR）环境下的数据保存方法公开(公告)号：US08755142B2
公开(公告)日：2014-06-17
申请号：US13528794
申请日：2012-06-20
IPC分类号： G11B5/54
CPC分类号： G11B19/045 , G11B5/596
摘要： A hard disk drive (HDD) has a high track misregistration (TMR) mode of writing data. If the position error signal (PES) from the servo positioning information exceeds a first write inhibit threshold (WI-1), writing is not inhibited but a high TMR mode of operation is enabled. In high TMR mode, prior to writing data to the target track, the data on the adjacent tracks is read and stored in a buffer. The data to be written to the target track is also stored in the buffer, and is flagged to indicate that the data needs to be written. The data is then written to the target track. However, if during writing the PES exceeds a second threshold (WI-2), then the data from the adjacent encroached track in the buffer is flagged for writing and the process repeated with the encroached track set as the target track.
摘要翻译： 硬盘驱动器（HDD）具有写入数据的高轨迹重合失调（TMR）模式。 如果来自伺服定位信息的位置误差信号（PES）超过第一写入禁止阈值（WI-1），则不禁止写入，而是能够进行高TMR操作模式。 在高TMR模式中，在将数据写入目标轨迹之前，相邻轨道上的数据被读取并存储在缓冲器中。 要写入目标轨道的数据也存储在缓冲区中，并被标记以指示数据需要写入。 然后将数据写入目标轨道。 然而，如果在写入期间PES超过第二阈值（WI-2），则来自缓冲器中的相邻被侵入轨道的数据被标记为写入，并且以侵入的轨道设置为目标轨道重复该过程。
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2.发明授权Perpendicular magnetic recording system with helical write coil and auxiliary coil for fast switching of write pole magnetization 有权具有螺旋写入线圈和辅助线圈的垂直磁记录系统，用于快速切换写磁极磁化公开(公告)号：US08116031B2
公开(公告)日：2012-02-14
申请号：US12419278
申请日：2009-04-06
IPC分类号： G11B5/17
CPC分类号： G11B5/3123 , G11B5/1278 , G11B2005/001
摘要： A perpendicular magnetic recording system has a write head having a main helical coil (the write coil) and main pole (the write pole) that directs write flux in a direction perpendicular to the recording layer in the magnetic recording medium, and an auxiliary coil and auxiliary pole that injects magnetic flux into the write pole at an angle to the primary or perpendicular axis of the write pole. The auxiliary coil is preferably a helical coil wrapped around the auxiliary pole. The additional flux from the auxiliary pole, which is injected non-parallel to the primary magnetization of the write pole, exerts a relatively large torque on the magnetization of the write pole, thereby facilitating magnetization reversal of the write pole. Electrical circuitry is connected to the main coil and the auxiliary coil to generate the auxiliary flux simultaneous with the switching of the magnetization of the write pole.
摘要翻译： 垂直磁记录系统具有写磁头，该写头具有主磁螺旋线圈（写线圈）和主磁极（写磁极），其在与磁记录介质中的记录层垂直的方向上引导写磁通，辅助线圈和 辅助极以与写极的主轴或垂直轴成一定角度注入磁极。 辅助线圈优选为缠绕在辅助极上的螺旋线圈。 来自辅助极的不平行于写入磁极的一次磁化的附加磁通对写入磁极的磁化施加相对较大的转矩，从而促进写入极的磁化反转。 电路连接到主线圈和辅助线圈，以与写入极的磁化转换同时产生辅助通量。
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3.发明申请PERPENDICULAR MAGNETIC RECORDING SYSTEM WITH HELICAL WRITE COIL AND AUXILIARY COIL FOR FAST SWITCHING OF WRITE POLE MAGNETIZATION 有权具有螺旋线圈和辅助线圈的永磁磁记录系统，用于快速切换写入磁场公开(公告)号：US20100254041A1
公开(公告)日：2010-10-07
申请号：US12419278
申请日：2009-04-06
IPC分类号： G11B5/17
CPC分类号： G11B5/3123 , G11B5/1278 , G11B2005/001
摘要： A perpendicular magnetic recording system has a write head having a main helical coil (the write coil) and main pole (the write pole) that directs write flux in a direction perpendicular to the recording layer in the magnetic recording medium, and an auxiliary coil and auxiliary pole that injects magnetic flux into the write pole at an angle to the primary or perpendicular axis of the write pole. The auxiliary coil is preferably a helical coil wrapped around the auxiliary pole. The additional flux from the auxiliary pole, which is injected non-parallel to the primary magnetization of the write pole, exerts a relatively large torque on the magnetization of the write pole, thereby facilitating magnetization reversal of the write pole. Electrical circuitry is connected to the main coil and the auxiliary coil to generate the auxiliary flux simultaneous with the switching of the magnetization of the write pole.
摘要翻译： 垂直磁记录系统具有写磁头，该写头具有主磁螺旋线圈（写线圈）和主磁极（写磁极），其在与磁记录介质中的记录层垂直的方向上引导写磁通，辅助线圈和 辅助极以与写极的主轴或垂直轴成一定角度注入磁极。 辅助线圈优选为缠绕在辅助极上的螺旋线圈。 来自辅助极的不平行于写入磁极的一次磁化的附加磁通对写入磁极的磁化施加相对较大的转矩，从而促进写入极的磁化反转。 电路连接到主线圈和辅助线圈，以与写入极的磁化转换同时产生辅助通量。
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4.发明授权Magnetic recording media with antiferromagnetically coupled host layer for the magnetic recording layer 失效用于磁记录层的具有反铁磁耦合主机层的磁记录介质公开(公告)号：US06383668B1
公开(公告)日：2002-05-07
申请号：US09536868
申请日：2000-03-27
申请人： Eric Edward Fullerton , David Thomas Margulies , Ernesto Esteban Marinero , Manfred Ernst Schabes
发明人： Eric Edward Fullerton , David Thomas Margulies , Ernesto Esteban Marinero , Manfred Ernst Schabes
IPC分类号： G11B566
CPC分类号： G11B5/66 , Y10S428/90
摘要： A magnetic recording disk has a magnetic recording layer formed on a special multilayered “host” layer. The host layer is a “synthetic antiferromagnetically”, i.e., at least two ferromagnetic films that are exchange-coupled antiferromagnetically (AF) to one another across a nonferromagnetic spacer film so that their magnetic moments are oriented antiparallel. The magnetic recording layer has a different composition from the top ferromagnetic film in the host layer and is ferromagnetically coupled to the top ferromagnetic film of the host layer. The magnetic volume V of the composite structure (magnetic recording layer and host layer) that determines the thermal stability will be approximately the sum of the volumes of the grains in the magnetic recording layer and the AF-coupled ferromagnetic films of the host layer. However, the magnetic moment of the composite structure is primarily just the moment from the magnetic recording layer because the host layer is designed to have essentially no net magnetic moment.
摘要翻译： 磁记录盘具有形成在特殊多层“主体”层上的磁记录层。 主体层是“合成的反铁磁性”，即至少两个铁磁膜，其通过非铁磁隔离膜彼此交互耦合反铁磁（AF），使得它们的磁矩反向取向。 磁记录层与主体层中的顶部铁磁膜具有不同的组成，并与主体层的顶部铁磁膜铁磁耦合。 确定热稳定性的复合结构（磁记录层和主体层）的磁体积V将近似为磁记录层中的晶粒的体积和主体层的AF耦合铁磁性膜之和。 然而，复合结构的磁矩主要仅在磁记录层的时刻，因为主体层被设计成基本上没有净磁矩。
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5.发明授权Patterned perpendicular magnetic recording disk drive and medium with patterned exchange bridge layer below the data islands 有权图案化的垂直磁记录磁盘驱动器和介质，在数据岛下方有图案交换桥接层公开(公告)号：US08541116B2
公开(公告)日：2013-09-24
申请号：US12906909
申请日：2010-10-18
申请人： Olav Hellwig , Dan Saylor Kercher , Ernesto E. Marinero , Manfred Ernst Schabes , Dieter K. Weller , Gabriel Zeltzer
发明人： Olav Hellwig , Dan Saylor Kercher , Ernesto E. Marinero , Manfred Ernst Schabes , Dieter K. Weller , Gabriel Zeltzer
IPC分类号： G11B5/66
CPC分类号： G11B5/855 , G11B5/746 , G11B2005/0021
摘要： A patterned perpendicular magnetic recording disk with discrete data islands of recording layer (RL) material includes a substrate, a patterned exchange bridge layer of magnetic material between the substrate and the islands, and an optional exchange-coupling control layer (CCL) between the exchange bridge layer and the islands. The exchange bridge layer has patterned pedestals below the islands. The exchange bridge layer controls exchange interactions between the RLs in adjacent islands to compensate the dipolar fields between islands, and the pedestals concentrate the flux from the write head. The disk may include a soft underlayer (SUL) of soft magnetically permeable material on the substrate and a nonmagnetic exchange break layer (EBL) on the SUL between the SUL and the exchange bridge layer. In a thermally-assisted recording (TAR) disk a heat sink layer may be located below the exchange bridge layer and the SUL may be optional.
摘要翻译： 具有记录层（RL）材料的离散数据岛的图案化垂直磁记录盘包括衬底，在衬底和岛之间的图案化的磁性材料交换桥接层，以及在交换器之间的任选的交换耦合控制层（CCL） 桥梁层和岛屿。 交换桥层在岛屿下方有图案化的基座。 交换桥接层控制相邻岛中的RL之间的交换相互作用以补偿岛之间的偶极场，并且基座集中来自写头的磁通。 盘可以包括在衬底上的软磁性可渗透材料的软底层（SUL）和在SUL和交换桥接层之间的SUL上的非磁性交换断层（EBL）。 在热辅助记录（TAR）盘中，散热层可以位于交换桥接层下方，并且SUL可以是可选的。
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6.发明授权Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor with reference layer integrated in magnetic shield 有权电流垂直于平面（CPP）磁阻（MR）传感器，其参考层集成在磁屏蔽中公开(公告)号：US08514525B2
公开(公告)日：2013-08-20
申请号：US12881162
申请日：2010-09-13
CPC分类号： G01R33/093 , B82Y10/00 , B82Y25/00 , G11B5/3912 , G11B5/3932 , G11B2005/3996
摘要： A current-perpendicular-to-the-plane magnetoresistive (CPP MR) sensor has a shield layers that also functions as the sensor's reference layer. In a CPP MR disk drive read head, the shield layer has a fixed magnetization oriented substantially parallel to the air-bearing surface (ABS) of the slider that supports the read head. The quiescent magnetization of the sensor free layer is oriented at an angle relative to the magnetization of the shield layer, preferably between 120 and 150 degrees, to optimize the sensor response to magnetic fields from the recorded data bits on the disk. The magnetization of the free layer is biased by a biasing structure that includes a ferromagnetic side biasing layer formed near the side edges of the free layer and a ferromagnetic back biasing layer that is recessed from the ABS and has a magnetization oriented generally orthogonal to the ABS.
摘要翻译： 电流垂直于平面的磁阻（CPP MR）传感器具有也用作传感器参考层的屏蔽层。 在CPP MR磁盘驱动器读取头中，屏蔽层具有固定的磁化取向，该固定磁化基本上平行于支撑读取磁头的滑块的空气轴承表面（ABS）。 传感器自由层的静态磁化相对于屏蔽层的磁化方向成一定角度，优选地在120和150度之间，以优化传感器对磁盘上记录数据位的响应。 自由层的磁化由偏置结构偏置，该偏置结构包括形成在自由层的侧边缘附近的铁磁侧偏置层和从ABS凹陷的铁磁反向偏置层，并且具有大致正交于ABS的磁化 。
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7.发明授权Perpendicular magnetic recording write head with spin torque oscillator for fast switching of write pole magnetization 有权垂直磁记录写头具有自旋转矩振荡器，可快速切换写磁极磁化公开(公告)号：US08446690B2
公开(公告)日：2013-05-21
申请号：US12542677
申请日：2009-08-17
IPC分类号： G11B5/17
CPC分类号： G11B5/314 , G11B5/02 , G11B5/1278 , G11B5/3146 , G11B2005/0005
摘要： A perpendicular magnetic recording write head that a write pole, an electrically conductive coil coupled to the write pole for generating magnetic flux in the write pole in the presence of electrical write current, and a spin torque oscillator (STO) that injects auxiliary magnetic flux to the write pole in a direction generally orthogonal to the write pole to facilitate magnetization switching of the write pole. The STO comprises a stack of layers including electrodes, a pinned ferromagnetic layer having a fixed, a free ferromagnetic layer having a magnetization free to rotate, and a nonmagnetic spacer layer between the pinned and free layers. The free layer may be oriented either substantially orthogonal to the write pole or substantially parallel to the write pole, in which latter embodiment a flux guide may be located between the free layer and the write pole for directing the auxiliary magnetic flux from the free layer to the write pole.
摘要翻译： 垂直磁记录写头具有写极，耦合到写极的导电线圈，用于在存在写写电流的情况下在写极中产生磁通;以及自旋扭矩振荡器（STO），其将辅助磁通量注入到 写磁极在与写磁极大致垂直的方向上，以方便写磁极的磁化切换。 STO包括一叠层，包括电极，具有固定磁化的钉扎铁磁层，具有自由旋转的磁化的自由铁磁层和在被钉扎层和自由层之间的非磁性间隔层。 自由层可以取向为大致正交于写极或基本上平行于写极，其中后一实施例中的磁通引导件可以位于自由层和写极之间，用于将辅助磁通从自由层引导到 写柱。
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8.发明授权Single pole tip write head design for perpendicular recording media having reduced dependence on soft underlayers 有权用于垂直记录介质的单极端头写入头设计，对软底层的依赖性降低公开(公告)号：US08179635B2
公开(公告)日：2012-05-15
申请号：US12011654
申请日：2008-01-28
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/3146
摘要： A thin film, perpendicular write head for use with recording media with or without a soft under layer is disclosed. The present invention comprises an tapered auxiliary pole, situated below the main write pole and separated from the write pole by a lower non-magnetic gap. The auxiliary pole alleviates problems such as erasure after write, and cross track stray erasure fields, associated with operating conventionally designed perpendicular writes heads with media having no soft under layer.
摘要翻译： 公开了一种用于具有或不具有软底层的记录介质的薄膜垂直写头。 本发明包括一个锥形辅助极，位于主写柱的下方，并通过较低的非磁隙与写极分开。 辅助极减轻了写入之后的擦除和与不具有软底层的介质操作常规设计的垂直写头相关联的交叉轨道杂散区的问题。
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9.发明申请PATTERNED PERPENDICULAR MAGNETIC RECORDING DISK DRIVE AND MEDIUM WITH PATTERNED EXCHANGE BRIDGE LAYER BELOW THE DATA ISLANDS 有权图形数字岛上的图形交换电路板图形磁记录磁盘驱动器和介质公开(公告)号：US20120092790A1
公开(公告)日：2012-04-19
申请号：US12906909
申请日：2010-10-18
申请人： Olav Hellwig , Dan Saylor Kercher , Ernesto E. Marinero , Manfred Ernst Schabes , Dieter K. Weller , Gabriel Zeltzer
发明人： Olav Hellwig , Dan Saylor Kercher , Ernesto E. Marinero , Manfred Ernst Schabes , Dieter K. Weller , Gabriel Zeltzer
CPC分类号： G11B5/855 , G11B5/746 , G11B2005/0021
摘要： A patterned perpendicular magnetic recording disk with discrete data islands of recording layer (RL) material includes a substrate, a patterned exchange bridge layer of magnetic material between the substrate and the islands, and an optional exchange-coupling control layer (CCL) between the exchange bridge layer and the islands. The exchange bridge layer has patterned pedestals below the islands. The exchange bridge layer controls exchange interactions between the RLs in adjacent islands to compensate the dipolar fields between islands, and the pedestals concentrate the flux from the write head. The disk may include a soft underlayer (SUL) of soft magnetically permeable material on the substrate and a nonmagnetic exchange break layer (EBL) on the SUL between the SUL and the exchange bridge layer. In a thermally-assisted recording (TAR) disk a heat sink layer may be located below the exchange bridge layer and the SUL may be optional.
摘要翻译： 具有记录层（RL）材料的离散数据岛的图案化垂直磁记录盘包括衬底，在衬底和岛之间的图案化的磁性材料交换桥接层，以及在交换器之间的任选的交换耦合控制层（CCL） 桥梁层和岛屿。 交换桥层在岛屿下方有图案化的基座。 交换桥接层控制相邻岛中的RL之间的交换相互作用以补偿岛之间的偶极场，并且基座集中来自写头的磁通。 盘可以包括在衬底上的软磁性可渗透材料的软底层（SUL）和在SUL和交换桥接层之间的SUL上的非磁性交换断层（EBL）。 在热辅助记录（TAR）盘中，散热层可以位于交换桥接层下方，并且SUL可以是可选的。
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10.发明申请PERPENDICULAR MAGNETIC RECORDING WRITE HEAD WITH SPIN TORQUE OSCILLATOR FOR FAST SWITCHING OF WRITE POLE MAGNETIZATION 有权具有旋转扭矩振荡器的磁性记录磁头，用于快速切换写入磁场公开(公告)号：US20110038080A1
公开(公告)日：2011-02-17
申请号：US12542677
申请日：2009-08-17
CPC分类号： G11B5/314 , G11B5/02 , G11B5/1278 , G11B5/3146 , G11B2005/0005
摘要： A perpendicular magnetic recording write head that a write pole, an electrically conductive coil coupled to the write pole for generating magnetic flux in the write pole in the presence of electrical write current, and a spin torque oscillator (STO) that injects auxiliary magnetic flux to the write pole in a direction generally orthogonal to the write pole to facilitate magnetization switching of the write pole. The STO comprises a stack of layers including electrodes, a pinned ferromagnetic layer having a fixed, a free ferromagnetic layer having a magnetization free to rotate, and a nonmagnetic spacer layer between the pinned and free layers. The free layer may be oriented either substantially orthogonal to the write pole or substantially parallel to the write pole, in which latter embodiment a flux guide may be located between the free layer and the write pole for directing the auxiliary magnetic flux from the free layer to the write pole.
摘要翻译： 垂直磁记录写头具有写极，耦合到写极的导电线圈，用于在存在写写电流的情况下在写极中产生磁通;以及自旋扭矩振荡器（STO），其将辅助磁通量注入到 写磁极在与写磁极大致垂直的方向上，以方便写磁极的磁化切换。 STO包括一叠层，包括电极，具有固定磁化的钉扎铁磁层，具有自由旋转的磁化的自由铁磁层和在被钉扎层和自由层之间的非磁性间隔层。 自由层可以取向为大致正交于写极或基本上平行于写极，其中后一实施例中的磁通引导件可以位于自由层和写极之间，用于将辅助磁通从自由层引导到 写柱。
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