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51. 发明授权

US08451567B2 High resolution magnetic read head using top exchange biasing and/or lateral hand biasing of the free layer 有权
标题翻译：高分辨率磁读头使用自由层的顶部交换偏置和/或侧向手偏置
公开(公告)号：US08451567B2
公开(公告)日：2013-05-28
申请号：US12928473
申请日：2010-12-13
申请人： Yuchen Zhou , Wenyu Chen , Joe Smyth
发明人： Yuchen Zhou , Wenyu Chen , Joe Smyth
IPC分类号： G11B5/39
CPC分类号： G11B5/3932 , G01R33/098 , G11B5/3909 , G11B2005/3996 , Y10T29/49044 , Y10T29/49048
摘要： A CPP (Current Perpendicular to Plane) MR (Magnetoresistive) read head and its method of fabrication includes a patterned CPP MR sensor stack having a SAF (Synthetic Antiferromagnetic) free layer structure that is longitudinally biased by the combination of an exchange biasing layer formed over the sensor stack and hard biasing layers that are formed adjacent to the patterned sides of the stack. The combination provides the stack with high resolution reading capabilities without the necessity for a narrow read gap formed by closely spaced top and bottom shields. Sixteen embodiments are described that provide different versions of the exchange biasing layer, different positions of the hard biasing layers and different patternings of the CPP MR sensor stack.
摘要翻译： CPP（电流垂直于平面）MR（磁阻）读取头及其制造方法包括具有SAF（合成反铁磁性）自由层结构的图案化CPP MR传感器堆叠，其通过在其上形成的交换偏置层的组合而被纵向偏置传感器堆叠和与堆叠的图案化侧面相邻形成的硬偏置层。该组合提供了具有高分辨率读取能力的堆叠，而不需要由紧密间隔的顶部和底部屏蔽形成的窄读取间隙。描述了提供交换偏置层的不同版本，硬偏压层的不同位置和CPP MR传感器堆叠的不同图案的十六个实施例。

52. 发明授权

US08416649B2 Main pole design for thermally assisted magnetic recording 有权
标题翻译：用于热辅助磁记录的主极设计
公开(公告)号：US08416649B2
公开(公告)日：2013-04-09
申请号：US12800194
申请日：2010-05-11
申请人： Kenichi Takano , Joe Smyth , Erhard Schreck
发明人： Kenichi Takano , Joe Smyth , Erhard Schreck
IPC分类号： G11B11/00
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/314 , G11B2005/0021
摘要： Improved spatial resolution during TAMR has been achieved by shaping the write pole to have a lower surface that slopes away from the surface of the recording medium, starting at, or near, the pole's leading edge. The approach may be used for simple or compound (stitched) poles.
摘要翻译：通过使写入极通过成形使具有从磁极的前缘开始或接近磁极的边缘的表面离开记录介质的表面的下表面来实现TAMR期间的改进的空间分辨率。该方法可用于简单或复合（缝合）极。

53. 发明授权

US08238202B2 Directional waveguide coupler for ABS reflected light 有权
标题翻译： ABS反射光的定向波导耦合器
公开(公告)号：US08238202B2
公开(公告)日：2012-08-07
申请号：US12928678
申请日：2010-12-16
申请人： Erhard Schreck , Tobias Maletzky , Xuhui Jin , Yuchen Zhou , Kenichi Takano , Joe Smyth
发明人： Erhard Schreck , Tobias Maletzky , Xuhui Jin , Yuchen Zhou , Kenichi Takano , Joe Smyth
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , B82Y20/00 , G02B6/1226 , G02B6/125 , G02B6/2821 , G11B5/3189 , G11B2005/001 , G11B2005/0021
摘要： A waveguide structure for a TAMR head is disclosed wherein at least one detection waveguide is formed parallel to a main waveguide and located a gap distance therefrom. A light source transmits light into the main waveguide and towards an ABS/medium interface. A plasmon generator converts light from the waveguide into plasmon waves that are directed onto a magnetic medium. Back reflected light is captured by the main waveguide, partially diverted into a detection waveguide, and transmitted to a photo detector that measures light intensity (IB) which correlates closely to the plasmon wave intensity at the ABS/medium interface. A controller linked to the photo detector is employed to calculate IB as a function of ABS/medium spacing in a non-write condition and this relationship can be used to control and maintain a constant plasmon wave intensity at the ABS during a series of TAMR write processes with a plurality of media.
摘要翻译：公开了一种用于TAMR头的波导结构，其中至少一个检测波导与主波导平行地形成并且与其间的间隙距离。光源将光传输到主波导并朝向ABS /介质接口。等离子体激元发生器将来自波导的光转换成被引导到磁介质上的等离子体波。后反射光被主波导捕获，部分转移到检测波导中，并传输到光检测器，该光检测器测量与ABS /介质界面处的等离子体波强度密切相关的光强度（IB）。在非写入条件下，使用与光电检测器相关联的控制器来计算IB作为ABS /介质间隔的函数，并且该关系可用于在一系列TAMR写入期间控制和维持ABS处的恒定等离子体波强度具有多个媒体的过程。

54. 发明授权

US08036069B1 Plasmon shield to shape and reduce optical spot 有权
标题翻译：等离子体屏蔽形状并减少光斑
公开(公告)号：US08036069B1
公开(公告)日：2011-10-11
申请号：US12802096
申请日：2010-05-28
申请人： Xuhui Jin , Yuchen Zhou , Joe Smyth , Tobias Maletzky , Kenichi Takano , Erhard Schreck
发明人： Xuhui Jin , Yuchen Zhou , Joe Smyth , Tobias Maletzky , Kenichi Takano , Erhard Schreck
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G02B6/107 , G11B2005/0021
摘要： A TAMR head is disclosed with a triangular shaped plasmon antenna covered on two sides with a plasmon layer that generates an edge plasmon mode along a vertex of the two plasmon sides formed opposite a main pole layer. A plasmon shield (PS) is formed along the ABS and opposite the vertex to confine an electric field from the edge plasmon mode within a small radius of the edge plasmon tip thereby reducing the optical spot size on the magnetic medium and enhancing writability. An end of a waveguide used to direct input electromagnetic radiation to the plasmon antenna adjoins a PS side opposite the ABS. In one embodiment, a magnetic shield may be formed along the ABS and adjoins the PS so that a first PS section terminates at the ABS and faces the vertex while a second PS section is formed between the magnetic shield and waveguide end.
摘要翻译：公开了具有三面形等离子体激元的三角形等离子体激元天线，该三角形等离子体激元天线用等离子体膜覆盖，该等离子体膜沿着与主极层相对的两个等离子体激元侧的顶点产生边缘等离子体模式。等离子体屏蔽（PS）沿着ABS形成并与顶点相对，以将边缘等离子体激元模式的电场限制在边缘等离子体激元尖端的小半径内，从而减小磁介质上的光点尺寸并提高可写性。用于将输入电磁辐射引导到等离子体激元天线的波导的一端与ABS相对的PS侧相邻。在一个实施例中，可以沿着ABS形成磁屏蔽并与PS邻接，使得第一PS部分在ABS处终止并面向顶点，而在磁屏蔽和波导端之间形成第二PS部分。

55. 发明授权

US08881378B2 Method to improve performance of a magneto-resistive (MR) sensor 有权
标题翻译：提高磁阻（MR）传感器性能的方法
公开(公告)号：US08881378B2
公开(公告)日：2014-11-11
申请号：US13199183
申请日：2011-08-22
申请人： Yuchen Zhou , Joe Smyth , Min Li , Glen Garfunkel
发明人： Yuchen Zhou , Joe Smyth , Min Li , Glen Garfunkel
IPC分类号： G11B5/127 , H04R31/00 , G01R33/09 , B32B38/10 , B32B37/02
CPC分类号： G01R33/098 , B32B37/02 , B32B38/10 , B32B2307/212 , B32B2309/105 , B32B2457/08 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： A method is described to improve performance of a magneto-resistive (MR) sensor under conditions of high areal density. The free layer is partially etched away, the removed material being replaced by a magnetic flux guide structure that reduces the free layer's demagnetization field. This in turn reduces the stripe height of the sensor so that the resolution and the read-back signal are enhanced without increasing noise and instability.
摘要翻译：描述了一种在高密度密度条件下提高磁阻（MR）传感器性能的方法。自由层被部分地蚀刻掉，去除的材料被减少自由层去磁场的磁通引导结构代替。这又降低了传感器的条带高度，从而增强了分辨率和回读信号，而不增加噪声和不稳定性。

56. 发明授权

US08621261B2 Support for virtualized unified communications clients when host server connectivity is lost 有权
标题翻译：当主机服务器连接丢失时，支持虚拟化统一通信客户端
公开(公告)号：US08621261B2
公开(公告)日：2013-12-31
申请号：US12953706
申请日：2010-11-24
申请人： Randall Bernard Baird , J. Steven Mayer , Joe Smyth
发明人： Randall Bernard Baird , J. Steven Mayer , Joe Smyth
IPC分类号： G06F11/00
CPC分类号： G06F11/2012 , G06F11/1479 , H04L67/08
摘要： Techniques are provided for establishing a Virtual Desktop Interface (VDI) connection at a virtual desktop thin client (VDTC) device, between a VDI client in the VDTC device and a VDI server in a hosted virtual desktop server (HVDS). A unified communications (UC) control connection is established between a UC protocol stack on the VDTC device and a primary call agent, where the UC control connection is configured to allow the UC protocol stack to register with the primary call agent, and to send or receive commands from the primary call agent that are based on signals from a UC control application running on the HVDS. A UC control backup application is started on the virtual desktop thin client device in a standby mode that is configured to switch to an active mode in response to a failure to establish or maintain the UC control connection, or a failure to establish or maintain the VDI connection. A user interface is launched on the virtual desktop thin client device that is configured to perform UC backup functions.
摘要翻译：提供了在虚拟桌面瘦客户机（VDTC）设备，VDTC设备中的VDI客户端和托管虚拟桌面服务器（HVDS）中的VDI服务器之间建立虚拟桌面接口（VDI）连接的技术。在VDTC设备上的UC协议栈和主呼叫代理之间建立统一通信（UC）控制连接，其中UC控制连接被配置为允许UC协议栈向主呼叫代理注册，并且发送或接收来自主呼叫代理的基于来自在HVDS上运行的UC控制应用的信号的命令。在虚拟桌面瘦客户端设备上启动UC控制备份应用程序，该备用模式被配置为响应于建立或维护UC控制连接的故障而切换到活动模式，或者未能建立或维护VDI 连接。在配置为执行UC备份功能的虚拟桌面瘦客户端设备上启动用户界面。

57. 发明授权

US08369189B2 Heat assisted narrow pole design with trailing shield 有权
标题翻译：热辅助窄杆设计与后盾
公开(公告)号：US08369189B2
公开(公告)日：2013-02-05
申请号：US13066420
申请日：2011-04-14
申请人： Xuhui Jin , Yuchen Zhou , Kenichi Takano , Joe Smyth
发明人： Xuhui Jin , Yuchen Zhou , Kenichi Takano , Joe Smyth
IPC分类号： G11B11/00
CPC分类号： G11B5/84 , B82Y10/00 , G11B5/3116 , G11B5/314 , G11B2005/0021
摘要： A TAMR (Thermal Assisted Magnetic Recording) writer has a narrow pole tip with a trailing edge magnetic shield. The narrow pole tipped write head uses the energy of laser generated edge plasmons, formed in a plasmon generating layer, to locally heat a PMR magnetic recording medium below its Curie temperature, Tc. When combined with the effects of the narrow tip, this local heating to a temperature below Tc is sufficient to create good transitions and narrow track widths in the magnetic medium. The write head is capable of writing effectively on state-of-the-art PMR recording media having Hk of 20 kOe or more.
摘要翻译： TAMR（热辅助磁记录）写入器具有带有后缘磁屏蔽的窄极端。窄极尖写头使用在等离子体发生层中形成的激光产生的边缘等离子体激元的能量来局部加热低于其居里温度Tc的PMR磁记录介质。当与窄尖端的作用相结合时，这种局部加热到低于Tc的温度足以在磁性介质中产生良好的转变和窄的轨道宽度。写头能够有效地写入具有20kOe以上Hk的最先进的PMR记录介质。

58. 发明授权

US08203389B1 Field tunable spin torque oscillator for RF signal generation 有权
标题翻译：用于RF信号产生的现场可调自旋转矩振荡器
公开(公告)号：US08203389B1
公开(公告)日：2012-06-19
申请号：US12928194
申请日：2010-12-06
申请人： Yuchen Zhou , Kunliang Zhang , Pokang Wang , Joe Smyth
发明人： Yuchen Zhou , Kunliang Zhang , Pokang Wang , Joe Smyth
IPC分类号： H03L7/26
CPC分类号： H03B15/006
摘要： A spin transfer oscillator (STO) device is disclosed with a giant magnetoresistive (GMR) junction comprising a magnetic resistance layer (MRL)/spacer/magnetic oscillation layer (MOL) configuration, and a MR sensor including a sensing layer/junction layer/reference layer configuration. MOL and sensing layer are magnetostatically coupled and separated by a conductive spacer. MRL has perpendicular magnetic anisotropy while MOL and sensing layer have a Mst (saturation magnetization×thickness) value within ±50% of each other. When a magnetic field is applied perpendicular to the planes of the MOL and a high density current flows from the conductive spacer to the MRL, a MOL oscillation state with a certain frequency is induced. Consequently, the sensing layer oscillates with a similar RF frequency and when a low density current flows across the MR sensor, an AC voltage signal is generated to determine the sensing layer frequency that can be varied by adjusting the applied field.
摘要翻译：公开了具有包括磁阻层（MRL）/间隔物/磁振荡层（MOL））构造的巨磁阻（GMR）结的自旋转移振荡器（STO）装置，以及包括感测层/结层/参考层配置。 MOL和感测层通过导电间隔件静磁耦合和分离。 MRL具有垂直磁各向异性，而MOL和感测层的Mst（饱和磁化强度×厚度）值彼此在±50％以内。当垂直于MOL的平面施加磁场并且高密度电流从导电间隔物流向MRL时，产生具有一定频率的MOL振荡状态。因此，感测层以类似的RF频率振荡，并且当低密度电流流过MR传感器时，产生AC电压信号以确定可以通过调整所施加的场来改变的感测层频率。

59. 发明申请

US20120139649A1 FIELD TUNABLE SPIN TORQUE OSCILLATOR FOR RF SIGNAL GENERATION 有权
标题翻译：用于RF信号发生的现场可调旋转扭矩振荡器
公开(公告)号：US20120139649A1
公开(公告)日：2012-06-07
申请号：US12928194
申请日：2010-12-06
申请人： Yuchen Zhou , Kunliang Zhang , Pokang Wang , Joe Smyth
发明人： Yuchen Zhou , Kunliang Zhang , Pokang Wang , Joe Smyth
IPC分类号： H03B28/00
CPC分类号： H03B15/006
摘要： A spin transfer oscillator (STO) device is disclosed with a giant magnetoresistive (GMR) junction comprising a magnetic resistance layer (MRL)/spacer/magnetic oscillation layer (MOL) configuration, and a MR sensor including a sensing layer/junction layer/reference layer configuration. MOL and sensing layer are magnetostatically coupled and separated by a conductive spacer. MRL has perpendicular magnetic anisotropy while MOL and sensing layer have a Mst (saturation magnetization×thickness) value within ±50% of each other. When a magnetic field is applied perpendicular to the planes of the MOL and a high density current flows from the conductive spacer to the MRL, a MOL oscillation state with a certain frequency is induced. Consequently, the sensing layer oscillates with a similar RF frequency and when a low density current flows across the MR sensor, an AC voltage signal is generated to determine the sensing layer frequency that can be varied by adjusting the applied field.
摘要翻译：公开了具有包括磁阻层（MRL）/间隔物/磁振荡层（MOL））构造的巨磁阻（GMR）结的自旋转移振荡器（STO）装置，以及包括感测层/结层/参考层配置。 MOL和感测层通过导电间隔件静磁耦合和分离。 MRL具有垂直磁各向异性，而MOL和感测层的Mst（饱和磁化强度×厚度）值彼此在±50％以内。当垂直于MOL的平面施加磁场并且高密度电流从导电间隔物流向MRL时，产生具有一定频率的MOL振荡状态。因此，感测层以类似的RF频率振荡，并且当低密度电流流过MR传感器时，产生AC电压信号以确定可以通过调整所施加的场来改变的感测层频率。

60. 发明授权

US08477453B2 Perpendicular magnetic recording write head with milling defined track width 有权
标题翻译：垂直磁记录写头具有铣削定义的轨道宽度
公开(公告)号：US08477453B2
公开(公告)日：2013-07-02
申请号：US12799927
申请日：2010-05-05
申请人： Kenichi Takano , Yuchen Zhou , Min Li , Joe Smyth
发明人： Kenichi Takano , Yuchen Zhou , Min Li , Joe Smyth
IPC分类号： G11B5/31
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/314 , G11B5/315 , G11B5/3163 , G11B2005/0024
摘要： A main pole layer having at least a leading taper and trimmed pole tip portion is described. The leading taper increases head field up to ≧15000 Oe even for narrow track widths approaching 50 nm. For MAMR applications, a STO and trailing shield are sequentially formed on a trailing pole tip side. Furthermore, full side shields may be added to reduce fringing field. Another embodiment involves including both of a leading taper and trailing taper at the pole tip where leading taper angle is between 20° and 60° and trailing taper angle is from 10° to 45°. A method is provided for forming various embodiments of the present invention. A key feature is that milling depth at an effective neck height distance is greater than or equal to the pole tip thickness. A self aligned STO may be formed by the same ion milling step that defines track width.
摘要翻译：描述了至少具有前导锥形和微调极尖部分的主极层。即使对于接近50nm的窄轨道宽度，领先的锥形也增加了头部场>达15000 Oe。对于MAMR应用，STO和后屏蔽依次形成在尾极端侧。此外，可以添加全侧屏蔽以减少边缘场。另一实施例涉及在极尖处包括前导锥形和后锥形两者，其中前锥度角在20°至60°之间，后锥角度为10°至45°。提供了一种用于形成本发明的各种实施例的方法。一个关键特征是在有效颈部高度距离处的铣削深度大于或等于极尖厚度。可以通过定义轨道宽度的相同离子铣削步骤形成自对准STO。

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