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41. 发明申请

US20120092971A1 Cross-track alignment waveguides and alignment scheme using alignment waveguides 有权
标题翻译：使用对准波导的交叉轨道对准波导和对准方案
公开(公告)号：US20120092971A1
公开(公告)日：2012-04-19
申请号：US12925283
申请日：2010-10-18
申请人： Erhard Schreck , Xuhui Jin , Tobias Maletzky , Joe Smyth , Dayu Zhou , Yuchen Zhou , Kenichi Takano
发明人： Erhard Schreck , Xuhui Jin , Tobias Maletzky , Joe Smyth , Dayu Zhou , Yuchen Zhou , Kenichi Takano
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/105 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A waveguide structure for aligning a light source to a center waveguide (CWG) in a TAMR head is disclosed and includes two alignment waveguides (AWVG) symmetrically formed about a plane that bisects the CWG lengthwise dimension. Each AWVG has a light coupling section formed parallel to a side of the CWG and captures 0.5% to 10% of the light in the CWG. Each AWVG has an outlet that directs light to a photo detector or camera so that light intensity measurements lAWVG1 and lAWVG2 for first and second AWVG, respectively, can be taken at various positions of the light source. Optimum alignment occurs when (lAWVG1+lAWVG2) reaches a maximum value and |lAWVG1−lAWVG2| has a minimum value. AWVG outlets may be at the ABS, or at the side or back end of a slider. Measurement sensitivity is increased by decreasing the width of the AWVG.
摘要翻译：公开了一种用于将光源对准TAMR头中的中心波导（CWG）的波导结构，并且包括关于平分CWG纵向尺寸的平面对称地形成的两个对准波导（AWVG）。每个AWVG具有平行于CWG侧面并且捕获CWG中的0.5％至10％的光的光耦合部分。每个AWVG都有一个出口，可以将光引导到光电检测器或照相机，以便分别在光源的各个位置拍摄第一个和第二个AWVG的光强度测量值lAWVG1和lAWVG2。（lAWVG1 + 1AWVG2）达到最大值时，发生最佳对齐，并且| lAWVG1-1AWVG2 | 具有最小值。 AWVG插座可能位于ABS或滑块的侧面或后端。通过减小AWVG的宽度来提高测量灵敏度。

42. 发明申请

US20120020194A1 Plasmon shield to shape and reduce optical spot 有权
公开(公告)号：US20120020194A1
公开(公告)日：2012-01-26
申请号：US13200478
申请日：2011-09-23
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： G11B13/04
CPC分类号： G11B5/3146 , G11B5/1278 , G11B5/1871 , G11B5/23 , G11B5/3116 , G11B5/315 , G11B5/3163
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.

43. 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。

44. 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。

45. 发明申请

US20110273800A1 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：US20110273800A1
公开(公告)日：2011-11-10
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： G11B5/127 , C23C14/46
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，前导锥形也增加了顶场至≧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。

46. 发明授权

US08432639B2 PMR writer with π shaped shield 有权
标题翻译： PMR作家与pi形盾
公开(公告)号：US08432639B2
公开(公告)日：2013-04-30
申请号：US12800039
申请日：2010-05-06
申请人： Yan Wu , Kenichi Takano , Moris Dovek
发明人： Yan Wu , Kenichi Takano , Moris Dovek
IPC分类号： G11B5/10 , G11B5/31
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/315 , G11B5/3163
摘要： A perpendicular magnetic recording (PMR) head is fabricated with a pole tip shielded laterally by a pair of symmetrically separated side shields that extend from an edge of a trailing edge shield to form a shield with the shape of a π. The easy axis direction of the side shields is in the in-track direction. As a result, the side shields effectively shield the fringing fields of the magnetic pole tip from causing adjacent track erasures, while not adding their own fringing fields that could cause erasures even beyond adjacent tracks.
摘要翻译：垂直磁记录（PMR）头被制造成具有由一对对称分离的侧屏蔽横向屏蔽的极尖，该侧屏从后缘屏蔽的边缘延伸以形成具有pi形状的屏蔽。侧面屏蔽的易轴方向处于轨道内方向。结果，侧面屏蔽物有效地屏蔽磁极尖端的边缘区域而引起相邻的轨迹擦除，同时不添加它们自己的边缘区域，甚至可能导致相邻轨道之间的擦除。

47. 发明申请

US20050190493A1 Bottom pole structure with back-side steps 失效
标题翻译：底部柱结构带背面步骤
公开(公告)号：US20050190493A1
公开(公告)日：2005-09-01
申请号：US10789097
申请日：2004-02-27
申请人： Kenichi Takano , Moris Dovek
发明人： Kenichi Takano , Moris Dovek
IPC分类号： G11B5/31 , G11B5/127 , G11B5/147
CPC分类号： G11B5/1274
摘要： To generate a high data transfer rate from a magnetic write head, a faster flux rise time is needed. This often brings about severe excess saturation of the head and, as a result, adjacent track erasures often occur. This problem has been overcome by dividing the bottom pole into front and rear sections with a step between them. The write gap is part of the front section while the rear section (to which the front section is attached) is closer to the top pole so excess flux generated by higher write currents can be absorbed in a direction normal to the ABS instead of being diverted to the bottom pole shoulder.
摘要翻译：为了从磁写头产生高数据传输速率，需要更快的通量上升时间。这通常会导致头部的严重过度饱和，因此经常发生相邻的轨迹擦除。通过将底极分成前后两部分之间的台阶，已经克服了这个问题。写入间隙是前部的一部分，而后部（前部附接到其上）更接近顶极，因此由较高写入电流产生的过量磁通可以沿着垂直于ABS的方向吸收，而不是被转向到底极肩。

48. 发明申请

US20110273798A1 PMR writer with pi shaped shield 有权
标题翻译： PMR作家与pi形盾
公开(公告)号：US20110273798A1
公开(公告)日：2011-11-10
申请号：US12800039
申请日：2010-05-06
申请人： Yan Wu , Kenichi Takano , Moris Dovek
发明人： Yan Wu , Kenichi Takano , Moris Dovek
IPC分类号： G11B5/10
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/315 , G11B5/3163
摘要： A perpendicular magnetic recording (PMR) head is fabricated with a pole tip shielded laterally by a pair of symmetrically separated side shields that extend from an edge of a trailing edge shield to form a shield with the shape of a π. The easy axis direction of the side shields is in the in-track direction. As a result, the side shields effectively shield the fringing fields of the magnetic pole tip from causing adjacent track erasures, while not adding their own fringing fields that could cause erasures even beyond adjacent tracks.
摘要翻译：垂直磁记录（PMR）头被制造成具有由一对对称分离的侧屏蔽横向屏蔽的极尖，该侧屏从后缘屏蔽的边缘延伸以形成具有＆pgr形状的屏蔽。侧面屏蔽的易轴方向处于轨道内方向。结果，侧面屏蔽物有效地屏蔽磁极尖端的边缘区域而引起相邻的轨迹擦除，同时不添加它们自己的边缘区域，甚至可能导致相邻轨道之间的擦除。

49. 发明授权

US07327532B2 Bottom pole structure with back-side steps 失效
标题翻译：底部柱结构带背面步骤
公开(公告)号：US07327532B2
公开(公告)日：2008-02-05
申请号：US10789097
申请日：2004-02-27
申请人： Kenichi Takano , Moris Dovek
发明人： Kenichi Takano , Moris Dovek
IPC分类号： G11B5/187
CPC分类号： G11B5/1274
摘要： To generate a high data transfer rate from a magnetic write head, a faster flux rise time is needed. This often brings about severe excess saturation of the head and, as a result, adjacent track erasures often occur. This problem has been overcome by dividing the bottom pole into front and rear sections with a step between them. The write gap is part of the front section while the rear section (to which the front section is attached) is closer to the top pole so excess flux generated by higher write currents can be absorbed in a direction normal to the ABS instead of being diverted to the bottom pole shoulder.
摘要翻译：为了从磁写头产生高数据传输速率，需要更快的通量上升时间。这通常会导致头部的严重过度饱和，因此经常发生相邻的轨迹擦除。通过将底极分成前后两部分之间的台阶，已经克服了这个问题。写入间隙是前部的一部分，而后部（前部附接到其上）更接近顶极，因此由较高写入电流产生的过量磁通可以沿着垂直于ABS的方向吸收，而不是被转向到底极肩。

50. 发明授权

US08179628B2 Magnetic core plasmon antenna with improved coupling efficiency 有权
公开(公告)号：US08179628B2
公开(公告)日：2012-05-15
申请号：US12803874
申请日：2010-07-08
申请人： Yuchen Zhou , Tobias Maletzky , Xuhui Jin , Zhigang Bai , Kenichi Takano , Erhard Schreck
发明人： Yuchen Zhou , Tobias Maletzky , Xuhui Jin , Zhigang Bai , Kenichi Takano , Erhard Schreck
IPC分类号： G11B5/02 , G11B11/00
CPC分类号： G11B5/314 , B82Y20/00 , G02B6/1226 , G11B5/3163 , G11B5/6088 , G11B2005/0021
摘要： A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser generated plasmons in a magnetic core plasmon antenna to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. To enable the TAMR head to operate most effectively, the maximum gradient and value of the magnetic recording field should be at a point of the magnetic medium that is as close as possible to the point being heated. In addition, the coupling between the optical mode and the plasmon mode should be efficient so that maximum energy is transmitted to the medium. The present invention achieves both these objects by surrounding the magnetic core of a plasmon antenna by a variable thickness plasmon generating layer, whose thinnest and shortest portion is at the ABS end of the TAMR head and whose thickest and longest portion efficiently couples to the optical mode of a waveguide to produce a plasmon.

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