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1. 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。

2. 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。

3. 发明授权

US08881376B2 Method of manufacturing a perpendicular magnetic recording head laminated with AFM-FM phase change material 有权
标题翻译：制造用AFM-FM相变材料层叠的垂直磁记录头的方法
公开(公告)号：US08881376B2
公开(公告)日：2014-11-11
申请号：US13199179
申请日：2011-08-22
申请人： Yuchen Zhou , Kenichi Takano , Kowang Liu , Kunliang Zhang , Liejie Guan , Moris Dovek , Joe Smyth
发明人： Yuchen Zhou , Kenichi Takano , Kowang Liu , Kunliang Zhang , Liejie Guan , Moris Dovek , Joe Smyth
IPC分类号： G11B5/127 , G11B5/21 , G11B5/31 , G11B5/147
CPC分类号： G11B5/3113 , G11B5/1278 , G11B5/147 , G11B5/3146 , Y10T29/49032 , Y10T29/49034 , Y10T29/49043 , Y10T29/49044
摘要： A method of manufacturing a PMR writer is disclosed that minimizes pole erasure during non-writing and maximize write field during writing by including an AFM-FM phase change material spacer that is in an AFM state during non-writing and switches to a FM state by heating during writing. The main pole layer including the write pole may be formed as a laminated structure by a sputter deposition process wherein a plurality of “n” ferromagnetic layers and “n−1” AFM-FM phase change material layers are laid down in an alternating manner. The AFM-FM phase change material is preferably a FeRh or FeRhX alloy (X=Pt, Pd, or Ir) having a Rh content >35 atomic %, and may also be used as a flux gate to prevent yoke flux from leaking into the write pole tip.
摘要翻译：公开了一种制造PMR写入器的方法，其在非写入期间使磁极擦除最小化，并且在写入期间使写入场最大化，包括在非写入期间处于AFM状态的AFM-FM相变材料间隔物，并且通过书写过程中加热。包括写极的主极层可以通过溅射沉积工艺形成为层叠结构，其中以交替的方式放置多个“n”个铁磁层和“n-1”个AFM-FM相变材料层。 AFM-FM相变材料优选为Rh含量> 35原子％的FeRh或FeRhX合金（X = Pt，Pd或Ir），并且还可以用作磁通门以防止磁轭焊剂泄漏到写极点。

4. 发明授权

US08503271B2 Method of forming a plasmon antenna with magnetic core for thermally assisted magnetic recording 有权
标题翻译：用于磁辅助磁记录的磁芯形成等离子体天线的方法
公开(公告)号：US08503271B2
公开(公告)日：2013-08-06
申请号：US13551670
申请日：2012-07-18
申请人： Yuchen Zhou , Kenichi Takano , Xuhui Jin , Erhard Schreck , Moris Dovek , Joe Smyth
发明人： Yuchen Zhou , Kenichi Takano , Xuhui Jin , Erhard Schreck , Moris Dovek , Joe Smyth
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/02 , G11B5/3116 , G11B5/3146 , G11B5/6088 , G11B2005/0005 , G11B2005/0021 , Y10T29/49032
摘要： A method of forming a TAMR (Thermal Assisted Magnetic Recording) write head that uses the energy of optical-laser generated edge plasmons in a plasmon antenna to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The method incorporates forming a magnetic core within the plasmon antenna, so the antenna effectively becomes an extension of the magnetic pole and produces a magnetic field whose maximum gradient overlaps the region being heated by the edge plasmons generated in the conducting layer of the antenna surrounding the antenna's magnetic core.
摘要翻译：一种形成TAMR（热辅助磁记录）写头的方法，其使用等离子体激元中的激光产生的边缘等离子体激元的能量来局部加热磁记录介质并降低其矫顽力和磁各向异性。该方法包括在等离子体激元天线内形成磁芯，因此天线有效地成为磁极的延伸，并产生磁场，其最大梯度与被天线周围的天线导电层中产生的边缘等离子体激发加热的区域重叠天线的磁芯。

5. 发明授权

US08059496B1 Magnetic core plasmon antenna with recessed plasmon layer 有权
标题翻译：具有凹陷等离子体层的磁芯等离子体天线
公开(公告)号：US08059496B1
公开(公告)日：2011-11-15
申请号：US12804232
申请日：2010-07-16
申请人： Yuchen Zhou , Xuhui Jin , Kenichi Takano , Moris Dovek , Tobias Maletzky , Erhard Schreck , Joe Smyth
发明人： Yuchen Zhou , Xuhui Jin , Kenichi Takano , Moris Dovek , Tobias Maletzky , Erhard Schreck , Joe Smyth
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/1278 , G11B5/3116 , G11B5/6088 , G11B2005/0021
摘要： Various embodiments of a TAMR head having a magnetic core antenna (MCA) with a recessed plasmon layer are disclosed. An end of the plasmon layer is separated from the ABS by a magnetic layer that transmits the plasmon mode from the plasmon layer and transmits magnetic flux from an adjacent main pole layer. Both of the MCA and magnetic layer may have a triangular shape from an ABS view. There may be a non-magnetic separation layer between the MCA magnetic core and the main pole. Furthermore, a magnetic shield may be included with a side at the ABS, a side facing an end of a waveguide that transmits electromagnetic radiation to the MCA, and a side facing an edge of the plasmon layer. The recessed plasmon layer allows an improved overlay of the thermal heating spot on the magnetic field gradient at the magnetic medium that provides better TAMR performance.
摘要翻译：公开了具有带凹陷等离子体层的磁芯天线（MCA）的TAMR磁头的各种实施例。等离子体激元层的一端通过从等离子体激元层传输等离子体模式的磁层与ABS分离，并从相邻的主极层传输磁通量。从ABS观点来看，MCA和磁性层都可以具有三角形形状。在MCA磁芯和主极之间可能存在非磁性分离层。此外，在ABS的一侧可以包括磁屏蔽，面向朝向MCA的电磁辐射的波导的端部的一侧以及面向等离子体层的边缘的一侧。凹入的等离子体膜层允许在磁介质上的磁场梯度上的热加热点的改进的叠加，从而提供更好的TAMR性能。

6. 发明申请

US20110188156A1 Shield design for magnetic recording head 有权
标题翻译：磁记录头的屏蔽设计
公开(公告)号：US20110188156A1
公开(公告)日：2011-08-04
申请号：US13066084
申请日：2011-04-06
申请人： Glen Garfunkel , Moris Dovek , Kenichi Takano , Joseph Smyth , Yuchen Zhou
发明人： Glen Garfunkel , Moris Dovek , Kenichi Takano , Joseph Smyth , Yuchen Zhou
IPC分类号： G11B5/11
CPC分类号： G11B5/11 , G11B5/3146 , G11B5/3912
摘要： A magnetic shield in which all domain patterns and orientations are stable and which are consistently repeated each time the shield is exposed to an initialization field, is disclosed. This is achieved by giving it a suitable shape which ensures that all closure domains can align themselves at a reduced angle relative to the initialization direction while still being roughly antiparallel to each other. Most, though not all, of these shapes are variations on trapezoids.
摘要翻译：公开了一种磁屏蔽，其中所有域图案和取向是稳定的，并且每当屏蔽暴露于初始化场时一直重复。这是通过赋予其合适的形状来实现的，该形状确保所有封闭区域可以相对于初始化方向以相对于初始化方向减小的角度对准它们，同时仍然彼此大致反平行。这些形状的大部分（尽管不是全部）是梯形的变化。

7. 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。

8. 发明授权

US08233358B2 Plasmon antenna with magnetic core for thermally assisted magnetic recording 有权
标题翻译：带磁芯的等离子体天线，用于热辅助磁记录
公开(公告)号：US08233358B2
公开(公告)日：2012-07-31
申请号：US12456290
申请日：2009-06-15
申请人： Yuchen Zhou , Kenichi Takano , Xuhui Jin , Erhard Schreck , Moris Dovek , Joe Smyth
发明人： Yuchen Zhou , Kenichi Takano , Xuhui Jin , Erhard Schreck , Moris Dovek , Joe Smyth
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/02 , G11B5/3116 , G11B5/3146 , G11B5/6088 , G11B2005/0005 , G11B2005/0021 , Y10T29/49032
摘要： A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser generated plasmons in a 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 of the magnetic recording field should be concentrated in the small region being heated. Typically this does not occur because the spot being heated by the antenna is offset from the position at which the magnetic pole concentrates its magnetic field. The present invention incorporates a magnetic core within a plasmon antenna, so the antenna effectively becomes an extension of the magnetic pole and produces a magnetic field whose maximum gradient overlaps the region being heated by edge plasmons being generated in a conducting layer surrounding the antenna's magnetic core.
摘要翻译： TAMR（热辅助磁记录）写头使用等离子体天线中激光产生的等离子体激元的能量来局部加热磁记录介质并降低其矫顽力和磁各向异性。为了使TAMR头能够最有效地运行，磁记录场的最大梯度应该集中在被加热的小区域中。通常这不会发生，因为被天线加热的点偏离磁极集中其磁场的位置。本发明在等离子体激元天线内结合有磁芯，因此天线有效地成为磁极的延伸，并产生磁场，其最大梯度与在天线的磁芯周围的导电层中产生的边缘等离子体激元加热的区域重叠。

9. 发明申请

US20090091861A1 Perpendicular magnetic recording write head with a side shield 有权
标题翻译：垂直磁记录头带侧面屏蔽
公开(公告)号：US20090091861A1
公开(公告)日：2009-04-09
申请号：US11906717
申请日：2007-10-03
申请人： Kenichi Takano , Lijie Guan , Yiu Liu , Joe Smyth , Moris Dovek
发明人： Kenichi Takano , Lijie Guan , Yiu Liu , Joe Smyth , Moris Dovek
IPC分类号： G11B5/33
CPC分类号： G11B5/3163 , G11B5/1278 , G11B5/3116 , G11B5/3146 , G11B5/315
摘要： A side shield structure for a PMR write head is disclosed that narrows write width and minimizes adjacent track and far track erasure. The side shield structure on each side of the write pole has two sections. One section along the ABS and adjacent to the pole tip has a height (SSH1) defined by SSH1≦[(0.6×neck height)+0.08] microns. There is a non-magnetic gap layer between the first section and a second section that is formed adjacent to the flared sides of the main pole layer and serves to suction leakage flux from the flared portion and prevent unwanted flux from reaching the first side shield sections. A fabrication method is provided that includes electroplating the first side shield sections, depositing the non-magnetic gap layer, and then electroplating the second side shield sections. Subsequently, a main pole layer and a trailing shield are formed.
摘要翻译：公开了一种用于PMR写头的侧屏蔽结构，其减小写入宽度并使相邻轨道和远轨道擦除最小化。写磁极两侧的侧面屏蔽结构有两个部分。沿着ABS并且与极端部相邻的一个部分具有由SSH1 <= [（0.6xneck height）+0.08]]微米定义的高度（SSH1）。在第一部分和第二部分之间存在非磁性间隙层，该第二部分与主极层的扩张侧相邻形成，并用于从扩张部分吸收泄漏的焊剂，并防止不期望的焊剂到达第一侧面屏蔽部分。提供一种制造方法，其包括电镀第一侧屏蔽部分，沉积非磁隙层，然后电镀第二侧屏蔽部分。随后，形成主极层和后屏蔽。

10. 发明申请

US20090052092A1 Perpendicular magnetic recording head laminated with AFM-FM phase change material 有权
标题翻译：垂直磁记录头与AFM-FM相变材料层压
公开(公告)号：US20090052092A1
公开(公告)日：2009-02-26
申请号：US11894494
申请日：2007-08-21
申请人： Yuchen Zhou , Kenichi Takano , Kowang Liu , Kunliang Zhang , Liejie Guan , Moris Dovek , Joe Smyth
发明人： Yuchen Zhou , Kenichi Takano , Kowang Liu , Kunliang Zhang , Liejie Guan , Moris Dovek , Joe Smyth
IPC分类号： G11B5/33
CPC分类号： G11B5/3113 , G11B5/1278 , G11B5/147 , G11B5/3146 , Y10T29/49032 , Y10T29/49034 , Y10T29/49043 , Y10T29/49044
摘要： A PMR writer is disclosed that minimizes pole erasure during non-writing and maximize write field during writing through an AFM-FM phase change material that is in an AFM state during non-writing and switches to a FM state by heating during writing. The main pole layer including the write pole may be comprised of a laminated structure having a plurality of “n” ferromagnetic layers and “n-1” AFM-FM phase change material layers arranged in an alternating manner. The AFM-FM phase change material is preferably a FeRh or FeRhX alloy (X=Pt, Pd, or Ir) having a Rh content >35 atomic %. AFM-FM phase change material may also be used as a flux gate to prevent yoke flux from leaking into the write pole tip. Heating for the AFM to FM transition is provided by write coils and/or a coil located near the AFM-FM phase change material to enable faster transition times.
摘要翻译：公开了一种PMR写入器，其在非写入期间最小化磁极擦除，并且通过在非写入期间处于AFM状态的AFM-FM相变材料的写入期间写入字段最大化并且在写入期间通过加热切换到FM状态。包括写极的主极层可以由具有多个“n”个铁磁层和“n-1”个AFM-FM相变材料层的交替排列的层压结构构成。 AFM-FM相变材料优选为Rh含量> 35原子％的FeRh或FeRhX合金（X = Pt，Pd或Ir）。 AFM-FM相变材料也可以用作磁通门，以防止磁轭磁通泄漏到写极尖端。 AFM到FM转换的加热由位于AFM-FM相变材料附近的写入线圈和/或线圈提供，以实现更快的转换时间。

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