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1. 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。

2. 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。

3. 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。

4. 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。

5. 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。

6. 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。

7. 发明授权

US08625234B2 Graded bevel tapered write pole design for field enhancement 有权
标题翻译：分级斜面锥形写柱设计用于场增强
公开(公告)号：US08625234B2
公开(公告)日：2014-01-07
申请号：US12150553
申请日：2008-04-29
申请人： Lijie Guan , Po-Kang Wang , Moris Dovek , Joe Smyth , Kenichi Takano , Yoshitaka Sasaki
发明人： Lijie Guan , Po-Kang Wang , Moris Dovek , Joe Smyth , Kenichi Takano , Yoshitaka Sasaki
IPC分类号： G11B5/31
CPC分类号： G11B5/1278 , G11B5/232 , G11B5/3116 , G11B5/3146
摘要： A structure and a process for a perpendicular write pole that provides increased magnetic flux at the ABS is disclosed. This is accomplished by increasing the amount of write flux that originates above the write gap, without changing the pole taper at the ABS. Three embodiment of the invention are discussed.
摘要翻译：公开了一种用于在ABS处提供增加的磁通量的垂直写入极的结构和工艺。这是通过增加起始于写入间隙的写入通量的量来实现的，而不改变ABS处的极锥度。讨论本发明的三个实施例。

8. 发明授权

US08339751B2 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：US08339751B2
公开(公告)日：2012-12-25
申请号：US13066099
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： G11B5/39
CPC分类号： G11B5/11 , G11B5/3146 , G11B5/3912
摘要： A method is disclosed for forming a magnetic shield in which all domain patterns and orientations are stable and which are consistently repeated each time said shield is exposed to an initialization field. The shield is given a 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 one another. Most, though not all, of these shapes are variations on trapezoids.
摘要翻译：公开了一种用于形成磁屏蔽的方法，其中所有区域图案和取向是稳定的，并且每当所述屏蔽暴露于初始化场时一直被重复。该护罩具有一种形状，其确保所有封闭区域能够相对于初始化方向以较小的角度对准自身，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。

9. 发明申请

US20120087042A1 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：US20120087042A1
公开(公告)日：2012-04-12
申请号：US13199188
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： G11B5/147 , G11B5/60
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 antiferromagnetic (AFM) state during non-writing and switches to a ferromagnetic (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, FeRhPt, FeRhPd, or FeRhIr and 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，并且在写入期间通过在非写入期间处于反铁磁（AFM）状态的AFM-FM相变材料中写入期间最大化写入场并且通过以下方式切换到铁磁（FM）状态：书写过程中加热。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FeRh，FeRhPt，FeRhPd或FeRhIr，并且还可以用作磁通门以防止磁轭焊剂泄漏到写极尖端。 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。

10. 发明授权

US08059366B2 Perpendicular magnetic recording head with a laminated pole 有权
标题翻译：带磁极的垂直磁记录头
公开(公告)号：US08059366B2
公开(公告)日：2011-11-15
申请号：US11879952
申请日：2007-07-19
申请人： Kenichi Takano , Lijie Guan , Yuchen Zhou , Joe Smyth , Moris Dovek
发明人： Kenichi Takano , Lijie Guan , Yuchen Zhou , Joe Smyth , Moris Dovek
IPC分类号： G11B5/147 , G11B5/127
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/147 , G11B5/3143
摘要： A laminated write pole layer for a PMR write head is disclosed in which a plurality of “n” magnetic layers and “n−1” non-magnetic spacers are formed in an alternating fashion on a substrate. The non-magnetic spacers promote exchange decoupling or antiferromagnetic coupling between adjacent magnetic layers. Writability is improved when the trailing magnetic layer has a thickness greater than the thickness of other magnetic layers and preferably >25% of the total thickness of the magnetic layers. The thicknesses of the other magnetic layers may be equal or may become progressively smaller with increasing distance from the trailing magnetic layer. In another embodiment, the non-magnetic spacer between the trailing magnetic layer and the nearest magnetic layer is replaced by a magnetic spacer made of a soft magnetic material to promote magnetic coupling and effectively increase the thickness of the trailing magnetic layer.
摘要翻译：公开了一种用于PMR写入头的层叠写入极层，其中在衬底上以交替的方式形成多个“n”个磁性层和“n-1”个非磁性间隔物。非磁性间隔物促进相邻磁性层之间的交换去耦或反铁磁耦合。当后磁性层的厚度大于其它磁性层的厚度，优选磁性层的总厚度的25％时，写入性能得到改善。其他磁性层的厚度可以相等或随着与后磁性层的距离的增加而逐渐变小。在另一个实施例中，后磁性层和最近的磁性层之间的非磁性间隔物被由软磁材料制成的磁性间隔物代替，以促进磁耦合并有效地增加后磁层的厚度。

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