公开(公告)号：US09495980B1

公开(公告)日：2016-11-15

申请号：US14886900

申请日：2015-10-19

申请人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Kazuki Sato ,  Hironori Araki ,  Kazumasa Yasuda ,  Kenichi Takano

发明人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Kazuki Sato ,  Hironori Araki ,  Kazumasa Yasuda ,  Kenichi Takano

IPC分类号： G11B5/127 ,  G11B5/39

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3123

摘要： A magnetic head includes a coil, a main pole and a return path section. The return path section includes a yoke section, and a coupling section coupling the yoke section to the main pole. The coil includes a first coil portion surrounding at least part of an outer peripheral surface of the coupling section, and a second coil portion surrounding at least part of the entire perimeter of the main pole as viewed from the medium facing surface. The winding of the coil includes a common portion used in common to form part of the first coil portion and part of the second coil portion.

摘要翻译： 磁头包括线圈，主极和返回路径部分。 返回通路部分包括轭部，以及将轭部连接到主极的耦合部。 线圈包括围绕耦合部分的外周表面的至少一部分的第一线圈部分和围绕从介质面向表面观察的主极的整个周边的至少一部分的第二线圈部分。 线圈的绕组包括共同使用的共同部分，以形成第一线圈部分的一部分和第二线圈部分的一部分。

公开(公告)号：US09542960B2

公开(公告)日：2017-01-10

申请号：US14720319

申请日：2015-05-22

申请人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Kazuki Sato ,  Hideo Mamiya ,  Kenichi Takano

发明人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Kazuki Sato ,  Hideo Mamiya ,  Kenichi Takano

IPC分类号： G11B11/00 ,  G11B5/31 ,  G11B5/48 ,  G11B5/00 ,  G11B11/105 ,  G11B5/60

CPC分类号： G11B5/315 ,  G11B5/314 ,  G11B5/3163 ,  G11B5/6088 ,  G11B11/10534 ,  G11B11/10536 ,  G11B11/10543 ,  G11B2005/0021

摘要： A thermally-assisted magnetic recording head includes a main pole, a plasmon generator, and first and second side shields. The main pole has a front end face located in the medium facing surface. The plasmon generator has a near-field light generating surface located in the medium facing surface. The front end face of the main pole includes a first end face portion, and a second end face portion greater in width than the first end face portion. The first and second side shields have first and second side shield end faces located on opposite sides of at least part of the near-field light generating surface and at least part of the first end face portion in the track width direction.

摘要翻译： 热辅助磁记录头包括主极，等离子体激元发生器以及第一和第二侧屏蔽。 主杆具有位于介质面对表面中的前端面。 等离子体发生器具有位于介质面对表面中的近场光产生表面。 主极的前端面包括第一端面部分和宽度大于第一端面部分的第二端面部分。 第一和第二侧面屏蔽具有位于近场光产生表面的至少一部分的相对侧上的第一和第二侧屏蔽端面以及轨道宽度方向上的第一端面部分的至少一部分。

公开(公告)号：US09704513B2

公开(公告)日：2017-07-11

申请号：US14930084

申请日：2015-11-02

申请人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Kazuki Sato ,  Yukinori Ikegawa ,  Shigeki Tanemura ,  Kenichi Takano

发明人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Kazuki Sato ,  Yukinori Ikegawa ,  Shigeki Tanemura ,  Kenichi Takano

IPC分类号： G11B5/17 ,  G11B5/31 ,  G11B5/127

CPC分类号： G11B5/17 ,  G11B5/1278 ,  G11B5/3123

摘要： A magnetic head includes a coil, a main pole and a return path section. The return path section is located on the trailing side relative to the main pole so that a space is defined between the main pole and itself. The coil includes a first winding portion and a second winding portion connected in series. The first winding portion extends to pass through the aforementioned space, and extends once around the entire perimeter of the main pole as viewed from the medium facing surface. The second winding portion does not pass through the aforementioned space, and surrounds only a part of the entire perimeter of the main pole as viewed from the medium facing surface.

公开(公告)号：US09653100B1

公开(公告)日：2017-05-16

申请号：US14945004

申请日：2015-11-18

申请人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Kazuki Sato ,  Shigeki Tanemura ,  Yukinori Ikegawa ,  Kenichi Takano

发明人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Kazuki Sato ,  Shigeki Tanemura ,  Yukinori Ikegawa ,  Kenichi Takano

IPC分类号： G11B5/127 ,  G11B5/39 ,  G11B5/17

CPC分类号： G11B5/1278 ,  G11B5/115 ,  G11B5/17 ,  G11B5/3116 ,  G11B5/3123 ,  G11B5/3146 ,  G11B5/3163 ,  G11B5/3912

摘要： A magnetic head includes a coil, a main pole, a write shield, and a return path section. The coil includes a coil element located on the trailing side of the main pole. The coil element has a front end face facing toward the medium facing surface. The return path section includes a first portion, a second portion, and an intermediate film interposed between the first portion and the second portion. Part of the first portion is interposed between the medium facing surface and the front end face of the coil element. Part of the second portion is interposed between the first portion and the front end face of the coil element.

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。

公开(公告)号：US20090268344A1

公开(公告)日：2009-10-29

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： G11B5/23

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。

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。

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。

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。

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。