公开(公告)号：US08964514B2

公开(公告)日：2015-02-24

申请号：US13568542

申请日：2012-08-07

申请人： Kei Hirata ,  Ryo Hosoi ,  Keita Kawamori ,  Tetsuya Roppongi

发明人： Kei Hirata ,  Ryo Hosoi ,  Keita Kawamori ,  Tetsuya Roppongi

IPC分类号： G11B11/24 ,  G11B13/08 ,  G11B5/31 ,  G02B5/00 ,  G02B6/122

CPC分类号： G11B13/08 ,  G02B5/008 ,  G02B6/1226 ,  G11B5/3133 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021 ,  Y10T428/1171 ,  Y10T428/1193

摘要： A plasmon-generator of the invention is configured to include a first configuration member including a near-field light generating end surface; and a second configuration member joined and integrated with the first configuration member and not including the near-field light generating end surface. The first configuration member is configured to contain Au as a primary component and to contain any one or more elements selected from a group of Co, Fe, Sb, Nb, Zr, Ti, Hf, and Ta, and is configured so that a content percentage X1 of the contained element is within a range between 0.2 at % or more and 2.0 at % or less. Thereby, thermostability, optical characteristic, and the process stability are satisfied. Also, heat dissipation and heat generation suppression effect are extremely superior.

摘要翻译： 本发明的等离子体发生器被构造成包括包括近场光产生端面的第一配置构件; 以及第二构造构件，其与所述第一构造构件接合并且一体化，并且不包括所述近场光产生端面。 第一配置构件被配置为包含Au作为主要成分并且包含选自Co，Fe，Sb，Nb，Zr，Ti，Hf和Ta中的任何一种或多种元素，并且被配置为使得含量 所含有的元素的X1的比例在0.2at％以上且2.0at％以下的范围内。 由此，满足热稳定性，光学特性和工艺稳定性。 此外，散热和发热抑制效果非常优异。

公开(公告)号：US08605387B2

公开(公告)日：2013-12-10

申请号：US13412109

申请日：2012-03-05

申请人： Kei Hirata ,  Kosuke Tanaka ,  Tetsuya Roppongi

发明人： Kei Hirata ,  Kosuke Tanaka ,  Tetsuya Roppongi

IPC分类号： G11B5/127

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/0021 ,  Y10T428/11

摘要： A thermally-assisted magnetic recording head includes a magnetic pole and a heating element. The magnetic pole has a front end face located in a medium facing surface. The magnetic pole forms on a track a distribution of write magnetic field strength that peaks at a first position on the track. The heating element forms on the track a distribution of temperature that peaks at a second position on the track. The first position is located on the trailing side relative to the second position. The front end face of the magnetic pole has a main portion and first and second extended portions. The first and second extended portions are extended in the track width direction from the main portion at positions on the leading side relative to the center of the main portion in the direction of travel of a magnetic recording medium.

摘要翻译： 热辅助磁记录头包括磁极和加热元件。 磁极具有位于介质相对表面中的前端面。 磁道在轨道上形成写入磁场强度的分布，其在轨道上的第一位置处达到峰值。 加热元件在轨道上形成在轨道上的第二位置处峰值的温度分布。 第一位置位于相对于第二位置的后侧。 磁极的前端面具有主要部分和第一和第二延伸部分。 第一延伸部分和第二延伸部分在磁记录介质的行进方向上相对于主要部分的中心在前侧的位置处从主要部分在轨道宽度方向上延伸。

公开(公告)号：US08570843B2

公开(公告)日：2013-10-29

申请号：US13402318

申请日：2012-02-22

申请人： Kei Hirata ,  Kosuke Tanaka ,  Tsutomu Chou ,  Susumu Aoki ,  Makoto Isogai ,  Tetsuya Roppongi

发明人： Kei Hirata ,  Kosuke Tanaka ,  Tsutomu Chou ,  Susumu Aoki ,  Makoto Isogai ,  Tetsuya Roppongi

IPC分类号： G11B11/00

CPC分类号： G11B5/313 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/3146 ,  G11B5/6088 ,  G11B2005/0021

摘要： The present invention provides a thermally assisted magnetic head with improved recording performance. The thermally assisted magnetic head includes a recording element and a near-field light generating element. The recording element includes a main pole appearing on a medium-facing surface, and a bit inversion starting region intended to be a maximum recording magnetic field generating position is formed at a leading edge of the main pole. The near-field light generating element is located on a leading side of the main pole and capable of creating a heating spot due to a near-field light on a near-field light generating end face appearing on the medium-facing surface. The bit inversion starting region is located within one-half of a diameter of the heating spot from a center of the heating spot.

摘要翻译： 本发明提供了具有改进的记录性能的热辅助磁头。 热辅助磁头包括记录元件和近场光产生元件。 记录元件包括出现在面向中间的表面上的主极，并且在主极的前缘形成旨在成为最大记录磁场产生位置的位反转起始区。 近场光产生元件位于主极的前导侧，并且能够在出现在面向中间的表面上的近场光产生端面上产生由于近场光产生的加热点。 位反转起始区域位于加热点的直径从加热点的中心的一半的范围内。

公开(公告)号：US08462594B1

公开(公告)日：2013-06-11

申请号：US13405893

申请日：2012-02-27

申请人： Susumu Aoki ,  Kosuke Tanaka ,  Tetsuya Roppongi ,  Kei Hirata ,  Takeshi Tsutsumi

发明人： Susumu Aoki ,  Kosuke Tanaka ,  Tetsuya Roppongi ,  Kei Hirata ,  Takeshi Tsutsumi

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

摘要： A thermally-assisted magnetic recording head includes a medium facing surface, a magnetic pole, a waveguide including a core and a cladding, and a plasmon generator. The magnetic pole is located forward of the core in the direction of travel of a magnetic recording medium. The plasmon generator is disposed between the core and the magnetic pole. The core has an evanescent light generating surface facing toward the plasmon generator. The plasmon generator has a front end face located in the medium facing surface, a flat surface facing toward the'evanescent light generating surface, and first and second side surfaces that are at a distance from each other and are located farther from the evanescent light generating surface than is the flat surface.

摘要翻译： 一种热辅助磁记录头包括面向介质的表面，磁极，包括芯和包层的波导，以及等离子体激元发生器。 磁极位于磁芯的前方，位于磁记录介质的行进方向。 等离子体发生器设置在芯和磁极之间。 核心具有面向等离子体发生器的ev逝光产生表面。 等离子体激元发生器具有位于介质面向表面中的前端面，面向朝向光生成表面的平坦表面，以及彼此相距一定距离并且远离产生ev逝光的第一和第二侧表面 表面比平坦的表面。

公开(公告)号：US08325570B1

公开(公告)日：2012-12-04

申请号：US13363795

申请日：2012-02-01

申请人： Kosuke Tanaka ,  Tetsuya Roppongi ,  Kei Hirata ,  Susumu Aoki ,  Takahiko Izawa ,  Makoto Isogai ,  Keita Kawamori ,  Takeshi Tsutsumi

发明人： Kosuke Tanaka ,  Tetsuya Roppongi ,  Kei Hirata ,  Susumu Aoki ,  Takahiko Izawa ,  Makoto Isogai ,  Keita Kawamori ,  Takeshi Tsutsumi

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

摘要： A thermally-assisted magnetic recording head includes: a medium facing surface; a magnetic pole; a waveguide including a core and a cladding; a plasmon generator; and a protruding member. The protruding member is disposed between the medium facing surface and a front end face of the core facing toward the medium facing surface. The protruding member has a first end face located in the medium facing surface, and a second end face facing toward the front end face of the core and receiving light having propagated through the core and passed through the front end face. The protruding member is formed of a metal different from both a material forming the magnetic pole and a material forming the plasmon generator. The protruding member is heated and expanded by the light received at the second end face, so that the first end face gets protruded toward a magnetic recording medium.

摘要翻译： 一种热辅助磁记录头包括：面向介质的表面; 磁极 包括芯和包层的波导; 等离子体发生器; 和突出部件。 突出构件设置在面向介质的表面和芯的前端面之间，面向面向介质的表面。 突出构件具有位于介质相对表面中的第一端面和面向芯的前端面的第二端面，并且接收已经穿过芯并且穿过前端面的光。 突出部件由不同于形成磁极的材料和形成等离子体激元发生器的材料形成。 突出部件被第二端面所接收的光线加热膨胀，使得第一端面朝向磁记录介质突出。

公开(公告)号：US20080291582A1

公开(公告)日：2008-11-27

申请号：US11802219

申请日：2007-05-21

申请人： Kei Hirata ,  Norikazu Ota ,  Yuichi Watabe ,  Tetsuro Sasaki ,  Takeo Kagami ,  Tetsuya Roppongi ,  Kazuki Sato ,  Yuji Otsubo ,  Sohei Horiuchi ,  Yoshiaki Tanaka ,  Kenji Yokoyama ,  Noriaki Kasahara

发明人： Kei Hirata ,  Norikazu Ota ,  Yuichi Watabe ,  Tetsuro Sasaki ,  Takeo Kagami ,  Tetsuya Roppongi ,  Kazuki Sato ,  Yuji Otsubo ,  Sohei Horiuchi ,  Yoshiaki Tanaka ,  Kenji Yokoyama ,  Noriaki Kasahara

IPC分类号： G11B5/10

CPC分类号： G11B5/3146 ,  G11B5/11 ,  G11B5/3912 ,  G11B5/3967 ,  G11B5/6064

摘要： Provided is a thin film magnetic head capable of suppressing an occurrence of a track erase, decreasing an influence on a magnetoresistive element caused by a magnetic flux generated from a thin film coil, and further decreasing the parasitic capacity. The thin film magnetic head has, in order in a stacked direction, a first magnetic shield layer, a magnetoresistive element, a second magnetic shield layer, a third magnetic shield layer, a main magnetic pole layer and a return yoke layer. A width in a track width direction of at least one of the first and the second magnetic shield layers is smaller than widths in a track width direction of the third magnetic shield layer and the return yoke layer.

摘要翻译： 提供一种薄膜磁头，其能够抑制磁道擦除的发生，减少由由薄膜线圈产生的磁通引起的对磁阻元件的影响，并进一步降低寄生电容。 薄膜磁头沿堆叠方向依次具有第一磁屏蔽层，磁阻元件，第二磁屏蔽层，第三磁屏蔽层，主磁极层和返回磁轭层。 第一和第二磁屏蔽层中的至少一个的轨道宽度方向上的宽度小于第三磁屏蔽层和返回磁轭层的磁道宽度方向上的宽度。

公开(公告)号：US07679861B2

公开(公告)日：2010-03-16

申请号：US11591504

申请日：2006-11-02

申请人： Kei Hirata ,  Kiyoshi Noguchi

发明人： Kei Hirata ,  Kiyoshi Noguchi

IPC分类号： G11B5/31

CPC分类号： G11B5/3116 ,  G11B5/1278

摘要： A pole layer incorporates a track width defining portion and a wide portion. The track width defining portion has an end face that is located in the medium facing surface and that defines the track width. The maximum width of the wide portion is greater than the track width and equal to or greater than the length of the wide portion taken in the direction orthogonal to the medium facing surface. When the coil is generating no magnetic field, in the end face of the track width defining portion, there exist first and second regions in which the directions of components of magnetization orthogonal to the medium facing surface are opposite.

摘要翻译： 极层包括轨道宽度限定部分和宽部分。 轨道宽度限定部分具有位于介质面向表面中并限定轨道宽度的端面。 宽部分的最大宽度大于轨道宽度，并且等于或大于在与面向介质的表面正交的方向上拍摄的宽部分的长度。 当线圈不产生磁场时，在轨道宽度限定部分的端面中，存在第一和第二区域，其中与面向介质的表面正交的磁化分量的方向相反。

公开(公告)号：US07663845B2

公开(公告)日：2010-02-16

申请号：US11616503

申请日：2006-12-27

申请人： Kei Hirata ,  Koji Shimazawa ,  Atsushi Yamaguchi ,  Kiyoshi Noguchi

发明人： Kei Hirata ,  Koji Shimazawa ,  Atsushi Yamaguchi ,  Kiyoshi Noguchi

IPC分类号： G11B5/11 ,  G11B5/39

CPC分类号： G11B5/3912

摘要： A current-perpendicular-to-plane magneto-resistive element includes a magneto-resistive film and a pair of upper and lower magnetic shielding films holding the magneto-resistive film therebetween for current feeding. The lower magnetic shielding film has an at least two-layer structure including a crystalline material layer and an amorphous material layer disposed below the crystalline material layer.

摘要翻译： 电流 - 垂直于平面的磁阻元件包括磁阻膜和一对上下磁屏蔽膜，其在其间保持用于电流馈送的磁阻膜。 下磁屏蔽膜具有至少两层结构，包括结晶材料层和设置在结晶材料层下方的无定形材料层。

公开(公告)号：US20060203379A1

公开(公告)日：2006-09-14

申请号：US11337659

申请日：2006-01-24

申请人： Kei Hirata ,  Takahiko Machita ,  Kiyoshi Noguchi

发明人： Kei Hirata ,  Takahiko Machita ,  Kiyoshi Noguchi

IPC分类号： G11B5/127

CPC分类号： G11B5/1278

摘要： A perpendicular magnetic recording element includes a recording magnetic pole film and a write shield film. The recording magnetic pole film has a yoke portion and a main magnetic pole for perpendicular recording. The main magnetic pole projects from a front end of the yoke portion to have an end on a medium-facing surface. The write shield film faces the recording magnetic pole film and has a height equal to or smaller than that of the recording magnetic pole film, as measured rearward from the medium-facing surface.

摘要翻译： 垂直磁记录元件包括记录磁极膜和写保护膜。 记录磁极膜具有用于垂直记录的磁轭部分和主磁极。 主磁极从磁轭部的前端突出，以在中间面的表面上具有一端。 写入屏蔽膜面向记录磁极膜，并且具有与记录磁极膜相同或更小的高度，从中间面向后测量。

公开(公告)号：US07440238B2

公开(公告)日：2008-10-21

申请号：US11410043

申请日：2006-04-25

申请人： Kei Hirata ,  Kiyoshi Noguchi ,  Atsushi Yamaguchi

发明人： Kei Hirata ,  Kiyoshi Noguchi ,  Atsushi Yamaguchi

IPC分类号： G11B5/127

CPC分类号： G11B5/3163 ,  G11B5/3143 ,  Y10T29/49021 ,  Y10T29/49048

摘要： The present invention provides a thin film magnetic head capable of satisfying both assurance of recording performance and assurance of reproduction performance. In the case where a lower magnetic layer is formed of an iron cobalt alloy (for example, Fe65Co35) which contains iron in a range of 60 at % to 80 at % and has extremely high saturation magnetic flux density of 2.4 T or higher, a head isolation layer formed of ruthenium (Ru) is provided between the lower magnetic layer and an upper read shield layer portion. As compared with the case where the head isolation layer is not provided between the lower magnetic layer and the upper read shield layer portion, the strength of a recording magnetic field increases and a reproduction output of an MR element is stabilized.

摘要翻译： 本发明提供了能够满足记录性能的保证和再现性能的保证的薄膜磁头。 在下面的磁性层由铁含量在60％至80％范围内的铁钴合金（例如，Fe 65 N 3+ 35）形成的情况下 at％，并且具有2.4T以上的极高饱和磁通密度，在下磁性层和上部读屏蔽层部分之间设置由钌（Ru）形成的磁头隔离层。 与在下部磁性层和上部读取屏蔽层部分之间没有设置磁头隔离层的情况相比，记录磁场的强度增加，MR元件的再现输出稳定。