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11. 发明申请

US20080291579A1 METHOD FOR TESTING NOISE OF THIN-FILM MAGNETIC HEAD, AND MAGNETIC DISK DRIVE APPARATUS WITH NOISE TESTING FUNCTION 有权
标题翻译：用于测试薄膜磁头的噪声的方法和具有噪声测试功能的磁盘驱动装置
公开(公告)号：US20080291579A1
公开(公告)日：2008-11-27
申请号：US11753836
申请日：2007-05-25
申请人： Takumi Uesugi , Takeo Kagami , Tetsuro Sasaki , Kei Hirata , Masaru Hirose , Chi Man Lee , Kwok Piu Tso
发明人： Takumi Uesugi , Takeo Kagami , Tetsuro Sasaki , Kei Hirata , Masaru Hirose , Chi Man Lee , Kwok Piu Tso
IPC分类号： G11B5/33
CPC分类号： G11B5/455 , G11B5/3189 , G11B5/3903
摘要： A noise-testing method for a thin-film magnetic head with an MR read head element and a heating unit capable of applying a heat and a stress to the MR read head element, includes a step of applying alternately and discontinuously with each other an electrical power having a first level and an electrical power having a second level higher than the first level to the heating unit, and a step of evaluating the thin-film magnetic head by measuring a noise output or noise outputs obtained from the MR read head element when the electrical power or the electrical powers are applied to the heating unit.
摘要翻译：具有MR读取头元件的薄膜磁头和能够向MR读取头元件施加热和应力的加热单元的噪声测试方法包括以下步骤：交替地和不连续地施加电气具有第一电平的功率和具有比加热单元的第一电平高的第二电平的电力;以及通过测量从MR读取头元件获得的噪声输出或噪声输出来评估薄膜磁头的步骤，电力或电力被施加到加热单元。

12. 发明申请

US20090323222A1 Thin film magnetic head, magnetic head slider, head gimbal assembly, head arm assembly, magnetic disk device and method of manufacturing thin film magnetic head 有权
标题翻译：薄膜磁头，磁头滑块，头万向架组件，头臂组件，磁盘装置及制造薄膜磁头的方法
公开(公告)号：US20090323222A1
公开(公告)日：2009-12-31
申请号：US12216162
申请日：2008-06-30
申请人： Kei Hirata , Kazuki Sato , Yohei Koyanagi , Takayasu Kanaya , Takeo Kagami
发明人： Kei Hirata , Kazuki Sato , Yohei Koyanagi , Takayasu Kanaya , Takeo Kagami
IPC分类号： G11B5/48 , G11B5/33
CPC分类号： G11B5/398 , G11B5/3166 , G11B5/3169 , G11B5/3173 , G11B5/3932
摘要： In manufacturing the thin film magnetic head, the rear end face of the MR element and the rear end face of a resistive film pattern are determined with high precision using a mask pattern, in which a first opening and a second opening are collectively formed. The first and second openings are located side by side in a track-width direction. The first opening includes a first edge extending across the MR film in the track-width direction, and the second opening includes a second edge located at a given interval, as measured in a direction orthogonal to the track-width direction, from the first edge, and extending in the track-width direction. In the step of polishing for forming a magnetic-recording-medium-facing-surface, the amount of polishing is determined by monitoring the resistance change of the resistive film pattern, thereby reducing the dimension errors in the MR height when manufacturing the MR element.
摘要翻译：在制造薄膜磁头时，使用其中共同形成第一开口和第二开口的掩模图案，以高精度确定MR元件的后端面和电阻膜图案的后端面。第一和第二开口沿着轨道宽度方向并排设置。第一开口包括在轨道宽度方向上跨过MR膜延伸的第一边缘，并且第二开口包括位于沿与轨道宽度方向正交的方向上测量的给定间隔的第二边缘，从第一边缘并沿轨道宽度方向延伸。在用于形成面向磁记录介质的表面的抛光步骤中，通过监视电阻膜图案的电阻变化来确定抛光量，从而在制造MR元件时减小MR高度的尺寸误差。

13. 发明授权

US08427790B2 Thin film magnetic head having similarly structured resistive film pattern and magnetic bias layer 有权
标题翻译：具有类似结构的电阻膜图案和磁偏置层的薄膜磁头
公开(公告)号：US08427790B2
公开(公告)日：2013-04-23
申请号：US12216162
申请日：2008-06-30
申请人： Kei Hirata , Kazuki Sato , Yohei Koyanagi , Takayasu Kanaya , Takeo Kagami
发明人： Kei Hirata , Kazuki Sato , Yohei Koyanagi , Takayasu Kanaya , Takeo Kagami
IPC分类号： G11B5/39
CPC分类号： G11B5/398 , G11B5/3166 , G11B5/3169 , G11B5/3173 , G11B5/3932
摘要： A thin film magnetic head includes a magnetoresistive element having a recording-medium-facing-surface which is to be faced with a magnetic recording medium; a magnetic bias layer located on a side opposite to the recording-medium-facing-surface of the magnetoresistive element, and applying a bias magnetic field to the magnetoresistive element in a direction orthogonal to the recording-medium-facing-surface; and a resistive film pattern having the recording-medium-facing-surface, the resistive film pattern being located side by side with the magnetoresistive element in a track-width direction.
摘要翻译：薄膜磁头包括具有面向磁记录介质的记录介质面对表面的磁阻元件; 位于与所述磁阻元件的记录介质相对表面相对的一侧的磁偏置层，并且在与所述记录介质相对表面正交的方向上向所述磁阻元件施加偏置磁场; 以及具有记录介质面向表面的电阻膜图案，电阻膜图案与磁阻元件沿轨道宽度方向并排定位。

14. 发明申请

US20070279803A1 THIN-FILM MAGNETIC HEAD, HEAD GIMBAL ASSEMBLY, AND HARD DISK SYSTEM 有权
标题翻译：薄膜磁头，头盖组件和硬盘系统
公开(公告)号：US20070279803A1
公开(公告)日：2007-12-06
申请号：US11756134
申请日：2007-05-31
申请人： Kei Hirata , Tetsuya Roppongi , Kiyoshi Noguchi
发明人： Kei Hirata , Tetsuya Roppongi , Kiyoshi Noguchi
IPC分类号： G11B5/147
CPC分类号： G11B5/1278 , B82Y10/00 , G11B5/11 , G11B5/3116 , G11B5/3146 , G11B5/743
摘要： The invention provides a thin-film magnetic head wherein the combined release angle Φ for a dominant recording magnetic field generated from a magnetic pole layer toward a patterned media for the purpose of recording magnetic information is set to within an angle range of 35° to 65° with respect to a patterned media surface. It is thus possible to invert, with efficiency and reliability, the directions of magnetization of isolate bits lined up on the patterned media for high-density recording.
摘要翻译：本发明提供了一种薄膜磁头，其中用于记录磁信息的从磁极层向图案化介质产生的主要记录磁场的组合释放角Phi设定在35°至65°的角度范围内 °相对于图案化介质表面。因此，可以以效率和可靠性反转排列在图案化介质上的高密度记录的隔离位的磁化方向。

15. 发明授权

US07872831B2 Thin-film magnetic head having a recording head portion configured to record magnetic information on a patterned media, head gimbal assembly, and hard disk system 有权
标题翻译：具有记录头部分的薄膜磁头被配置为在图案化介质，磁头万向节组件和硬盘系统上记录磁信息
公开(公告)号：US07872831B2
公开(公告)日：2011-01-18
申请号：US11756134
申请日：2007-05-31
申请人： Kei Hirata , Tetsuya Roppongi , Kiyoshi Noguchi
发明人： Kei Hirata , Tetsuya Roppongi , Kiyoshi Noguchi
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , B82Y10/00 , G11B5/11 , G11B5/3116 , G11B5/3146 , G11B5/743
摘要： The invention provides a thin-film magnetic head wherein the combined release angle Φ for a dominant recording magnetic field generated from a magnetic pole layer toward a patterned media for the purpose of recording magnetic information is set to within an angle range of 35° to 65° with respect to a patterned media surface. It is thus possible to invert, with efficiency and reliability, the directions of magnetization of isolate bits lined up on the patterned media for high-density recording.
摘要翻译：本发明提供了一种薄膜磁头，其中用于记录磁信息的从磁极层向图案化介质产生的主要记录磁场的组合释放角Φ设定在35°至65°的角度范围内 °相对于图案化介质表面。因此，可以以效率和可靠性反转排列在图案化介质上的高密度记录的隔离位的磁化方向。

16. 发明授权

US08964514B2 Plasmon generator and thermally-assisted magnetic recording head having the same 有权
标题翻译：等离子体发生器和具有相同功能的热辅助磁记录头
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。

17. 发明授权

US08605387B2 Thermally-assisted magnetic recording head including a magnetic pole and a heating element 有权
标题翻译：包括磁极和加热元件的热辅助磁记录头
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。

18. 发明授权

US08570843B2 Thermally assisted magnetic head, magnetic head device and magnetic recording/reproducing apparatus including a recording element and a near-field light generating element 有权
标题翻译：热辅助磁头，磁头装置和包括记录元件和近场光产生元件的磁记录/再现装置
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。

19. 发明授权

US07463449B2 Magnetic head for perpendicular magnetic recording, head gimbal assembly, head arm assembly and magnetic disk drive 有权
标题翻译：用于垂直磁记录的磁头，磁头万向架组件，磁头臂组件和磁盘驱动器
公开(公告)号：US07463449B2
公开(公告)日：2008-12-09
申请号：US11266289
申请日：2005-11-04
申请人： Kei Hirata , Atsushi Yamaguchi , Tetsuya Roppongi , Kiyoshi Noguchi
发明人： Kei Hirata , Atsushi Yamaguchi , Tetsuya Roppongi , Kiyoshi Noguchi
IPC分类号： G11B5/31 , G11B5/127
CPC分类号： G11B5/1278 , G11B5/3113 , G11B5/3116
摘要： A pole layer incorporate a track width defining and a wide portion. A material forming the pole layer is an alloy whose major elements are iron and nickel. In the alloy, where the proportions of iron and nickel with respect to the total of iron and nickel are indicated as (100−M) weight % and M weight %, respectively, M is greater than 0 and smaller than or equal to 10. The internal stress of the pole layer is a tensile stress. The magnetostriction constant of the material forming the pole layer is positive. Where the anisotropy field of the pole layer is Hk (A/m), the magnetostriction constant of the material forming the pole layer is λ(×10−6), and the internal stress of the pole layer is σ (MPa), the value of Hk/(λ×σ) is greater than 0.01 and smaller than 0.2.
摘要翻译：极层包含限定的轨道宽度和宽的部分。形成极层的材料是其主要元素是铁和镍的合金。在合金中，铁和镍相对于铁和镍总量的比例分别表示为（100-M）重量％和M重量％，M大于0且小于或等于10。极层的内应力是拉伸应力。形成极层的材料的磁致伸缩常数为正。在极层的各向异性场为Hk（A / m）的情况下，形成极层的材料的磁致伸缩常数为λ（x10-6），极层的内应力为σ（MPa）的Hk /（lambdaxsigma）大于0.01且小于0.2。

20. 发明授权

US08503270B1 Thermally-assisted magnetic recording head including a plasmon generator and a magnetic pole 有权
标题翻译：包括等离子体发生器和磁极的热辅助磁记录头
公开(公告)号：US08503270B1
公开(公告)日：2013-08-06
申请号：US13456734
申请日：2012-04-26
申请人： Keita Kawamori , Kei Hirata , Tetsuya Roppongi
发明人： Keita Kawamori , Kei Hirata , Tetsuya Roppongi
IPC分类号： G11B11/00 , G11B5/02
CPC分类号： G11B5/3133 , G11B5/314 , G11B2005/0021
摘要： A thermally-assisted magnetic recording head includes a magnetic pole, a waveguide, and a plasmon generator. The plasmon generator and the magnetic pole are disposed to align in the direction of travel of a magnetic recording medium. The thermally-assisted magnetic recording head further includes an amorphous layer made of a nonmagnetic metal, the amorphous layer being interposed between and in contact with the plasmon generator and the magnetic pole.
摘要翻译：热辅助磁记录头包括磁极，波导和等离子体发生器。等离子体发生器和磁极设置成在磁记录介质的行进方向上对齐。热辅助磁记录头还包括由非磁性金属制成的非晶层，该非晶层介于等离子体发生器和磁极之间并与其接触。

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