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1. 发明授权

US07145750B2 Perpendicular magnetic recording head and perpendicular magnetic recording and reproducing system 有权
公开(公告)号：US07145750B2
公开(公告)日：2006-12-05
申请号：US10335884
申请日：2003-01-03
申请人： Hisashi Kimura , Kazuhiro Nakamoto , Yoshiaki Kawato , Nobuo Yoshida
发明人： Hisashi Kimura , Kazuhiro Nakamoto , Yoshiaki Kawato , Nobuo Yoshida
IPC分类号： G11B5/127
CPC分类号： G11B5/3967 , G11B5/09 , G11B5/1278 , G11B5/187 , G11B5/313 , G11B2005/0029
摘要： There is provided a perpendicular magnetic recording and reproducing system in which the overwrite erase ratio of a perpendicular magnetic head has been improved to prevent the deterioration of an overwrite property. In the perpendicular magnetic head, a third magnetic pole composed of a soft magnetic layer is formed on the leading side of a recording magnetic pole via a non-magnetic layer, thereby reducing magnetic interference from magnetization on a medium with the recording magnetic pole and preventing the deterioration of the overwrite property.

2. 发明授权

US07405905B2 Perpendicular magnetic recording and reproducing head 失效
标题翻译：垂直磁记录和再现头
公开(公告)号：US07405905B2
公开(公告)日：2008-07-29
申请号：US11517468
申请日：2006-09-08
申请人： Hisashi Kimura , Kazuhiro Nakamoto , Yoshiaki Kawato , Nobuo Yoshida
发明人： Hisashi Kimura , Kazuhiro Nakamoto , Yoshiaki Kawato , Nobuo Yoshida
IPC分类号： G11B5/147
CPC分类号： G11B5/3967 , G11B5/09 , G11B5/1278 , G11B5/187 , G11B5/313 , G11B2005/0029
摘要： There is provided a perpendicular magnetic recording and reproducing system in which the overwrite erase ratio of a perpendicular magnetic head has been improved to prevent the deterioration of an overwrite property. In the perpendicular magnetic head, a third magnetic pole composed of a soft magnetic layer is formed on the leading side of a recording magnetic pole via a non-magnetic layer, thereby reducing magnetic interference from magnetization on a medium with the recording magnetic pole and preventing the deterioration of the overwrite property.
摘要翻译：提供了一种垂直磁记录和再现系统，其中改进了垂直磁头的重写擦除比以防止覆盖性能的劣化。在垂直磁头中，通过非磁性层在记录磁极的前端形成由软磁性层构成的第三磁极，从而减少了具有记录磁极的介质上的磁化的磁干扰，并防止覆盖属性的恶化。

3. 发明申请

US20070002492A1 Perpendicular magnetic recording head and perpendicular magnetic recording and reproducing system 失效
标题翻译：垂直磁记录头和垂直磁记录和再现系统
公开(公告)号：US20070002492A1
公开(公告)日：2007-01-04
申请号：US11517468
申请日：2006-09-08
申请人： Hisashi Kimura , Kazuhiro Nakamoto , Yoshiaki Kawato , Nobuo Yoshida
发明人： Hisashi Kimura , Kazuhiro Nakamoto , Yoshiaki Kawato , Nobuo Yoshida
IPC分类号： G11B5/127
CPC分类号： G11B5/3967 , G11B5/09 , G11B5/1278 , G11B5/187 , G11B5/313 , G11B2005/0029
摘要： There is provided a perpendicular magnetic recording and reproducing system in which the overwrite erase ratio of a perpendicular magnetic head has been improved to prevent the deterioration of an overwrite property. In the perpendicular magnetic head, a third magnetic pole composed of a soft magnetic layer is formed on the leading side of a recording magnetic pole via a non-magnetic layer, thereby reducing magnetic interference from magnetization on a medium with the recording magnetic pole and preventing the deterioration of the overwrite property.
摘要翻译：提供了一种垂直磁记录和再现系统，其中改进了垂直磁头的重写擦除比以防止覆盖性能的劣化。在垂直磁头中，通过非磁性层在记录磁极的前端形成由软磁性层构成的第三磁极，从而减少了具有记录磁极的介质上的磁化的磁干扰，并防止覆盖属性的恶化。

4. 发明授权

US07054106B2 Magnetic head and magnetic storage apparatus 失效
标题翻译：磁头和磁存储设备
公开(公告)号：US07054106B2
公开(公告)日：2006-05-30
申请号：US10354989
申请日：2003-01-31
申请人： Kazue Kudo , Yoshiaki Kawato , Kazuhiro Nakamoto , Nobuo Yoshida , Kimitoshi Etoh
发明人： Kazue Kudo , Yoshiaki Kawato , Kazuhiro Nakamoto , Nobuo Yoshida , Kimitoshi Etoh
IPC分类号： G11B5/147
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/024 , G11B5/313 , G11B5/3156 , G11B5/3163 , G11B5/3967 , G11B5/465 , G11B2005/0008 , G11B2005/0013 , G11B2005/3996
摘要： Disclosed herein is a magnetic head for perpendicular recording in which the main magnetic pole has reduced remanent magnetization and is less liable to cause erasure after recording. These characteristic properties were realized by constructing the magnetic head such that the recording magnetic pole and the yoke are separate from each other and the main magnetic pole is formed from a material with a high saturation magnetic flux density and the yoke is formed from a material having a negative magnetostriction constant.
摘要翻译：这里公开了一种用于垂直记录的磁头，其中主磁极具有降低的剩磁，并且在记录之后不易引起擦除。这些特性是通过构造磁头来实现的，使得记录磁极和磁轭彼此分离，并且主磁极由具有高饱和磁通密度的材料形成，并且磁轭由具有负磁致伸缩常数。

5. 发明授权

US06693774B2 Magnetoresistive sensor and magnetic storage apparatus 失效
标题翻译：磁阻传感器和磁存储设备
公开(公告)号：US06693774B2
公开(公告)日：2004-02-17
申请号：US09803032
申请日：2001-03-12
申请人： Katsuro Watanabe , Hiromasa Takahashi , Nobuo Yoshida , Takashi Kawabe , Kazuhiro Nakamoto
发明人： Katsuro Watanabe , Hiromasa Takahashi , Nobuo Yoshida , Takashi Kawabe , Kazuhiro Nakamoto
IPC分类号： G11B5127
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3909 , G11B5/40 , G11B2005/3996
摘要： A magnetoresistive sensor which, despite a narrow reproducing shield gap, affords high resolution and high reproducing output because of its structure and is able to minimize the amount of sense current leaking into the shield layer through the gap layer. A magnetic storage apparatus suitable for high-density recording is provided with a magnetic head having said magnetoresistive sensor. The structure is characterized in that at least either of the lower shield layer or upper shield layer is partly or entirely a magnetic layer which is a composite film composed of ferromagnetic metal and oxide, and an insulation protective film is arranged between the electrode film or longitudinal bias film and the magnetic film which is a composite film composed of ferromagnetic metal and oxide.
摘要翻译：尽管具有窄的再现屏蔽间隙，磁阻传感器由于其结构而提供高分辨率和高再现输出，并且能够使通过间隙层泄漏到屏蔽层中的感测电流的量最小化。适用于高密度记录的磁存储装置设置有具有所述磁阻传感器的磁头。该结构的特征在于，下屏蔽层或上屏蔽层中的至少一个部分或全部是作为由铁磁性金属和氧化物构成的复合膜的磁性层，绝缘保护膜设置在电极膜或纵向偏置膜和由铁磁性金属和氧化物构成的复合膜的磁性膜。

6. 发明授权

US07535675B2 Magnetic recording head with shaped pole 失效
标题翻译：带磁极的磁记录头和制造工艺
公开(公告)号：US07535675B2
公开(公告)日：2009-05-19
申请号：US11046356
申请日：2005-01-27
申请人： Hisashi Kimura , Nobuo Yoshida , Isao Nunokawa , Kimitoshi Etoh
发明人： Hisashi Kimura , Nobuo Yoshida , Isao Nunokawa , Kimitoshi Etoh
IPC分类号： G11B5/147 , G11B5/127
CPC分类号： G11B5/1278 , G11B5/3163 , Y10T29/49021
摘要： Embodiments of the invention provide a thin film magnetic recording head that can reduce the round portion of the track restriction part of the main pole and has excellent track width accuracy, as well as its fabrication method. In one embodiment, the main pole is etched in the following three processes. (1) An ion beam is injected into the substrate at an angle of about 50°±20° while vibrating the substrate horizontally within a range of about ±(30° to 150°) in a reference direction in which the ion beam is oriented from the medium to the air bearing surface. (2) The ion beam is injected into the substrate at an angle of about 60°±20° while vibrating the substrate around a predetermined angle of about 90° to 135° from a direction in which the ion beam is oriented from the medium to the air bearing surface. (3) The ion beam is injected into the substrate at an angle of about 60°±20° while vibrating the substrate horizontally at a predetermined angle within about ±45° around a predetermined angle within about −90° to −135° from a direction in which the ion beam is oriented from the medium to the air bearing surface.
摘要翻译：本发明的实施例提供一种薄膜磁记录头，其可以减小主极的轨道限制部分的圆形部分，并且具有优异的轨道宽度精度及其制造方法。在一个实施例中，主极在以下三个过程中被蚀刻。（1）离子束以约50°±20°的角度注入基板，同时在离子束取向的基准方向上在约±（30°〜150°）的范围内水平振动基板从介质到空气轴承表面。（2）离子束以大约60°±20°的角度注入到基片中，同时使离子束从介质取向的方向围绕约90°至135°的预定角度振动，空气轴承表面。（3）将离子束以大约60°±20°的角度注入到基片中，同时以大约±45°的预定角度水平地振动衬底，大约在-90°至-135°的预定角度离子束从介质定向到空气轴承表面的方向。

7. 发明申请

US20050162778A1 Magnetic recording head with shaped pole and fabrication process 失效
标题翻译：带磁极的磁记录头和制造工艺
公开(公告)号：US20050162778A1
公开(公告)日：2005-07-28
申请号：US11046356
申请日：2005-01-27
申请人： Hisashi Kimura , Nobuo Yoshida , Isao Nunokawa , Kimitoshi Etoh
发明人： Hisashi Kimura , Nobuo Yoshida , Isao Nunokawa , Kimitoshi Etoh
IPC分类号： G11B5/31 , G11B5/127 , G11B5/147
CPC分类号： G11B5/1278 , G11B5/3163 , Y10T29/49021
摘要： Embodiments of the invention provide a thin film magnetic recording head that can reduce the round portion of the track restriction part of the main pole and has excellent track width accuracy, as well as its fabrication method. In one embodiment, the main pole is etched in the following three processes. (1) An ion beam is injected into the substrate at an angle of about 50°±20° while vibrating the substrate horizontally within a range of about ±(30° to 150°) in a reference direction in which the ion beam is oriented from the medium to the air bearing surface. (2) The ion beam is injected into the substrate at an angle of about 60°±20° while vibrating the substrate around a predetermined angle of about 90° to 135° from a direction in which the ion beam is oriented from the medium to the air bearing surface. (3) The ion beam is injected into the substrate at an angle of about 60°±20° while vibrating the substrate horizontally at a predetermined angle within about ±45° around a predetermined angle within about −90° to −135° from a direction in which the ion beam is oriented from the medium to the air bearing surface.
摘要翻译：本发明的实施例提供一种薄膜磁记录头，其可以减小主极的轨道限制部分的圆形部分，并且具有优异的轨道宽度精度及其制造方法。在一个实施例中，主极在以下三个过程中被蚀刻。（1）离子束以约50°±20°的角度注入基板，同时在离子束取向的基准方向上在约±（30°〜150°）的范围内水平振动基板从介质到空气轴承表面。（2）离子束以大约60°±20°的角度注入到基片中，同时使离子束从介质取向的方向围绕约90°至135°的预定角度振动，空气轴承表面。（3）将离子束以大约60°±20°的角度注入到基片中，同时以大约±45°的预定角度水平地振动衬底，大约在-90°至-155°的预定角度离子束从介质定向到空气轴承表面的方向。

8. 发明授权

US08537505B2 Magnetoresistive effect head having a free layer and a magnetic domain control layer that applies a magnetic field more strongly in an upper part of the free layer 有权
标题翻译：具有自由层和磁畴控制层的磁阻效应头，其在自由层的上部更强地施加磁场
公开(公告)号：US08537505B2
公开(公告)日：2013-09-17
申请号：US12784405
申请日：2010-05-20
申请人： Masato Shiimoto , Kan Yasui , Nobuo Yoshida , Hiroyuki Takazawa
发明人： Masato Shiimoto , Kan Yasui , Nobuo Yoshida , Hiroyuki Takazawa
IPC分类号： G11B5/39 , G11B5/11
CPC分类号： G11B5/3932 , B82Y25/00 , G01R33/093 , G01R33/098 , H01L43/08 , H01L43/10
摘要： According to one embodiment, a magnetoresistive effect head includes a lower magnetic shield provided on a substrate, a magnetoresistive effect film laminated from a pinned layer with a pinned direction of magnetization, an intermediate layer, a free layer having a varying direction of magnetization controlled by an applied external magnetic field, a magnetic domain control layer formed with an intervening insulation layer on both sides in a track width direction of the magnetoresistive effect film, an upper magnetic shield, and electrodes for directing sense current flow in a direction perpendicular to a film surface of the magnetoresistive effect film, wherein a magnetic field applied by the magnetic domain control layer to a region away from an ABS of the free layer is at least 1.4 times larger than a magnetic field applied by the magnetic domain control layer to a region near the ABS of the free layer.
摘要翻译：根据一个实施例，磁阻效应头包括设置在基板上的下磁屏蔽，从具有钉扎方向的钉扎层层压的磁阻效应膜，中间层，具有变化的磁化方向的自由层，施加的外部磁场，在磁阻效应膜的磁道宽度方向上在两侧形成有中间绝缘层的磁畴控制层，上磁屏蔽和用于引导垂直于膜的方向的感测电流的电极磁阻效应膜的表面，其中由磁畴控制层施加到远离自由层的ABS的区域的磁场比由磁畴控制层施加到接近的区域的磁场的至少大1.4倍 ABS的自由层。

9. 发明申请

US20120187079A1 METHOD FOR MANUFACTURING A MAGNETIC SENSOR HAVING A FLAT UPPER SHIELD 审中-公开
标题翻译：用于制造具有平坦上层屏蔽的磁传感器的方法
公开(公告)号：US20120187079A1
公开(公告)日：2012-07-26
申请号：US13010908
申请日：2011-01-21
申请人： Hideki Mashima , Nobuo Yoshida
发明人： Hideki Mashima , Nobuo Yoshida
IPC分类号： G11B5/127 , C23F1/00
CPC分类号： G11B5/398 , G01R33/098 , G11B5/3163 , G11B5/3912 , G11B5/3932
摘要： A method for manufacturing a magnetic sensor that has a flat upper shield. A sensor stack is formed with a sensor capping layer at its top and a first CMP stop layer over the sensor capping layer and a mask formed over the CMP stop layer. A hard bias layer and second CMP stop layer are deposited over the sensor stack, capping layer, first CMP stop layer and mask. A chemical mechanical polishing process is then performed to remove the mask, leaving a portion of the hard bias layer exposed between the first and second CMP stop layers. An ion milling is then performed to etch back the exposed portions of the hard magnetic bias layer. A reactive ion etching is then performed to remove the remaining first and second CMP top layers. An upper shield can then be formed on a substantially flat surface.
摘要翻译：一种制造具有平坦的上屏蔽的磁传感器的方法。传感器堆叠在其顶部形成有传感器覆盖层，并且在传感器覆盖层上方形成第一CMP停止层，并且在CMP停止层上形成掩模。在传感器堆叠，封盖层，第一CMP停止层和掩模上沉积硬偏压层和第二CMP停止层。然后执行化学机械抛光工艺以去除掩模，使得一部分硬偏压层暴露在第一和第二CMP停止层之间。然后进行离子铣削以蚀刻硬磁偏置层的暴露部分。然后执行反应离子蚀刻以去除剩余的第一和第二CMP顶层。然后可以在基本平坦的表面上形成上屏蔽。

10. 发明授权

US07881022B2 Magnetic head and method for fabricating the same 有权
标题翻译：磁头及其制造方法
公开(公告)号：US07881022B2
公开(公告)日：2011-02-01
申请号：US11788038
申请日：2007-04-17
申请人： Hisako Takei , Nobuo Yoshida , Hiroyuki Hoshiya , Taku Shintani
发明人： Hisako Takei , Nobuo Yoshida , Hiroyuki Hoshiya , Taku Shintani
IPC分类号： G11B5/39
CPC分类号： G01R33/093 , B82Y25/00 , G11B5/3163 , G11B5/398 , Y10T29/49021
摘要： Embodiments in accordance with the present invention provide a sensor to produce high output with a small track width. Particular embodiments include forming a magnetoresistive sensor of a read head to be substantially vertical in its upper portion and gently upwardly convexly curved in its lower portion.
摘要翻译：根据本发明的实施例提供一种用于产生具有小轨道宽度的高输出的传感器。具体实施例包括形成读头的磁阻传感器在其上部基本垂直并且在其下部中轻轻地向上凸起地弯曲。

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