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21. 发明申请

US20060028747A1 Stray field detector, magnetic disk drive, and method of head escaping 失效
标题翻译：杂散场检测器，磁盘驱动器和头部逃逸方法
公开(公告)号：US20060028747A1
公开(公告)日：2006-02-09
申请号：US11195202
申请日：2005-08-01
申请人： Reiko Arai , Takehiko Hamaguchi , Atsushi Kikugawa , Hideaki Maeda , Liping Shen , Mikio Suzuki
发明人： Reiko Arai , Takehiko Hamaguchi , Atsushi Kikugawa , Hideaki Maeda , Liping Shen , Mikio Suzuki
IPC分类号： G11B5/02 , G11B27/36
CPC分类号： G11B5/012 , G11B5/02 , G11B5/1278 , G11B5/3903 , G11B27/36 , G11B2005/0016 , G11B2005/0029 , G11B2220/20
摘要： Embodiments of the invention prevent demagnetization or degaussing of recorded magnetizations, even if a stray field is applied. In one embodiment, an output of a read head including a magneto-resistive effect element is inputted to a stray field detector through a DC amplifier and a DC filter. The stray field detector monitors dc components of the output from the read head, and escapes a head from above a magnetic recording medium.
摘要翻译：即使应用杂散场，本发明的实施例也防止记录磁化的退磁或消磁。在一个实施例中，包括磁阻效应元件的读出头的输出通过DC放大器和DC滤波器输入到杂散场检测器。杂散场检测器监测来自读头的输出的直流分量，并从磁记录介质的上方排出头。

22. 发明授权

US06947316B2 Magnetoresistive sensor including magnetic domain control layers having high electric resistivity, magnetic head and magnetic disk apparatus 失效
标题翻译：磁阻传感器包括具有高电阻率的磁畴控制层，磁头和磁盘装置
公开(公告)号：US06947316B2
公开(公告)日：2005-09-20
申请号：US10755285
申请日：2004-01-13
申请人： Hiromasa Takahashi , Reiko Arai , Susumu Soeya
发明人： Hiromasa Takahashi , Reiko Arai , Susumu Soeya
IPC分类号： G01R33/09 , G11B5/127 , G11B5/33 , G11B5/39 , H01L43/08 , G11C11/00
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/09 , G11B5/3903 , G11B5/3909 , G11B5/3932 , G11B5/3967 , G11B2005/3996
摘要： There are provided a magnetoresistive sensor of the type of flowing a signal sensing current perpendicular to the plane to improve resolution at reproducing a signal, a magnetic head using the magnetoresistive sensor, and a magnetic disk apparatus.A magnetoresistive sensor comprising a substrate, a pair of magnetic shield layers consisting of a lower magnetic shield layer and an upper magnetic shield layer, a magnetoresistive sensor layer, disposed between the pair of magnetic shield layers, an electrode terminal for flowing a signal current perpendicular to the plane of the magnetoresistive sensor layer, and magnetic domain control layers for controlling Barkhausen noise of the magnetoresistive sensor layer, wherein the magnetic domain control layers disposed in contact with opposite ends of the magnetoresistive sensor layer consist of a material having high electric resistivity and with a specific resistance not less than 10 mΩcm so as to give the magnetoresistive sensor having excellent reproducing resolution. The sensor is used to provide a magnetic head having excellent reproducing resolution and a magnetic disk apparatus.
摘要翻译：提供了一种磁阻传感器，其类型是使垂直于该平面的信号感测电流流动，以改善在再现信号时的分辨率，使用磁阻传感器的磁头和磁盘装置。一种磁阻传感器，包括基板，由下磁屏蔽层和上磁屏蔽层组成的一对磁屏蔽层，设置在一对磁屏蔽层之间的磁阻传感器层，用于垂直于信号电流流动的电极端子磁阻传感器层的平面和用于控制磁阻传感器层的巴克豪森噪声的磁畴控制层，其中与磁阻传感器层的相对端接触设置的磁畴控制层由具有高电阻率的材料组成，具有不小于10mOggacm的电阻率，以使具有优异再现分辨率的磁阻传感器。传感器用于提供具有优异的再现分辨率的磁头和磁盘装置。

23. 发明授权

US5051856A Thin film magnetic head with mixed crystal structures 失效
标题翻译：具有混晶结构的薄膜磁头
公开(公告)号：US5051856A
公开(公告)日：1991-09-24
申请号：US420478
申请日：1989-10-12
申请人： Shinji Narishige , Katsuya Mitsuoka , Takao Imagawa , Kouichi Nishioka , Akira Kumagai , Masaaki Sano , Yutaka Sugita , Reiko Arai , Tetsuo Kobayashi , Toshihiro Yoshida , Yokuo Saitoh , Yoshikazu Tsuji , Masaaki Hayashi
发明人： Shinji Narishige , Katsuya Mitsuoka , Takao Imagawa , Kouichi Nishioka , Akira Kumagai , Masaaki Sano , Yutaka Sugita , Reiko Arai , Tetsuo Kobayashi , Toshihiro Yoshida , Yokuo Saitoh , Yoshikazu Tsuji , Masaaki Hayashi
IPC分类号： G11B5/31 , H01F10/32
CPC分类号： B82Y25/00 , G11B5/31 , H01F10/32
摘要： A thin film magnetic head has magnetic films, at least one of which is composed of a material containing major components of nickel and iron and one or more element from nitrogen, oxygen and carbon and has two of face-centered cubic system and body-centered tetragonal system, whereby thin film magnetic heads having a high permeability and low coercive force can be provided.
摘要翻译：薄膜磁头具有磁性膜，其中至少一个由含有镍和铁的主要成分的材料和来自氮，氧和碳的一种或多种元素组成，并且具有两个面心立方体系和以身体为中心可以提供具有高磁导率和低矫顽力的薄膜磁头。

24. 发明授权

US08507115B2 Perpendicular magnetic recording medium 有权
标题翻译：垂直磁记录介质
公开(公告)号：US08507115B2
公开(公告)日：2013-08-13
申请号：US12559365
申请日：2009-09-14
申请人： Reiko Arai , Niroyuki Nakagawa
发明人： Reiko Arai , Niroyuki Nakagawa
IPC分类号： G11B5/667
CPC分类号： G11B5/732 , G11B5/7325 , G11B5/82
摘要： According to one embodiment, a perpendicular magnetic recording medium includes a soft magnetic underlayer having an amorphous structure or a microcrystalline structure, a first seed layer comprised of a magnetic material having an fcc crystal structure including a CoFe alloy formed on a substrate side, and a second seed layer formed on the first seed layer, the second seed layer comprised of a nonmagnetic material having an fcc crystal structure including a NiW alloy. The medium also includes an intermediate layer comprised of Ru or an alloy thereof, a magnetic recording layer, and a protective layer, wherein the layers are sequentially stacked on a substrate in the foregoing order and the protective layer is closer to the substrate than the soft magnetic underlayer. Other embodiments of magnetic recording media, and methods of fabrication, are also described.
摘要翻译：根据一个实施例，垂直磁记录介质包括具有非晶结构或微晶结构的软磁性底层，第一晶种层由具有在基板侧形成的CoFe合金的fcc晶体结构的磁性材料构成，以及形成在第一籽晶层上的第二晶种层，第二晶种层由具有包含NiW合金的fcc晶体结构的非磁性材料构成。该介质还包括由Ru或它们的合金构成的中间层，磁记录层和保护层，其中按照上述顺序将层依次堆叠在基板上，并且保护层比软件更靠近基板磁性底层。还描述了磁记录介质的其它实施例和制造方法。

25. 发明申请

US20080113221A1 Perpendicular magnetic recording medium and magnetic storage apparatus using the same 有权
标题翻译：垂直磁记录介质及使用其的磁存储装置
公开(公告)号：US20080113221A1
公开(公告)日：2008-05-15
申请号：US11985310
申请日：2007-11-13
申请人： Yoshiyuki Hirayama , Ichiro Tamai , Reiko Arai
发明人： Yoshiyuki Hirayama , Ichiro Tamai , Reiko Arai
IPC分类号： G11B5/33
CPC分类号： G11B5/65 , G11B5/7325 , G11B5/851 , Y10T428/11
摘要： Embodiments in accordance with the present invention help to obtain a perpendicular magnetic recording medium having a granular structure, excellent recording/reproducing properties, and excellent durability. According to one embodiment, a recording layer includes a layer which has crystal grains mainly composed of cobalt and crystal grain boundaries mainly composed of the oxide; the oxygen content of the recoding layer is changed in the film thickness direction; the oxygen content in the area in the vicinity of the interface between the recording layer and the intermediate layer is made lower than the oxygen content in the area in the vicinity of the center of the recording layer; and the oxygen content in the area in the vicinity of the interface between the recording layer and the protective layer is made lower than the oxygen content in the area in the vicinity of the center of the recording layer.
摘要翻译：根据本发明的实施例有助于获得具有颗粒结构的良好的记录/再现性能和优异的耐久性的垂直磁记录介质。根据一个实施例，记录层包括主要由钴构成的晶粒和主要由氧化物构成的晶界的层; 记录层的氧含量在膜厚方向上变化; 记录层和中间层之间的界面附近的区域中的氧含量低于记录层中心附近的区域中的氧含量; 并且将记录层和保护层之间的界面附近的区域中的氧含量设定得低于记录层中心附近的区域中的氧含量。

26. 发明申请

US20060127703A1 Perpendicular magnetic recording medium for high density recording and manufacturing of the same 失效
标题翻译：用于高密度记录和制造的垂直磁记录介质
公开(公告)号：US20060127703A1
公开(公告)日：2006-06-15
申请号：US11295005
申请日：2005-12-05
申请人： Ikuko Takekuma , Reiko Arai , Yoko Ogawa , Yoshiyuki Hirayama , Yuzuru Hosoe , Tomio Iwasaki
发明人： Ikuko Takekuma , Reiko Arai , Yoko Ogawa , Yoshiyuki Hirayama , Yuzuru Hosoe , Tomio Iwasaki
IPC分类号： G11B5/66 , C23C14/00
CPC分类号： C23C14/568 , C23C14/025 , C23C14/0658 , C23C14/0688 , C23C14/584 , G11B5/65 , G11B5/732
摘要： Embodiments of the invention provide a medium which provides high media S/N and good corrosion resistance. According to one embodiment, in a perpendicular magnetic recording medium at least comprising a soft-magnetic underlayer, a seed layer, an intermediate layer, a magnetic recording layer and an overcoat layer which are stacked over a substrate in order, the magnetic recording layer has a granular structure which consists of many columnar grains of CoCrPt alloy and a grain boundary layer containing an oxide, the seed layer is made of TaNi alloy or TaTi alloy and the intermediate layer is made of Ru or Ru alloy which contains about 80 at. % Ru or more.
摘要翻译：本发明的实施方案提供了提供高介质S / N和良好耐腐蚀性的介质。根据一个实施例，在依次层叠在基板上的至少包括软磁性底层，种子层，中间层，磁记录层和覆盖层的垂直磁记录介质中，磁记录层具有由CoCrPt合金的许多柱状晶粒和含有氧化物的晶界层组成的粒状结构，种子层由TaNi合金或TaTi合金制成，中间层由含有约80at的Ru或Ru合金制成。％Ru或更多。

27. 发明申请

US20050254182A1 Magnetoresistive sensor including magnetic domain control layers having high electric resistivity, magnetic head and magnetic disk apparatus 失效
标题翻译：磁阻传感器包括具有高电阻率的磁畴控制层，磁头和磁盘装置
公开(公告)号：US20050254182A1
公开(公告)日：2005-11-17
申请号：US11188695
申请日：2005-07-26
申请人： Hiromasa Takahashi , Reiko Arai , Susumu Soeya
发明人： Hiromasa Takahashi , Reiko Arai , Susumu Soeya
IPC分类号： G01R33/09 , G11B5/127 , G11B5/33 , G11B5/39 , H01L43/08
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/09 , G11B5/3903 , G11B5/3909 , G11B5/3932 , G11B5/3967 , G11B2005/3996
摘要： A magnetoresistive sensor of the type of flowing a signal sensing current perpendicular to the plane, a magnetic head using the magnetoresistive sensor, and a magnetic disk apparatus, comprising a substrate, a pair of magnetic shield layers consisting of a lower magnetic shield layer and an upper magnetic shield layer, a magnetoresistive sensor layer, disposed between the pair of magnetic shield layers, an electrode terminal for flowing a signal current perpendicular to the plane of the magnetoresistive sensor layer, and magnetic domain control layers for controlling Barkhausen noise of the magnetoresistive sensor layer, the magnetic domain control layers being disposed in contact with opposite ends of the magnetoresistive sensor layer consist of a material having high electric resistivity and with a specific resistance not less than 10 mΩcm.
摘要翻译：使垂直于该平面的信号感应电流的类型的磁阻传感器，使用磁阻传感器的磁头和包括基板的磁盘装置，由下磁屏蔽层和上磁屏蔽层，磁阻传感器层，设置在一对磁屏蔽层之间，用于使垂直于磁阻传感器层的平面的信号电流流过的电极端子和用于控制磁阻传感器的巴克豪森噪声的磁畴控制层层，与磁阻传感器层的相对端接触的磁畴控制层由具有高电阻率且电阻率不小于10mOggacm的材料组成。

28. 发明授权

US06249405B1 Magnetic head including magnetoresistive element 失效
标题翻译：磁头包括磁阻元件
公开(公告)号：US06249405B1
公开(公告)日：2001-06-19
申请号：US09588183
申请日：2000-06-07
申请人： Hiroyuki Hoshiya , Katsuya Mitsuoka , Masaaki Sano , Reiko Arai , Susumu Soeya , Hiroshi Fukui , Moriaki Fuyama , Fumio Sato
发明人： Hiroyuki Hoshiya , Katsuya Mitsuoka , Masaaki Sano , Reiko Arai , Susumu Soeya , Hiroshi Fukui , Moriaki Fuyama , Fumio Sato
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/09 , G11B5/3903 , G11B5/3909 , G11B5/3919 , G11B5/3967 , G11B5/398 , G11B5/4886 , G11B2005/3996
摘要： A magnetic storage/read system includes a recording medium having tracks, and a magnetic head, including a magnetoresistive element, which reads a magnetic field from the recording medium. The magnetic storage/read system satisfies a relationship of d≦(12.5×103)/Tr where d is a height, expressed in &mgr;m, of the magnetoresistive element in a direction perpendicular to a plane of the recording medium, and Tr is a track density, expressed in tracks per inch, of the tracks of the recording medium. The magnetoresistive element may include a first antiferromagnetic film; a first magnetic film having a magnetization direction which is fixed by magnetic coupling with the first antiferromagnetic film; a second antiferromagnetic film; a second magnetic film having a magnetization direction which is fixed by magnetic coupling with the second antiferromagnetic film; a third magnetic film having a magnetization direction which is able to rotate in response to an applied magnetic field; a first nonmagnetic conductive film disposed between the first magnetic film and the third magnetic film; and a second nonmagnetic conductive film disposed between the second magnetic film and the third magnetic film; wherein the third magnetic film is disposed between the first nonmagnetic conductive film and the second nonmagnetic conductive film, the first magnetic film is disposed between the first antiferromagnetic film and the first nonmagnetic conductive film, and the second magnetic film is disposed between the second antiferromagnetic film and the second nonmagnetic conductive film.
摘要翻译：磁存储/读取系统包括具有轨道的记录介质和包括磁阻元件的磁头，其从记录介质读取磁场。磁存储/读取系统满足d <=（12.5×103）/ Tr的关系，其中d是在垂直于记录介质的平面的方向上的磁阻元件以mum表示的高度，Tr是轨道密度，以每英寸的轨道表示的记录介质的轨道。磁阻元件可以包括第一反铁磁膜; 具有通过与第一反铁磁膜的磁耦合固定的磁化方向的第一磁性膜; 第二反铁磁膜; 具有通过与第二反铁磁膜的磁耦合固定的磁化方向的第二磁性膜; 具有能够响应于所施加的磁场而能够旋转的磁化方向的第三磁性膜; 设置在第一磁性膜和第三磁性膜之间的第一非磁性导电膜; 以及设置在所述第二磁性膜和所述第三磁性膜之间的第二非磁性导电膜; 其中所述第三磁性膜设置在所述第一非磁性导电膜和所述第二非磁性导电膜之间，所述第一磁性膜设置在所述第一反铁磁性膜与所述第一非磁性导电膜之间，所述第二磁性膜设置在所述第二反铁磁性膜和第二非磁性导电膜。

29. 发明授权

US6125019A Magnetic head including magnetoresistive element 失效
标题翻译：磁头包括磁阻元件
公开(公告)号：US6125019A
公开(公告)日：2000-09-26
申请号：US366595
申请日：1999-08-03
申请人： Hiroyuki Hoshiya , Katsuya Mitsuoka , Masaaki Sano , Reiko Arai , Susumu Soeya , Hiroshi Fukui , Moriaki Fuyama , Fumio Sato
发明人： Hiroyuki Hoshiya , Katsuya Mitsuoka , Masaaki Sano , Reiko Arai , Susumu Soeya , Hiroshi Fukui , Moriaki Fuyama , Fumio Sato
IPC分类号： G11B5/012 , G11B5/09 , G11B5/39 , G11B5/48 , H01F10/06
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/09 , G11B5/3903 , G11B5/3909 , G11B5/3919 , G11B5/3967 , G11B5/398 , G11B5/4886 , G11B2005/3996
摘要： A magnetic head includes a magnetoresistive element. The magnetoresistive element includes a first magnetic film having a fixed magnetization direction, a second magnetic film having a fixed magnetization direction, a third magnetic film having a rotatable magnetization direction, a first nonmagnetic film, and a second nonmagnetic film. The first magnetic film, the first nonmagnetic film, the third magnetic film, the second nonmagnetic film, and the second magnetic film are stacked in this order.
摘要翻译：磁头包括磁阻元件。磁阻元件包括具有固定磁化方向的第一磁性膜，具有固定磁化方向的第二磁性膜，具有可旋转磁化方向的第三磁性膜，第一非磁性膜和第二非磁性膜。第一磁性膜，第一非磁性膜，第三磁性膜，第二非磁性膜和第二磁性膜按此顺序堆叠。

30. 发明授权

US08802247B2 Perpendicular magnetic recording medium with high medium S/N 有权
标题翻译：具有高介质S / N的垂直磁记录介质
公开(公告)号：US08802247B2
公开(公告)日：2014-08-12
申请号：US11582878
申请日：2006-10-17
申请人： Hiroyuki Matsumoto , Mitsuhiro Shoda , Reiko Arai , Yuzuru Hosoe , Katsumi Mabuchi
发明人： Hiroyuki Matsumoto , Mitsuhiro Shoda , Reiko Arai , Yuzuru Hosoe , Katsumi Mabuchi
IPC分类号： G11B5/66 , G11B5/667
CPC分类号： G11B5/667
摘要： A medium having high medium S/N and excellent corrosion resistance is achieved. In one embodiment, an adhesion layer, a soft magnetic layer, an intermediate layer, a magnetic recording layer, and a protective layer are deposited, in order, on a substrate. The soft magnetic underlayer consists at least of two soft magnetic layers, the first soft magnetic layer formed on the recording layer side being composed of an amorphous alloy containing 85 at. % or less of Co, and the second soft magnetic layer formed on the substrate side being composed of an alloy containing more than 85 at. % of Co.
摘要翻译：实现了具有高介质S / N和优异耐腐蚀性的介质。在一个实施例中，粘附层，软磁层，中间层，磁记录层和保护层依次沉积在基板上。软磁性底层至少由两个软磁性层构成，记录层侧形成的第一软磁性层由含有85μm的非晶态合金构成。 Co以下的合金，由基板侧形成的第二软磁性层由含有85以上的合金构成。有限公司

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