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81. 发明申请

US20080144228A1 MAGNETIC HEAD AND MAGNETIC DISK APPARATUS 审中-公开
标题翻译：磁头和磁盘设备
公开(公告)号：US20080144228A1
公开(公告)日：2008-06-19
申请号：US11955805
申请日：2007-12-13
申请人： Tomomi Funayama
发明人： Tomomi Funayama
IPC分类号： G11B5/33
CPC分类号： G11B5/3932 , B82Y10/00 , B82Y25/00 , G11B2005/3996
摘要： According to one embodiment, a magnetic head includes a magnetoresistance element including a first spin valve layer, a bias layer, and a second spin valve layer sequentially arranged in the track direction, the first spin valve layer having a first magnetization free layer including a ferromagnetic film, the second spin valve layer having a second magnetization free layer having a ferromagnetic film, and the bias layer having a magnetic layer to apply a bias magnetic field, in a direction of track width orthogonal to the track direction, to the first magnetization free layer and the second magnetization free layer, and a pair of electrodes to cause a current, having a direction almost parallel to the track direction, to flow into the magnetoresistance element.
摘要翻译：根据一个实施例，磁头包括磁阻元件，该磁阻元件包括顺序地沿轨道方向布置的第一自旋阀层，偏置层和第二自旋阀层，第一自旋阀层具有包含铁磁性的第一磁化自由层所述第二自旋阀层具有具有铁磁性膜的第二磁化自由层，所述偏置层具有磁性层，以在垂直于轨道方向的磁道宽度的方向上施加偏置磁场，以使第一磁化自由度层和第二磁化自由层，以及一对电极，其使具有几乎平行于磁道方向的方向的电流流入磁阻元件。

82. 发明申请

US20060044701A1 Magnetic head, head suspension assembly, and magnetic reproduction device 有权
标题翻译：磁头，头悬挂组件和磁性再生装置
公开(公告)号：US20060044701A1
公开(公告)日：2006-03-02
申请号：US11200161
申请日：2005-08-10
申请人： Tomomi Funayama
发明人： Tomomi Funayama
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： B82Y10/00 , G11B5/3903 , G11B5/3912
摘要： A magnetic head provided with magnetoresistance effect element, the magnetic head comprises first shielding layer superimposed on one surface of the magnetoresistance effect element and whose area is larger than that of this one surface, a first lead layer formed ranging from a portion where the first shielding layer is superimposed on the magnetoresistance effect element to another portion on the first shielding layer and which applies the sense current to the magnetoresistance effect element, a second shielding layer superimposed on another surface of the magnetoresistance effect element opposite to the one surface and whose area is larger than that of the other surface, and a second lead layer formed ranging from a portion where the second shielding layer is superimposed on the magnetoresistance effect element to another portion on the second shielding layer and which applies the sense current to the magnetoresistance effect element.
摘要翻译：一种设置有磁阻效应元件的磁头，磁头包括叠加在磁阻效应元件的一个表面上并且面积大于该一个表面的第一屏蔽层，第一引线层从第一屏蔽层层叠在磁阻效应元件上，并与第一屏蔽层上的另一部分叠加，并将感应电流施加到磁阻效应元件，第二屏蔽层叠加在与该表面相反的磁阻效应元件的另一个表面上，大于其他表面的第二引线层，以及第二引线层，其从第二屏蔽层的重叠在磁阻效应元件上的部分到第二屏蔽层上的另一部分形成，并且将感测电流施加到磁阻效应元件。

83. 发明申请

US20050094317A1 Magnetoresistance effect element, magnetic head, head suspension assembly, magnetic reproducing apparatus, magnetoresistance effect element manufacturing method, and magnetoresistance effect element manufacturing apparatus 审中-公开
标题翻译：磁阻效应元件，磁头，磁头悬挂组件，磁再现装置，磁阻效应元件制造方法和磁阻效应元件制造装置
公开(公告)号：US20050094317A1
公开(公告)日：2005-05-05
申请号：US10946346
申请日：2004-09-22
申请人： Tomomi Funayama
发明人： Tomomi Funayama
IPC分类号： G11B5/127 , G11B5/39 , G11B5/48 , H01L21/8246 , H01L27/105 , H01L43/08 , H01L43/10 , H01L43/12
CPC分类号： G11B5/3903 , G11B5/4826 , G11B5/4833
摘要： A CPP (Current Perpendicular-to-the-Plane) magnetoresistance effect element which causes sensing current to flow perpendicularly to the stacked faces of a plurality of conductive layers, the CPP magnetoresistance effect element comprises a composite layer in which a plurality of regions differing from one another are formed in a common layer in a mixed manner and which includes a current control region which is formed narrower than the stacked area of the composite layer and controls the flow rate of the sensing current, and an insulating material region which cuts off the flow of the sensing current.
摘要翻译： CPP（电流垂直对平面）磁阻效应元件使得感测电流垂直于多个导电层的堆叠面流动，CPP磁阻效应元件包括复合层，其中多个区域不同于彼此以共同的层形成为混合状态，其包括形成为比复合层的堆叠区域窄的电流控制区域，并控制感测电流的流量;以及绝缘材料区域，其切断感应电流的流动。

84. 发明授权

US06804089B2 Yoke-type magnetic head and magnetic recording/reproducing device 失效
标题翻译：轭式磁头和磁记录/再现装置
公开(公告)号：US06804089B2
公开(公告)日：2004-10-12
申请号：US10424844
申请日：2003-04-29
申请人： Tomomi Funayama , Yuichi Osawa , Masatoshi Yoshikawa , Hiroaki Yoda
发明人： Tomomi Funayama , Yuichi Osawa , Masatoshi Yoshikawa , Hiroaki Yoda
IPC分类号： G11B527
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/1278 , G11B5/3183 , G11B5/3903 , G11B5/3925 , G11B2005/3996
摘要： The objective of this invention is to provide a yoke-type magnetic head and a magnetic recording device in which Barkhausen noise is low. It is possible to induce a magnetic flux efficiently within a magnetic head by using a granular magnetic film that exhibits both soft magnetic properties and a high resistance, which suppresses any shunt of the flow of the sense current into the magnetic yokes, thus preventing any deterioration insensitivity. Since this means that eddy currents can be suppressed, even during use in high-frequency regions, the frequency response characteristics are also improved. In addition, since the magnetic grains within the granular magnetic film are nano-sized, the dimensions of magnetic domains therein are also miniaturized to match that size, and thus there is also substantially no movement of the magnetic domain walls and this miniaturization also makes it possible to suppress the generation of Barkhausen noise. A similar effect can also be obtained by inducing maze domains within the magnetic yokes.
摘要翻译：本发明的目的是提供一种轭型磁头和一种其中巴克豪森噪声低的磁记录装置。通过使用表现出软磁性能和高电阻的粒状磁性膜，能够有效地在磁头内引起磁通，这抑制了磁轭中感应电流流动的任何分流，从而防止任何劣化不敏感。由于这意味着即使在高频区域使用时也能够抑制涡流，所以也提高了频率响应特性。此外，由于粒状磁性膜内的磁性粒子是纳米尺寸的，因此其中的磁畴的尺寸也小型化以与该尺寸相匹配，因此也基本上没有磁畴壁的移动，并且这种小型化也使得它可能抑制巴克豪森噪音的产生。通过诱导磁轭内的迷宫结构也可以获得类似的效果。

85. 发明授权

US06741431B2 Magnetic head and magnetic recording/reproduction device 失效
标题翻译：轭型磁头和磁记录/再现装置
公开(公告)号：US06741431B2
公开(公告)日：2004-05-25
申请号：US10424822
申请日：2003-04-29
申请人： Tomomi Funayama , Yuichi Osawa , Masatoshi Yoshikawa , Hiroaki Yoda
发明人： Tomomi Funayama , Yuichi Osawa , Masatoshi Yoshikawa , Hiroaki Yoda
IPC分类号： G11B5127
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/1278 , G11B5/3183 , G11B5/3903 , G11B5/3925 , G11B2005/3996
摘要： The objective of this invention is to provide a yoke-type magnetic head and a magnetic recording device in which Barkhausen noise is low. It is possible to induce a magnetic flux efficiently within a magnetic head by using a granular magnetic film that exhibits both soft magnetic properties and a high resistance, which suppresses any shunt of the flow of the sense current into the magnetic yokes, thus preventing any deterioration insensitivity. Since this means that eddy currents can be suppressed, even during use in high-frequency regions, the frequency response characteristics are also improved. In addition, since the magnetic grains within the granular magnetic film are nano-sized, the dimensions of magnetic domains therein are also miniaturized to match that size, and thus there is also substantially no movement of the magnetic domain walls and this miniaturization also makes it possible to suppress the generation of Barkhausen noise. A similar effect can also be obtained by inducing maze domains within the magnetic yokes.
摘要翻译：本发明的目的是提供一种轭型磁头和一种其中巴克豪森噪声低的磁记录装置。通过使用表现出软磁性能和高电阻的粒状磁性膜，能够有效地在磁头内引起磁通，这抑制了磁轭中感应电流流动的任何分流，从而防止任何劣化不敏感。由于这意味着即使在高频区域使用时也能够抑制涡流，所以也提高了频率响应特性。此外，由于粒状磁性膜内的磁性粒子是纳米尺寸的，因此其中的磁畴的尺寸也小型化以匹配该尺寸，因此也基本上没有磁畴壁的移动，并且这种小型化也使得它可能抑制巴克豪森噪音的产生。通过诱导磁轭内的迷宫结构也可以获得类似的效果。

86. 发明授权

US06636390B2 Magnetic head and magnetic recording and reproducing system 失效
标题翻译：磁头和磁记录和再现系统
公开(公告)号：US06636390B2
公开(公告)日：2003-10-21
申请号：US09801698
申请日：2001-03-09
申请人： Tomomi Funayama , Masatoshi Yoshikawa , Takashi Koizumi , Akio Hori , Yuichi Osawa
发明人： Tomomi Funayama , Masatoshi Yoshikawa , Takashi Koizumi , Akio Hori , Yuichi Osawa
IPC分类号： G11B5187
CPC分类号： B82Y10/00 , G11B5/3903 , G11B5/3967
摘要： A magnetic head for vertical magnetic. The magnetic head includes: a recording head including a first main pole and a first return yoke, the first main pole having a first medium facing portion, the first return yoke having a second medium facing portion, and a reproducing head including a second main pole and a second return yoke, the second main pole having a third medium facing portion, the second return yoke having a fourth medium facing portion, first angle &thgr;1 between first and second straight lines being smaller than second angle &thgr;2 between the first straight line and third straight line, the first straight line connecting centers of medium facing surfaces the first medium facing portion and the second medium facing portion, the second straight line connecting opposing corners of medium facing surfaces of the first medium facing portion and the second medium facing portion, and the third straight line connecting centers of medium facing surfaces of the third medium facing portion and the fourth medium facing portion.
摘要翻译：用于垂直磁性的磁头。磁头包括：记录头，包括第一主极和第一返回轭，第一主极具有第一介质面对部分，第一返回轭具有第二介质面对部分，以及再现头，包括第二主极和第二返回轭，所述第二主极具有第三介质面对部分，所述第二返回轭具有第四介质面对部分，第一和第二直线之间的第一角度θ1小于第一直线与第三直线之间的第二角度θ2 第一直线连接介质相对表面的第一介质面向部分和第二介质面向部分的中心，第二直线连接第一介质面向部分和第二介质面向部分的介质相对表面的相对角，以及第三直线连接第三介质面向部分的介质相对表面的中心和面向p的第四介质原因。

87. 发明授权

US06455178B1 Exchange coupling film and magnetoresistive element 有权
标题翻译：交换耦合膜和磁阻元件
公开(公告)号：US06455178B1
公开(公告)日：2002-09-24
申请号：US09471498
申请日：1999-12-23
申请人： Hiromi Fuke , Yuuzo Kamiguchi , Susumu Hashimoto , Tomomi Funayama , Kazuhiro Saito , Hitoshi Iwasaki , Masashi Sahashi
发明人： Hiromi Fuke , Yuuzo Kamiguchi , Susumu Hashimoto , Tomomi Funayama , Kazuhiro Saito , Hitoshi Iwasaki , Masashi Sahashi
IPC分类号： B32B1504
CPC分类号： B82Y25/00 , G01R33/093 , G11B5/399 , H01F10/3218 , H01F10/3268 , H01L43/10 , Y10T428/1121 , Y10T428/12861 , Y10T428/263
摘要： An exchange coupling film comprises a ferromagnetic film and an antiferromagnetic film laminated on the ferromagnetic film, wherein at least a portion of the antiferromagnetic film has a face-centered cubic crystal structure and the antiferromagnetic film comprises an IrMn alloy represented by the general formula of IrxMn100−x, wherein x stands for a value by atomic % satisfying the expression, 2≦x≦80.
摘要翻译：交换耦合膜包括层叠在铁磁膜上的铁磁膜和反铁磁膜，其中至少一部分反铁磁膜具有面心立方晶体结构，反铁磁膜包括由通式IrxMn100表示的IrMn合金 -x，其中x代表满足表达式2 <= x <= 80的原子％的值。

88. 发明授权

US06307708B1 Exchange coupling film having a plurality of local magnetic regions, magnetic sensor having the exchange coupling film, and magnetic head having the same 失效
标题翻译：具有多个局部磁性区域的交换耦合膜，具有交换耦合膜的磁性传感器和具有该交换耦合膜的磁头
公开(公告)号：US06307708B1
公开(公告)日：2001-10-23
申请号：US09268322
申请日：1999-03-16
申请人： Hiroaki Yoda , Masatoshi Yoshikawa , Yuichi Ohsawa , Tomomi Funayama
发明人： Hiroaki Yoda , Masatoshi Yoshikawa , Yuichi Ohsawa , Tomomi Funayama
IPC分类号： G11B5147
CPC分类号： B82Y25/00 , G01R33/093 , G11B5/127 , G11B5/3113 , G11B5/3156 , G11B5/3903 , G11B5/3925 , G11B5/3967 , G11B5/66 , H01F10/3218
摘要： An exchange coupling film, magnetic sensor having the exchange coupling film, and a magnetic head having the same. The exchange coupling film includes a ferromagnetic layer and an antiferromagnetic layer where a total a magnetic anisotropy is controlled to be dispersed by annealing or depositing the film in rotating magnetic fields. Small local magnetic regions of different uniaxial anisotropy are introduced in the exchange coupling film. The magnetic anisotropy dispersion of the exchange coupling film results in prohibiting large domain wall transfer of an irreversible change in magnetization direction and suppressing BHN.
摘要翻译：具有交换耦合膜的交换耦合膜，磁传感器和具有该交换耦合膜的磁头。交换耦合膜包括铁磁层和反铁磁层，其中通过在旋转磁场中退火或沉积膜来控制总磁各向异性以分散。在交换耦合膜中引入具有不同单轴各向异性的小局部磁性区域。交换耦合膜的磁各向异性分散导致阻止磁畴方向上不可逆变化的大的畴壁转移并抑制BHN。

89. 发明授权

US5920447A Magnetic disk unit having laminated magnetic heads 失效
标题翻译：具有层叠磁头的磁盘单元
公开(公告)号：US5920447A
公开(公告)日：1999-07-06
申请号：US818674
申请日：1997-03-14
申请人： Hiromi Sakata , Hiroaki Yoda , Tomomi Funayama , Kohichi Tateyama , Tadahiko Kobayashi , Shigeru Takekado , Yoichiro Tanaka
发明人： Hiromi Sakata , Hiroaki Yoda , Tomomi Funayama , Kohichi Tateyama , Tadahiko Kobayashi , Shigeru Takekado , Yoichiro Tanaka
IPC分类号： G11B5/012 , G11B5/02 , G11B5/39 , G11B5/48 , G11B5/55 , G11B23/00 , G11B5/29
CPC分类号： G11B5/3967 , G11B5/012 , G11B5/4826 , G11B5/488 , G11B5/4886 , G11B5/5526 , G11B23/0007 , G11B5/02
摘要： A magnetic multi-head unit includes: a specific magnetic head formed so that a pair of magnetic yokes face each other on the same plane via a magnetic gap inclined by a predetermined azimuth angle; and a magnetic head which is adjacent to the specific magnetic head and which is formed so that a pair of magnetic yokes face each other on a plane different from the plane of the specific magnetic head via a magnetic gap inclined by the azimuth angle. The specific magnetic head and the adjacent magnetic head are laminated so as to form a plurality of layers while being shifted from each other in directions in which tracks on a magnetic disk extend. A magnetic disk unit includes: a magnetic disk, on which a plurality of information recording tracks are formed so as to extend in peripheral directions and which is rotated; and a magnetic multi-head including a plurality of transducers as heads for simultaneously writing and/or reading magnetic information on the plurality of information recording tracks of the magnetic disk every predetermined group of the tracks. The plurality of transducers are positioned as one with respect to the predetermined group of the tracks.
摘要翻译：磁性多头单元包括：特定磁头，其形成为使得一对磁轭经由倾斜预定方位角的磁隙在同一平面上彼此面对; 以及磁头，其与特定磁头相邻，并且形成为使得一对磁轭在与特定磁头的平面不同的平面上经由倾斜方位角的磁隙形成。特定的磁头和相邻的磁头被层叠以形成多个层，同时在磁盘上的磁道延伸的方向上彼此偏移。磁盘单元包括：磁盘，多个信息记录轨道形成为沿圆周方向延伸并旋转的磁盘; 以及包括多个换能器作为磁头的磁性多磁头，用于在每个预定磁道组中的每个磁盘的多个信息记录磁道上同时写入和/或读取磁信息。多个换能器相对于预定的轨道组定位成一个。

90. 发明授权

US5828525A Differential detection magnetoresistance head 失效
标题翻译：差分检测磁阻头
公开(公告)号：US5828525A
公开(公告)日：1998-10-27
申请号：US401489
申请日：1995-03-10
申请人： Hitoshi Iwasaki , Yuichi Ohsawa , Reiko Kondoh , Yuzo Kamiguchi , Susumu Hashimoto , Tomomi Funayama , Hiromi Fuke , Junichi Akiyama , Kazuhiro Saito
发明人： Hitoshi Iwasaki , Yuichi Ohsawa , Reiko Kondoh , Yuzo Kamiguchi , Susumu Hashimoto , Tomomi Funayama , Hiromi Fuke , Junichi Akiyama , Kazuhiro Saito
IPC分类号： G11B5/00 , G11B5/127 , G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3954 , G11B2005/0029 , G11B2005/3996 , G11B5/1278
摘要： A GMR element part is formed of a laminated structure which comprises at least one pair of ferromagnetic layers and a nonmagnetic intermediate layer interposed between the pair of ferromagnetic layers. Signal magnetic field detecting ferromagnetic layers will be optionally disposed one each outside the pair of ferromagnetic layers. The GMR element part consists of a laminated structure which is provided with one pair of GMR ferromagnetic layers opposed to each other across a nonmagnetic intermediate layer or a laminated structure which is provided with one pair of GMR ferromagnetic layer opposed to each other across a nonmagnetic intermediate layer and at least one low-permeability ferromagnetic layer disposed there between through the medium of a nonmagnetic intermediate layer. The GMR element part functions as a read head for sensing the resistance which is varied when signal magnetic fields of mutual opposite directions are applied to the pair of GMR ferromagnetic layers and displaying a differential detection type output response. A granular type ferromagnetic intermediate layer will be used as the GMR element part.
摘要翻译： GMR元件部分由层叠结构形成，该叠层结构包括至少一对铁磁层和介于一对铁磁层之间的非磁性中间层。信号磁场检测铁磁层将可选地布置在一对铁磁层的外侧。 GMR元件部分由层叠结构构成，该叠层结构具有一对跨越非磁性中间层彼此相对的GMR铁磁体层或层叠结构，该层叠结构具有跨越非磁性中间体彼此相对的一对GMR铁磁层层和至少一个通过非磁性中间层的介质设置在其间的低磁导率铁磁层。 GMR元件部分用作读取头，用于感测当相互相反方向的信号磁场施加到一对GMR铁磁层并且显示差分检测型输出响应时变化的电阻。将使用粒状铁磁中间层作为GMR元件部分。

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