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1. 发明授权

US07304825B2 CCP-CCP-GMR head assembly with good operating life, and magnetic recording/reproducing apparatus therewith 有权
标题翻译： CCP-CCP-GMR头组件，具有良好的使用寿命，以及磁记录/再现装置
公开(公告)号：US07304825B2
公开(公告)日：2007-12-04
申请号：US10985886
申请日：2004-11-12
申请人： Tomomi Funayama , Kohichi Tateyama , Masayuki Takagishi
发明人： Tomomi Funayama , Kohichi Tateyama , Masayuki Takagishi
IPC分类号： G11B5/39
CPC分类号： G11B5/1272 , G11B5/33 , G11B5/39
摘要： Disclosed is a CCP-CPP-GMR head assembly which has: a CCP-CPP-GMR head that includes at least a current control layer having as a microstructure a plurality of truncated cone electric conductors with axes the same as a current direction and an insulator filling between the plurality of truncated cone electric conductors, and in which a surface on which a larger-area basal plane of the plurality of truncated cone electric conductors is greater in number is a first surface of the current control layer and a surface of an opposite side of the first surface is a second surface of the current control layer; and a sense current source providing the CCP-CPP-GMR head with a sense current that flows from the second surface to the first surface, a magnetic recording/reproducing apparatus having such a head, and a specification method of an appropriate sense current direction of the CCP-CPP-GMR head.
摘要翻译：公开了一种CCP-CPP-GMR头组件，其具有：CCP-CPP-GMR头，其至少包括具有作为微结构的电流控制层，多个具有与电流方向相同的轴的截头锥形电导体和绝缘体多个截锥形电导体之间的填充，其中多个截锥形电导体的较大面积的基面在其上较大的表面是电流控制层的第一表面和相反的表面第一表面的一侧是电流控制层的第二表面; 以及感测电流源，为CCP-CPP-GMR头提供从第二表面流向第一表面的感测电流，具有这种头的磁记录/再现装置，以及适当的感应电流方向的指定方法 CCP-CPP-GMR头。

2. 发明授权

US07126795B2 Magnetic recording head, a magnetic reproducing head, a magnetic recording apparatus, and a magnetic reproducing apparatus 失效
公开(公告)号：US07126795B2
公开(公告)日：2006-10-24
申请号：US09938611
申请日：2001-08-27
申请人： Tomomi Funayama , Kohichi Tateyama , Michiko Hara , Masatoshi Yoshikawa , Hiroaki Yoda
发明人： Tomomi Funayama , Kohichi Tateyama , Michiko Hara , Masatoshi Yoshikawa , Hiroaki Yoda
IPC分类号： G11B5/127 , G11B5/33
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3113 , G11B5/3146 , G11B5/3183 , G11B5/3919 , G11B5/3935 , G11B2005/3996
摘要： A magnetic recording head, a magnetic reproducing head, a magnetic recording apparatus comprising the magnetic recording head, and a magnetic reproducing apparatus comprising the magnetic reproducing head are described. The magnetic reproducing head having a magnetic gap at a medium-facing surface and includes a pair of magnetic yokes of ferromagnetic material, a magnetoresistance effect film, and a pair of biasing films. One of the pair of magnetic yokes has a magnetic tip at the medium-facing surface and also a rear portion recessed from the medium-facing surface and magnetically coupled to the magnetic tip. The magnetic tip has a first width in a track width direction at the medium-facing surface, and the rear portion has a second width in the track width direction wider than the first width. The magnetoresistance effect film is recessed from the medium-facing surface and is magnetically coupled to the pair of magnetic yokes of ferromagnetic material. The pair of biasing films are recessed from the medium-facing surface and one of the pair of biasing films comprises a hard magnetic material layer disposed adjacent to the rear portion or an antiferromagnetic material layer disposed in contact with the rear portion. The magnetic tip may be provided with appropriate volume of the magnetic biasing from the magnetic biasing film and magnetic domains in the magnetic tip may be sufficiently controlled.

3. 发明授权

US06751846B2 Magnetic head manufacturing method 失效
标题翻译：磁头制造方法
公开(公告)号：US06751846B2
公开(公告)日：2004-06-22
申请号：US10401869
申请日：2003-03-31
申请人： Susumu Hashimoto , Michiko Hara , Tomohiko Nagata , Kohichi Tateyama , Masatoshi Yoshikawa , Takeo Sakakubo , Hiroaki Yoda , Akio Hori , Takashi Koizumi
发明人： Susumu Hashimoto , Michiko Hara , Tomohiko Nagata , Kohichi Tateyama , Masatoshi Yoshikawa , Takeo Sakakubo , Hiroaki Yoda , Akio Hori , Takashi Koizumi
IPC分类号： G11B5127
CPC分类号： G11B5/313 , G11B5/3116 , G11B5/3163 , G11B5/3967 , Y10T29/49044
摘要： A method for manufacturing a magnetic head which includes a lower write pole having a projection, an upper write pole having a projection opposed to the projection of the lower write pole, and a magnetic gap interposed between the projection of the upper write pole and the projection of the lower write pole, comprising: a first step of making the magnetic gap on the projection of the lower write pole; a second step of making a non-magnetic material layer on the lower write pole, the non-magnetic material layer having a projection on its top surface in positional alignment with the projection of the lower write pole; a third step of making a mask layer on the non-magnetic material layer, the mask layer having an opening in which the top surface of the projection of the non-magnetic material layer is exposed; a fourth step of making a curved recess in the non-magnetic material layer by isotropically etching the non-magnetic material layer through the opening of the mask layer; a fifth step of making an approximately tapered recess down from the bottom of the curved recess by anisotropically etching the non-magnetic material layer through the opening of the mask layer; and a sixth step of making the upper write pole by burying a magnetic material in the tapered recess and the curved recess is provided.
摘要翻译：一种用于制造磁头的方法，该磁头包括具有突出部的下部写入极，具有与下部写入磁极的突起相对的突出部的上部写入磁极，以及插入在上部写入磁极和突起之间的磁隙包括：使下部写入极的投影上的磁隙形成的第一步骤; 在下写入磁极上制作非磁性材料层的第二步骤，非磁性材料层在其顶表面上具有与下写入磁极的突起位置对准的突起; 在非磁性材料层上形成掩模层的第三步骤，所述掩模层具有露出所述非磁性材料层的突起的顶表面的开口; 通过所述掩模层的开口对所述非磁性材料层进行各向同性蚀刻来制造所述非磁性材料层中的弯曲凹部的第四工序; 第五步骤，通过通过掩模层的开口各向异性蚀刻非磁性材料层，从弯曲凹槽的底部向下形成大致锥形的凹陷; 并且提供通过将磁性材料埋入锥形凹部和弯曲凹部中来制造上部写入极的第六步骤。

4. 发明授权

US06172858B2 Thin film head 有权
标题翻译：薄膜头
公开(公告)号：US06172858B2
公开(公告)日：2001-01-09
申请号：US09479651
申请日：2000-01-07
申请人： Hiroaki Yoda , Yuichi Ohsawa , Kohichi Tateyama , Reiko Kondoh , Toshihiko Ohta , Junichi Akiyama , Hitoshi Iwasaki
发明人： Hiroaki Yoda , Yuichi Ohsawa , Kohichi Tateyama , Reiko Kondoh , Toshihiko Ohta , Junichi Akiyama , Hitoshi Iwasaki
IPC分类号： G11B5127
CPC分类号： B82Y10/00 , B82Y25/00 , G11B5/1278 , G11B5/3163 , G11B5/3903 , G11B5/3912 , G11B5/3919 , G11B5/3932 , G11B5/3967 , G11B5/399 , G11B2005/0016 , G11B2005/0018 , G11B2005/3996 , Y10T29/49025
摘要： The present invention provides a thin film head having a magnetoresistance effect element which includes at least two magnetic films, a nonmagnetic film sandwiched between the magnetic films, and leads connected to the magnetoresistance effect element wherein the width of one of the magnetic films, which essentially responds to a signal magnetic field, is not more than a distance between leads. The present invention provides a thin film head having a magnetoresistance effect element which includes at least two magnetic films and a nonmagnetic film sandwiched between the magnetic films, which makes use of a change in magnetic resistance caused by spin-dependent scattering, wherein at least a portion of one magnetic films, which essentially respond to a signal magnetic field extends in a direction same as that of the signal magnetic field.
摘要翻译：本发明提供了一种具有磁阻效应元件的薄膜头，该磁阻效应元件包括至少两个磁性膜，夹在磁性膜之间的非磁性膜和连接到磁阻效应元件的引线，其中一个磁性膜的宽度基本上响应信号磁场，不超过引线之间的距离。本发明提供了具有磁阻效应元件的薄膜头，该磁阻效应元件包括至少两个磁性膜和夹在磁性膜之间的非磁性膜，其利用由自旋依赖性散射引起的磁阻的变化，其中至少一个基本上响应于信号磁场的一个磁性膜的部分在与信号磁场的方向相同的方向上延伸。

5. 发明授权

US07514916B2 CCP-CPP-GMR head assembly, magnetic recording/reproducing apparatus, and specification method of appropriate sense current direction of CCP-CPP-GMR head 失效
标题翻译： CCP-CPP-GMR头组件，磁记录/再现装置以及CCP-CPP-GMR头适当感应电流方向的规范方法
公开(公告)号：US07514916B2
公开(公告)日：2009-04-07
申请号：US11834855
申请日：2007-08-07
申请人： Tomomi Funayama , Kohichi Tateyama , Masayuki Takagishi
发明人： Tomomi Funayama , Kohichi Tateyama , Masayuki Takagishi
IPC分类号： G01R33/09 , G11B5/39
CPC分类号： G11B5/1272 , G11B5/33 , G11B5/39
摘要： Disclosed is a CCP-CPP-GMR head assembly which has: a CCP-CPP-GMR head that includes at least a current control layer having as a microstructure a plurality of truncated cone electric conductors with axes the same as a current direction and an insulator filling between the plurality of truncated cone electric conductors, and in which a surface on which a larger-area basal plane of the plurality of truncated cone electric conductors is greater in number is a first surface of the current control layer and a surface of an opposite side of the first surface is a second surface of the current control layer; and a sense current source providing the CCP-CPP-GMR head with a sense current that flows from the second surface to the first surface, a magnetic recording/reproducing apparatus having such a head, and a specification method of an appropriate sense current direction of the CCP-CPP-GMR head.
摘要翻译：公开了一种CCP-CPP-GMR头组件，其具有：CCP-CPP-GMR头，其至少包括具有作为微结构的电流控制层，多个具有与电流方向相同的轴的截头锥形电导体和绝缘体多个截锥形电导体之间的填充，其中多个截锥形电导体的较大面积的基面在其上较大的表面是电流控制层的第一表面和相反的表面第一表面的一侧是电流控制层的第二表面; 以及感测电流源，为CCP-CPP-GMR头提供从第二表面流向第一表面的感测电流，具有这种头的磁记录/再现装置，以及适当的感应电流方向的指定方法 CCP-CPP-GMR头。

6. 发明授权

US06912769B2 Method a fabricating a magnetic head 失效
标题翻译：制造磁头的方法a
公开(公告)号：US06912769B2
公开(公告)日：2005-07-05
申请号：US10389765
申请日：2003-03-18
申请人： Hiroaki Yoda , Kohichi Tateyama , Yusuke Ohinata
发明人： Hiroaki Yoda , Kohichi Tateyama , Yusuke Ohinata
IPC分类号： G11B5/31 , G11B5/00 , G11B5/012 , G11B5/127 , G11B21/21 , H04B31/00
CPC分类号： G11B5/1278 , G11B5/00 , G11B5/012 , G11B5/3106 , G11B2005/0029 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49815
摘要： A magnetic head is configured by forming a thin-film-shaped magnetic element on top of a thin film that is provided parallel to a medium-facing surface. An aperture is formed in the thin film, and part of a main magnetic pole is formed to have a tip portion that protrudes into that aperture. This configuration makes it possible to impose highly accurate control over the amount by which thin-film-shaped magnetic elements are recessed from the medium-facing surface, while simultaneously exerting accurate control over the amount of protrusion of the main magnetic pole tip portion by making the thickness of the thin film extremely small. As a result, the recording flux strength at the main magnetic pole tip portion can be increased to the ultimate value thereof, making it possible to supply a head that can record on a high retention force medium suitable for higher densities.
摘要翻译：通过在平行于中间面的表面设置的薄膜的顶部上形成薄膜状磁性元件来构成磁头。在薄膜中形成孔，并且主磁极的一部分形成为具有突出到该孔中的尖端部分。通过这样的构成，能够对从中间面向薄膜状的磁性体的凹陷量进行高度精确的控制，同时通过制造主磁极尖端部的突出量来进行精确的控制薄膜的厚度极小。结果，可以将主磁极尖端部分处的记录磁通强度增加到其最终值，使得可以提供可以记录在适合于更高密度的高保持力介质上的磁头。

7. 发明授权

US06724582B2 Current perpendicular to plane type magnetoresistive device, magnetic head, and magnetic recording/reproducing apparatus 有权
标题翻译：电流垂直于平面型磁阻器件，磁头和磁记录/重放装置
公开(公告)号：US06724582B2
公开(公告)日：2004-04-20
申请号：US10050543
申请日：2002-01-18
申请人： Tomomi Funayama , Masayuki Takagishi , Masatoshi Yoshikawa , Kohichi Tateyama
发明人： Tomomi Funayama , Masayuki Takagishi , Masatoshi Yoshikawa , Kohichi Tateyama
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3909 , G11B5/3932 , G11B2005/3996 , H01L43/08
摘要： A current perpendicular to plane type magnetoresistive device has a magnetoresistive film, a pair of electrodes which allow a sense current to flow through the magnetoresistive film in a perpendicular direction to the plane thereof, and a biasing film which imparts a biasing magnetic field to the magnetoresistive film in a parallel direction to film plane. The direction of the magnetic field generated by the sense current flowing through the magnetoresistive film in the perpendicular direction to film plane is made substantially anti-parallel to the direction of the biasing magnetic field in a vicinity of a portion of the magnetoresistive film where a signal magnetic flux is introduced.
摘要翻译：垂直于平面型磁阻器件的电流具有磁阻膜，一对电极，其允许感测电流沿垂直于其平面的方向流过磁阻膜;以及偏置膜，其向磁阻施加偏置磁场胶片平行于胶片平面。由磁阻膜在垂直于膜平面的方向上流过的感测电流产生的磁场的方向与磁阻膜的一部分附近的偏置磁场的方向基本反平行，其中信号引入磁通量。

8. 发明授权

US5894384A Magnetoresistance effect head in which a magnetoresistance effect element and a soft magnetic film form a single magnetic circuit 失效
标题翻译：其中磁阻效应元件和软磁膜形成单个磁路的磁阻效应头
公开(公告)号：US5894384A
公开(公告)日：1999-04-13
申请号：US816336
申请日：1997-03-13
申请人： Tomomi Funayama , Tadahiko Kobayashi , Hiromi Sakata , Kohichi Tateyama
发明人： Tomomi Funayama , Tadahiko Kobayashi , Hiromi Sakata , Kohichi Tateyama
IPC分类号： G11B5/00 , G11B5/127 , G11B5/31 , G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3916 , G11B5/3919 , G11B5/3958 , G11B5/3967 , G11B2005/0008 , G11B2005/3996 , G11B5/3113 , G11B5/3183
摘要： The magnetic head comprises two magnetoresistance effect elements and a soft magnetic film connecting end portions of the magnetoresistance effect elements with each other. The two magnetoresistance effect elements and the soft magnetic film are arranged in series so as to form a single magnetic circuit, and a magnetic gap is provided in the side of a surface facing a magnetic medium. Magnetic flux from the magnetic medium is introduced into the magnetoresistance effect elements through the magnetic gap. An insulating material may be used to fill the magnetic gap.
摘要翻译：磁头包括两个磁阻效应元件和连接磁阻效应元件的端部彼此的软磁膜。两个磁阻效应元件和软磁膜被串联布置以形成单个磁路，并且在面向磁介质的表面的侧面设置磁隙。来自磁介质的磁通量通过磁隙引入到磁阻效应元件中。可以使用绝缘材料来填充磁隙。

9. 发明申请

US20080106826A1 CURRENT-PERPENDICULAR-TO-PLANE MAGNETORESISTANCE EFFECT DEVICE WITH DOUBLE CURRENT DOUBLE LAYERS 审中-公开
标题翻译：具有双电流双层的电流 - 平面磁平面效应器件
公开(公告)号：US20080106826A1
公开(公告)日：2008-05-08
申请号：US11965177
申请日：2007-12-27
申请人： Tomomi Funayama , Masayuki Takagishi , Katsuhiko Koui , Kohichi Tateyama
发明人： Tomomi Funayama , Masayuki Takagishi , Katsuhiko Koui , Kohichi Tateyama
IPC分类号： G11B5/33
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/3906 , G11B5/398 , G11B5/3983 , G11B2005/3996 , H01F10/3259 , H01F10/3263 , H01L43/08
摘要： A magnetoresistance effect element of the dual spin valve type using a current-perpendicular-to-the-plane (CPP) system where a sensing current flows perpendicular to the stacked faces of a plurality of conductive layers, the magnetoresistance effect element comprises a first unit which includes a free layer and a first pinning layer, a second unit which includes the free layer shared with the first unit and a second pinning layer, a first current control layer which is provided in the first unit and limits the flow quantity of the sensing current, and a second current control layer which is provided in the second unit and limits the flow quantity of the sensing current.
摘要翻译：使用电流垂直于平面（CPP）系统的双自旋阀类型的磁阻效应元件，其中感测电流垂直于多个导电层的堆叠面流动，磁阻效应元件包括第一单元其包括自由层和第一钉扎层，第二单元，其包括与第一单元共享的自由层和第二钉扎层，第一电流控制层，设置在第一单元中并限制感测的流量电流和第二电流控制层，其设置在第二单元中并限制感测电流的流量。

10. 发明申请

US20080106825A1 Current-perpendicular-to-plane magnetoresistance effect device with double current control layers 审中-公开
标题翻译：具有双电流控制层的电流 - 垂直于平面的磁阻效应器件
公开(公告)号：US20080106825A1
公开(公告)日：2008-05-08
申请号：US11965123
申请日：2007-12-27
申请人： Tomomi Funayama , Masayuki Takagishi , Katsuhiko Koui , Kohichi Tateyama
发明人： Tomomi Funayama , Masayuki Takagishi , Katsuhiko Koui , Kohichi Tateyama
IPC分类号： G11B5/33
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/3906 , G11B5/398 , G11B5/3983 , G11B2005/3996 , H01F10/3259 , H01F10/3263 , H01L43/08
摘要： A magnetoresistance effect element of the dual spin valve type using a current-perpendicular-to-the-plane (CPP) system where a sensing current flows perpendicular to the stacked faces of a plurality of conductive layers, the magnetoresistance effect element comprises a first unit which includes a free layer and a first pinning layer, a second unit which includes the free layer shared with the first unit and a second pinning layer, a first current control layer which is provided in the first unit and limits the flow quantity of the sensing current, and a second current control layer which is provided in the second unit and limits the flow quantity of the sensing current.
摘要翻译：使用电流垂直于平面（CPP）系统的双自旋阀类型的磁阻效应元件，其中感测电流垂直于多个导电层的堆叠面流动，磁阻效应元件包括第一单元其包括自由层和第一钉扎层，第二单元，其包括与第一单元共享的自由层和第二钉扎层，第一电流控制层，设置在第一单元中并限制感测的流量电流和第二电流控制层，其设置在第二单元中并限制感测电流的流量。

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