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    Method for manufacturing thin-film magnetic head with magnetoresistive effect multi-layered structure
    2.
    发明授权
    Method for manufacturing thin-film magnetic head with magnetoresistive effect multi-layered structure 失效
    具有磁阻效应多层结构的薄膜磁头制造方法

    公开(公告)号：US06406556B1

    公开(公告)日：2002-06-18

    申请号：US09272295

    申请日：1999-03-19

    申请人： Koji Shimazawa ,  Tetsuro Sasaki ,  Manabu Ohta

    发明人： Koji Shimazawa ,  Tetsuro Sasaki ,  Manabu Ohta

    IPC分类号： H01F1008

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  B82Y40/00 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3932 ,  G11B2005/3996 ,  H01F41/304

    摘要： A manufacturing method of a thin-film magnetic head with a MR multi-layered structure using exchange coupling magnetic bias, has a step of forming the MR multi-layered structure, and a step of providing the exchange coupling magnetic bias to the MR multi-layered structure by a temperature-annealing process. The temperature-annealing process includes a step of gradually decreasing the temperature of the multi-layered structure to a first predetermined temperature under application of magnetic field toward a predetermined direction.

    摘要翻译： 使用交换耦合磁偏置的具有MR多层结构的薄膜磁头的制造方法具有形成MR多层结构的步骤，以及向MR多层结构提供交换耦合磁偏置的步骤， 层状结构通过温度退火处理。 温度退火处理包括在朝向规定方向施加磁场的状态下将多层结构的温度逐渐降低到第一规定温度的步骤。

    Magnetoresistive effect multi-layered structure and thin-film magnetic head with the magnetoresistive effect multi-layered structure
    3.
    发明授权
    Magnetoresistive effect multi-layered structure and thin-film magnetic head with the magnetoresistive effect multi-layered structure 有权
    磁阻效应多层结构和薄膜磁头具有磁阻效应多层结构

    公开(公告)号：US06400535B1

    公开(公告)日：2002-06-04

    申请号：US09262314

    申请日：1999-03-04

    申请人： Koji Shimazawa ,  Tetsuro Sasaki ,  Manabu Ohta

    发明人： Koji Shimazawa ,  Tetsuro Sasaki ,  Manabu Ohta

    IPC分类号： G11B566

    CPC分类号： G11B5/66 ,  Y10T428/1121

    摘要： A MR multi-layered structure or a thin-film magnetic head with the MR multi-layered structure includes a non-magnetic electrically conductive material layer, first and second ferromagnetic material layer separated by the non-magnetic electrically conductive material layer, and an anti-ferromagnetic material layer formed adjacent to and in physical contact with one surface of the second ferromagnetic material layer, the one surface being in opposite side of the non-magnetic electrically conductive material layer. The second ferromagnetic material layer includes a first layer of a ferromagnetic material containing Co, and a second layer of a ferromagnetic material with a smaller magnetic anisotropy than that of Co.

    摘要翻译： 具有MR多层结构的MR多层结构或薄膜磁头包括非磁性导电材料层，由非磁性导电材料层分离的第一和第二铁磁材料层， 所述铁磁材料层与所述第二铁磁材料层的一个表面相邻并物理接触地形成，所述一个表面位于所述非磁性导电材料层的相对侧。 第二铁磁材料层包括含有Co的铁磁材料的第一层和比Co的磁各向异性小的铁磁材料的第二层

    Magnetic multilayered film, magnetoresistance effect element and magnetoresistance device
    6.
    发明授权
    Magnetic multilayered film, magnetoresistance effect element and magnetoresistance device 失效
    磁性多层膜，磁阻效应元件和磁阻器件

    公开(公告)号：US5958611A

    公开(公告)日：1999-09-28

    申请号：US873739

    申请日：1997-06-12

    申请人： Manabu Ohta ,  Kiyoshi Noguchi ,  Masashi Sano ,  Satoru Araki ,  Taro Oike

    发明人： Manabu Ohta ,  Kiyoshi Noguchi ,  Masashi Sano ,  Satoru Araki ,  Taro Oike

    IPC分类号： G11B5/31 ,  G11B5/39 ,  H01F10/08 ,  H01F10/32 ,  H01L43/08 ,  H01L43/10 ,  G11B5/66

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  H01F10/3268 ,  H01L43/10 ,  G11B2005/3996 ,  G11B5/3163 ,  Y10S428/90 ,  Y10T428/1107 ,  Y10T428/1121 ,  Y10T428/24355

    摘要： According to the present invention, a magnetic multilayered film includes an oxide antiferromagnetic layer, a pinned ferromagnetic layer which is pinned by the oxide antiferromagnetic layer, a non-magnetic metal layer and a free ferromagnetic layer which are stacked on a substrate in order. A surface roughness Ra of the oxide antiferromagnetic layer at the side of the pinned ferromagnetic layer is set to no greater than 0.6 nm, and a crystal grain size D of the oxide antiferromagnetic layer is set to a value in the range of 10 to 40 nm. Thus, the magnetic multilayered film has the large exchange-coupling magnetic field and MR ratio and MR sensitivity. The magnetic multilayered film may be applied to a magnetoresistance effect element which may also applied to a magnetoresistance device, such as, a magnetoresistance effect type head. The magnetoresistance effect element having such a magnetic multilayered film is capable of obtaining high outputs. The magnetoresistance effect type head having such a magnetoresistance effect element which is excellent in current efficiency and capable of detecting signals magnetically recorded in high density, particularly in ultrahigh density exceeding 3 Gbit/inch.sup.2 and further obtaining large outputs.

    摘要翻译： 根据本发明，磁性多层膜包括氧化物反铁磁性层，由氧化物反铁磁层固定的钉扎铁磁性层，依次层叠在基板上的非磁性金属层和自由铁磁性层。 在被钉扎的铁磁层一侧的氧化物反铁磁性层的表面粗糙度Ra被设定为不大于0.6nm，并且氧化物反铁磁性层的晶粒尺寸D设定在10至40nm的范围内的值 。 因此，磁性多层膜具有大的交换耦合磁场和MR比和MR灵敏度。 可以将磁性多层膜施加到也可以施加到诸如磁阻效应型头的磁阻器件的磁阻效应元件。 具有这种磁性多层膜的磁阻效应元件能够获得高输出。 具有这样的磁阻效应元件的磁电阻效应型头具有优异的电流效率，能够检测高密度地磁记录的信号，特别是超过3Gbit / inch2的超高密度，并进一步获得大的输出。

    Ferromagnetic tunnel junction, magnetoresistive element and magnetic head
    7.
    发明授权
    Ferromagnetic tunnel junction, magnetoresistive element and magnetic head 失效
    铁磁隧道结，磁阻元件和磁头

    公开(公告)号：US5862022A

    公开(公告)日：1999-01-19

    申请号：US933347

    申请日：1997-09-19

    申请人： Kiyoshi Noguchi ,  Taro Oike ,  Satoru Araki ,  Manabu Ohta ,  Masashi Sano

    发明人： Kiyoshi Noguchi ,  Taro Oike ,  Satoru Araki ,  Manabu Ohta ,  Masashi Sano

    IPC分类号： G11B5/39 ,  H01L43/08 ,  G11C11/00 ,  H01L41/12

    CPC分类号： G11B5/3967 ,  H01L43/08

    摘要： This invention is directed to a ferromagnetic tunnel junction, an MR element and a magnetic head. A ferromagnetic tunnel junction is constituted by sequentially laminating a first ferromagnetic film, an insulating film and a second ferromagnetic film. These are laminated on an appropriate insulating substrate. The present invention is characterized in that the barrier potential of the insulating film is set within a range of 0.5 to 3 eV. A ferromagnetic tunnel junction with which a high MR ratio can be achieved with good reproduction characteristics is provided.

    摘要翻译： 本发明涉及铁磁隧道结，MR元件和磁头。 铁磁隧道结由顺序层叠第一铁磁膜，绝缘膜和第二铁磁膜构成。 这些层压在适当的绝缘基板上。 本发明的特征在于，绝缘膜的阻挡电位设定在0.5〜3eV的范围内。 提供了具有良好再生特性可实现高MR比的铁磁隧道结。

    Fuse
    8.
    外观设计
    Fuse 有权
    保险丝

    公开(公告)号：USD567765S1

    公开(公告)日：2008-04-29

    申请号：US29281465

    申请日：2007-06-24

    申请人： Manabu Ohta

    设计人： Manabu Ohta

    Coil component and method for producing same
    9.
    发明授权
    Coil component and method for producing same 有权
    线圈部件及其制造方法

    公开(公告)号：US09236171B2

    公开(公告)日：2016-01-12

    申请号：US13880039

    申请日：2011-10-14

    申请人： Tomokazu Ito ,  Hitoshi Ohkubo ,  Yoshihiro Maeda ,  Makoto Morita ,  Toshiyuki Anbo ,  Kyohei Tonoyama ,  Manabu Ohta

    发明人： Tomokazu Ito ,  Hitoshi Ohkubo ,  Yoshihiro Maeda ,  Makoto Morita ,  Toshiyuki Anbo ,  Kyohei Tonoyama ,  Manabu Ohta

    IPC分类号： H01F5/00 ,  H01F27/28 ,  H01F3/08 ,  H01F17/04 ,  H01F27/32 ,  H01F41/04 ,  H01F27/255

    CPC分类号： H01F3/08 ,  H01F5/003 ,  H01F17/04 ,  H01F27/255 ,  H01F27/324 ,  H01F41/04 ,  H01F2017/048 ,  Y10T29/4902 ,  Y10T29/49075

    摘要： A coil component includes: an insulating resin layer provided between a first planar spiral conductor formed on a back surface of a first substrate and a second planer spiral conductor formed on a back surface of a second substrate; an upper core covering a third second planer spiral conductor formed on a front surface of the first substrate on which the insulating resin layer is formed; and a lower core covering a fourth planer spiral conductor formed on a front surface of the second substrate on which the insulating resin layer is formed. One of the upper and lower cores is formed of a metal-magnetic-powder-containing resin. The coil component includes connecting portions disposed respectively at center and outside portions of each of the first and second substrates so as to physically connect the upper and lower cores.

    摘要翻译： 线圈部件包括：绝缘树脂层，设置在形成在第一基板的背面上的第一平面螺旋导体和形成在第二基板的背面上的第二平面螺旋导体之间; 覆盖形成在其上形成有绝缘树脂层的第一基板的前表面上的第三第二平面螺旋形导体的上芯; 以及覆盖形成在其上形成有绝缘树脂层的第二基板的前表面上的第四平面螺旋形导体的下芯。 上下芯之一由含金属磁粉的树脂形成。 线圈部件包括分别设置在第一和第二基板中的每一个的中心部分和外部部分的连接部分，以物理地连接上部和下部芯部。