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    Perpendicular magnetic recording head having a stepped portion and method of manufacturing the same
    31.
    发明授权
    Perpendicular magnetic recording head having a stepped portion and method of manufacturing the same 有权
    具有阶梯部的垂直磁记录头及其制造方法

    公开(公告)号：US07643246B2

    公开(公告)日：2010-01-05

    申请号：US11518723

    申请日：2006-09-11

    申请人： Hisayuki Yazawa ,  Toshinori Watanabe

    发明人： Hisayuki Yazawa ,  Toshinori Watanabe

    IPC分类号： G11B5/187 ,  G11B5/23

    CPC分类号： G11B5/1278 ,  G11B5/1871 ,  G11B5/3116

    摘要： A magnetic recording head and a method of manufacturing the magnetic recording head are provided. The perpendicular magnetic recording head includes a main magnetic pole layer and a return path layer that face each other with a gap therebetween in a lamination direction. A non-magnetic insulating layer is interposed between the main magnetic pole layer and the return path layer. At least one stepped portion is formed on a facing surface of at least one of the main magnetic pole layer and the return path layer.

    摘要翻译： 提供磁记录头和制造磁记录头的方法。 垂直磁记录头包括在层叠方向上彼此面对间隙的主磁极层和返回路径层。 在主磁极层和返回路径层之间插入非磁性绝缘层。 至少一个阶梯部分形成在主磁极层和返回路径层中的至少一个的面对表面上。

    Electric rotary machine
    33.
    发明申请
    Electric rotary machine 失效
    电动旋转机

    公开(公告)号：US20060138876A1

    公开(公告)日：2006-06-29

    申请号：US11226299

    申请日：2005-09-15

    申请人： Toshiaki Ueda ,  Takeshi Sakai ,  Susumu Terumoto ,  Toshinori Watanabe

    发明人： Toshiaki Ueda ,  Takeshi Sakai ,  Susumu Terumoto ,  Toshinori Watanabe

    IPC分类号： H02K1/04 ,  H02K9/00

    CPC分类号： H02K9/19 ,  H02K3/50 ,  H02K5/08 ,  H02K9/22

    摘要： In the stator of a electric rotary machine in which heat conductive insulation resin is filled at the end portions of a stator coil, the material of a stator core, the stator coil, the heat conductive insulation resin and a frame is selected such that a linear thermal expansion coefficient α1 of the stator core, a linear thermal expansion coefficient α2 of the stator coil, a linear thermal expansion coefficient α3 of the heat conductive insulation resin being filled and a linear thermal expansion coefficient α4 of the frame satisfy a relation that α1

    摘要翻译： 在定子线圈的端部填充导热绝缘树脂的电动旋转机械的定子中，选择定子铁心，定子线圈，导热绝缘树脂和框架的材料，使得线性 定子铁芯的热膨胀系数α1，定子线圈的线性热膨胀系数α2，填充的导热绝缘树脂的线性热膨胀系数α3和框架的线性热膨胀系数α4满足α1< α2<α4<=α3。 冷却介质路径通过压铸成型一体地形成在由铝制成的框架内。

    Magnetoresistive sensor and its manufacturing method
    38.
    发明授权
    Magnetoresistive sensor and its manufacturing method 有权
    磁阻传感器及其制造方法

    公开(公告)号：US06201465B1

    公开(公告)日：2001-03-13

    申请号：US09432456

    申请日：1999-11-02

    申请人： Masamichi Saito ,  Toshinori Watanabe ,  Kiyoshi Sato ,  Toshihiro Kuriyama

    发明人： Masamichi Saito ,  Toshinori Watanabe ,  Kiyoshi Sato ,  Toshihiro Kuriyama

    IPC分类号： H01L4300

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3116 ,  G11B5/3903 ,  G11B5/3932 ,  G11B2005/3996 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49052

    摘要： A magnetoresistive sensor is fabricated as follows. First of all, first antiferromagnetic layers are created on the upper surfaces on both sides of a lower-gap layer, sandwiching a track width on the upper surface of the lower-gap layer. Then, a free magnetic layer, a nonmagnetic electrically conductive layer, a pinned magnetic layer and a second antiferromagnetic layer are stacked on the first antiferromagnetic layers and a portion on the track width one after another in the order the layers are enumerated. Since the free magnetic layer is created after the first antiferromagnetic layer, the free magnetic layer and the first antiferromagnetic layer are adhered to each other with a high degree of reliability. When the direction of magnetization in the free magnetic layer is changed by an external magnetic field, the electrical resistance of the magnetoresistive sensor also changes. The change in electrical resistance is, in turn, used for detecting the external magnetic field. Since the first antiferromagnetic layers put the free magnetic layer in a single-domain state in the X direction, the amount of Barkhausen noise can be reduced.

    摘要翻译： 如下制造磁阻传感器。 首先，在下间隙层的两侧的上表面上形成第一反铁磁性层，在下间隙层的上表面夹着轨道宽度。 然后，依次层叠第一反铁磁层上的自由磁性层，非磁性导电层，钉扎磁性层和第二反铁磁性层，并且沿轨道宽度的一部分依次层叠。 由于在第一反铁磁层之后产生自由磁性层，所以自由磁性层和第一反铁磁性层以高可靠性彼此粘合。 当通过外部磁场改变自由磁性层中的磁化方向时，磁阻传感器的电阻也改变。 电阻的变化又用于检测外部磁场。 由于第一反铁磁性层将自由磁性层置于X方向的单畴状态，所以可降低Barkhausen噪声的量。

    Magnetoresistive sensor and head
    39.
    发明授权
    Magnetoresistive sensor and head 有权
    磁阻传感器和磁头

    公开(公告)号：US06153062A

    公开(公告)日：2000-11-28

    申请号：US208354

    申请日：1998-12-10

    申请人： Masamichi Saito ,  Toshinori Watanabe

    发明人： Masamichi Saito ,  Toshinori Watanabe

    IPC分类号： G01R33/09 ,  G11B5/31 ,  G11B5/39 ,  G11C11/16 ,  H01F10/32 ,  H01L43/08 ,  H01L43/12 ,  C23C14/35

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3903 ,  G11B5/3948 ,  G11C11/16 ,  H01F10/3263 ,  H01F10/3268 ,  H01L43/08 ,  H01L43/12 ,  G11B2005/3996 ,  G11B5/3163

    摘要： PtMn films are used as antiferromagnetic layers of a dual spin-valve type magnetoresistive sensor. An exchange anisotropic magnetic field is achieved regardless of whether the PtMn film is formed over or under the pinned magnetic layer. Also, an effective exchange anisotropic magnetic field is produced even with heat treatment at a relatively low temperature. Alternatively, a PtMn film is used as an antiferromagnetic layer of a spin-valve film laminate. The use of a PtMn film enables a sufficient exchange anisotropic magnetic field to be produced even with a relatively low heat treatment temperature and a relatively small film thickness. Therefore, the number of total layers of the spin-valve film laminate can be increased to increase a magnetoresistance ratio, and a total thickness of the spin-valve film laminate can be made relatively small.

    摘要翻译： PtMn膜用作双自旋阀型磁阻传感器的反铁磁层。 无论PtMn膜是否形成在被钉扎的磁性层之上或之下，都实现了交换各向异性磁场。 此外，即使在相对低的温度下进行热处理，也产生有效的交换各向异性磁场。 或者，使用PtMn膜作为自旋阀膜层叠体的反铁磁层。 使用PtMn膜即使在相对低的热处理温度和相对较小的膜厚度下也能够产生充分的交换各向异性磁场。 因此，可以增加自旋阀膜层压体的总层数以增加磁阻比，并且可以使自旋阀膜层叠体的总厚度相对较小。