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196 条记录 (耗时 0.023 秒)

    Magnetic stabilization and scissor design for anomalous hall effect magnetic read sensor
    4.
    发明授权
    Magnetic stabilization and scissor design for anomalous hall effect magnetic read sensor 有权
    用于异常霍尔效应磁读取传感器的磁稳定和剪刀设计

    公开(公告)号：US09293160B1

    公开(公告)日：2016-03-22

    申请号：US14616621

    申请日：2015-02-06

    申请人： HGST Netherlands B.V.

    发明人： Goran Mihajlovic ,  Neil Smith

    IPC分类号： G11B5/37

    CPC分类号： G11B5/37 ,  G11B5/374

    摘要： A system comprising a sensor with a free layer that exhibits an anomalous Hall effect is disclosed. Further, the sensor has a magnetic underlayer below the free layer in a track direction for biasing a magnetic orientation of the free layer in a first magnetic orientation, and a magnetic overlayer above the free layer in the track direction for biasing the magnetic orientation of the free layer in the first magnetic orientation. Still further, the sensor has a lower nonmagnetic spacer layer between the magnetic underlayer and the free layer, and an upper nonmagnetic spacer layer between the magnetic overlayer and the free layer.

    摘要翻译： 公开了一种包括具有表现出异常霍尔效应的自由层的传感器的系统。 此外，传感器在轨道方向上具有在自由层下方的磁性底层，用于在第一磁性取向上偏置自由层的磁性取向，以及在轨道方向上的自由层上方的磁性覆盖层，用于偏置磁性取向 自由层在第一磁方向。 此外，传感器在磁性底层和自由层之间具有较低的非磁性间隔层，以及在磁性覆盖层和自由层之间的上部非磁性间隔层。

    Magnetic sensor, magnetic head, and magnetic memory by using spin Hall devices
    5.
    发明授权
    Magnetic sensor, magnetic head, and magnetic memory by using spin Hall devices 有权
    磁性传感器，磁头和磁记忆体采用旋转霍尔器件

    公开(公告)号：US08295006B2

    公开(公告)日：2012-10-23

    申请号：US12314769

    申请日：2008-12-16

    申请人： Ryoko Sugano ,  Masahiko Ichimura ,  Hiromasa Takahashi

    发明人： Ryoko Sugano ,  Masahiko Ichimura ,  Hiromasa Takahashi

    IPC分类号： G11B5/37 ,  G11B5/33 ,  G11B5/127

    CPC分类号： G11B5/374 ,  G01R33/1284 ,  G11B5/378 ,  G11C11/161 ,  G11C11/18 ,  Y10T428/1107

    摘要： A magnetic sensor reduces thermal fluctuation and realizes high-sensitive signal detection using a spin Hall device of a simple structure configured with only one magnetic layer. The magnetic sensor includes a stacked film in which a nonmagnetic spin Hall layer, a nonmagnetic insulator layer, and a magnetic layer are stacked, an electrode nonmagnetic terminal pair connected to a side surface of the nonmagnetic spin Hall layer, and a unit applying a current in a film thickness direction of the stacked film. A thickness of the nonmagnetic spin Hall layer is thinner than twice a spin diffusion length of a material constituting the nonmagnetic spin Hall layer. A magnetization direction of the magnetic layer magnetized by an external magnetic field is detected due to the polarity of a voltage across both ends of the electrode nonmagnetic terminal pair.

    摘要翻译： 磁传感器减少热波动，并使用仅配置有一个磁性层的简单结构的旋转霍尔器件来实现高灵敏度信号检测。 磁传感器包括层叠非磁性旋转霍尔层，非磁性绝缘体层和磁性层的叠层膜，与非磁性旋转霍尔层的侧面连接的电极非磁性端子对，以及施加电流的单元 在层叠膜的膜厚度方向上。 非磁性旋转霍尔层的厚度比构成非磁性旋转霍尔层的材料的自旋扩散长度的两倍更薄。 由于电极非磁性端子对的两端的电压的极性，检测由外部磁场磁化的磁性层的磁化方向。

    Magnetic head having a hall effect sensor and circuit for detecting recorded bits from magnetic recording media
    6.
    发明授权
    Magnetic head having a hall effect sensor and circuit for detecting recorded bits from magnetic recording media 失效
    具有霍尔效应传感器的磁头和用于检测来自磁记录介质的记录位的电路

    公开(公告)号：US07440227B2

    公开(公告)日：2008-10-21

    申请号：US11069414

    申请日：2005-02-28

    申请人： Amitava Chattopadhyay ,  Stefan Maat ,  Ernesto E. Marinero ,  Bruce Alvin Gurney

    发明人： Amitava Chattopadhyay ,  Stefan Maat ,  Ernesto E. Marinero ,  Bruce Alvin Gurney

    IPC分类号： G11B5/37

    CPC分类号： G11B5/376

    摘要： A magnetic head has a sensor which employs the “Hall effect”. In one illustrative example, the sensor includes a generally planar body made of a semiconductor heterostructure; first and second contacts comprising first and second drains, respectively, which are formed over a first end of the body and spaced equally apart from a centerline of the body; and a third contact comprising a source formed over a second end of the body which is opposite the first end of the body. The semiconductor heterostructure is comprised of a high mobility two-dimensional electron or hole gas close to an air bearing surface (ABS) of the magnetic head so as to be exposed to magnetic field lines substantially normal to it from magnetically recorded bits. Advantageously, the sensor does not require magnetic materials utilized in conventional sensors and therefore does not suffer from magnetic noise associated therewith.

    摘要翻译： 磁头具有采用“霍尔效应”的传感器。 在一个说明性示例中，传感器包括由半导体异质结构制成的大体平面体; 第一和第二触头分别包括第一和第二漏极，它们分别形成在主体的第一端上并且与主体的中心线间隔开; 以及第三触点，其包括形成在所述主体的与所述主体的第一端相对的第二端上的源。 半导体异质结构包括靠近磁头的空气轴承表面（ABS）的高迁移率二维电子或空穴气体，以便从磁记录钻头暴露于基本垂直于其的磁场线。 有利地，传感器不需要在常规传感器中使用的磁性材料，因此不会与其相关的磁性噪声。

    Optical disc apparatus
    7.
    发明申请
    Optical disc apparatus 失效
    光盘装置

    公开(公告)号：US20080181088A1

    公开(公告)日：2008-07-31

    申请号：US12010858

    申请日：2008-01-30

    申请人： Kenji Okamoto

    发明人： Kenji Okamoto

    IPC分类号： G11B5/37

    CPC分类号： G11B7/22 ,  G11B7/0901 ,  G11B7/0945 ,  G11B7/1376 ,  G11B7/13927 ,  G11B2007/0006 ,  G11B2007/0013

    摘要： An optical disc apparatus in accordance with the present invention includes: a plurality of light sources; an optical system which has at least an objective lens that condenses light beam emitted from the light sources on a recording layer of an optical disc and a collimator lens that is arranged between the light sources and the objective lens; a lens tilting mechanism which tilts the objective lens; a collimator lens driving mechanism which moves the collimator lens along an optical axis direction; and a most appropriate setting deciding portion which decides in a prescribed timing a most appropriate setting about position of the collimator lens and tilting of the objective lens while changing the position of the collimator lens and the tilting of the objective lens utilizing the collimator lens driving mechanism and the lens tilting mechanism.

    摘要翻译： 根据本发明的光盘装置包括：多个光源; 至少具有将从光源发射的光束会聚在光盘的记录层上的物镜和配置在光源与物镜之间的准直透镜的光学系统; 倾斜物镜的透镜倾斜机构; 准直透镜驱动机构，其使准直透镜沿光轴方向移动; 以及最适当的设定决定部，其在规定的定时中，对准直透镜的位置和物镜的倾斜进行最适当的设定，同时利用准直透镜驱动机构改变准直透镜的位置和物镜的倾斜 和透镜倾斜机构。