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    Multi-sensor reader having oppositely biased sensing layers
    12.
    发明授权
    Multi-sensor reader having oppositely biased sensing layers 有权

    公开(公告)号：US10468055B1

    公开(公告)日：2019-11-05

    申请号：US15800846

    申请日：2017-11-01

    Applicant: Seagate Technology LLC

    Inventor： Victor Sapozhnikov ,  Mohammed Shariat Ullah Patwari ,  Scott Wilson Stokes

    IPC: G11B5/39 ,  G11B5/11

    Abstract: A multi-sensor reader includes first and second read sensors. The first read sensor includes a first sensor stack including a sensing layer having a magnetization that changes according to an external magnetic field, and a first biasing component configured to magnetically bias the sensing layer of the first sensor stack in a first direction. The second read sensor includes a second sensor stack including a sensing layer having a magnetization that changes according to an external magnetic field, and a second biasing component configured to magnetically bias the sensing layer of the second sensor stack in a second direction that is substantially opposite the first direction.

    Reader with shape optimized for higher SNR
    13.
    发明授权
    Reader with shape optimized for higher SNR 有权

    公开(公告)号：US11004466B1

    公开(公告)日：2021-05-11

    申请号：US16800775

    申请日：2020-02-25

    Applicant: Seagate Technology LLC

    Inventor： Victor Sapozhnikov ,  Taras Grigorievich Pokhil ,  Mohammed Shariat Ullah Patwari ,  Yonghua Chen

    IPC: G11B5/39 ,  G11B5/31

    Abstract: A recording head that includes a reader having a front end at a bearing surface of the recording head and a rear end behind the bearing surface. The reader has a non-rectangular shape with a front-end width that is less than an average width of the reader. A first bias element is positioned proximate to a first side of the reader, and a second bias element is positioned proximate to a second side of the reader. Each of the first and second bias elements has a bias level that is a function of a ratio of the front-end width to the average width of the reader.

    Selectable readers for better performance
    14.
    发明授权
    Selectable readers for better performance 有权

    公开(公告)号：US10049690B1

    公开(公告)日：2018-08-14

    申请号：US15671482

    申请日：2017-08-08

    Applicant: Seagate Technology LLC

    Inventor： Victor Sapozhnikov ,  Taras Grigorievich Pokhil ,  Mohammed Shariat Ullah Patwari

    IPC: G11B5/127 ,  G11B5/31

    Abstract: A method of forming a read head. The method includes forming first and second read sensors that are substantially trapezoidal in shape. A first read measurement is performed on a storage medium using the first read sensor. A second read measurement is performed on the storage medium using the second read sensor. Based on a comparison of the first and second read measurements to a predetermined quantity, either the first read sensor or the second read sensor is selected to be operational in a data storage device.

    Multiple sensor magnetic reproducing device with reduced inter-sensor spacing
    18.
    发明授权
    Multiple sensor magnetic reproducing device with reduced inter-sensor spacing 有权
    具有减小传感器间距的多传感器磁再现装置

    公开(公告)号：US09536549B1

    公开(公告)日：2017-01-03

    申请号：US14826798

    申请日：2015-08-14

    Applicant: Seagate Technology LLC

    Inventor： Zhiguo Ge ,  Victor Sapozhnikov ,  Shaun E. Mckinlay ,  Eric W. Singleton ,  Jae Young Yi ,  Mohammed Shariat Ullah Patwari

    IPC: G11B5/39 ,  G11B5/127

    CPC classification number: G11B5/3912 ,  G11B5/3948 ,  G11B5/397

    Abstract: A multi-sensor reader that includes a first sensor that has a sensor stack, which includes a free layer (FL) that has a magnetization that changes according to an external magnetic field. The first sensor also includes a shielding structure that is positioned over the sensor stack. The multi-sensor reader also includes a second sensor stacked over the first sensor. The second sensor includes a sensor stack, which includes a FL that has a magnetization that changes according to the external magnetic field. The multi-sensor reader further includes an isolation layer between the first sensor and the second sensor. A FL-to-FL spacing reduction feature is included in at least one of the isolation layer or the shielding structure.

    Abstract translation: 一种多传感器读取器，其包括具有传感器堆叠的第一传感器，该传感器堆叠包括具有根据外部磁场而变化的磁化的自由层（FL）。 第一传感器还包括位于传感器堆叠上方的屏蔽结构。 多传感器读取器还包括堆叠在第一传感器上的第二传感器。 第二传感器包括传感器堆，其包括具有根据外部磁场而变化的磁化的FL。 多传感器读取器还包括在第一传感器和第二传感器之间的隔离层。 在隔离层或屏蔽结构中的至少一个中包括FL-to-FL间隔缩小特征。

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