知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

239 records (took 0.027 seconds)

    STABILIZING LAYERED STRUCTURE FOR MAGNETIC TAPE HEADS
    93.
    发明申请
    STABILIZING LAYERED STRUCTURE FOR MAGNETIC TAPE HEADS 有权

    公开(公告)号：US20170294198A1

    公开(公告)日：2017-10-12

    申请号：US15097174

    申请日：2016-04-12

    Applicant: International Business Machines Corporation

    Inventor： Robert G. Biskeborn ,  Robert E. Fontana, JR. ,  Calvin S. Lo

    IPC: G11B5/187 ,  G11B5/008

    CPC classification number: G11B5/1877 ,  G11B5/00813 ,  G11B5/00826 ,  G11B5/3912 ,  G11B5/3948 ,  G11B5/3977

    Abstract: An apparatus according to one embodiment includes an array of magnetic read transducers each having a current-perpendicular-to-plane sensor, magnetic shields on opposite sides of the sensor in an intended direction of media travel thereacross, and a stabilizing layered structure between at least one of the magnetic shields and the sensor. The stabilizing layered structure has an antiferromagnetic layer, a first ferromagnetic layer adjacent the antiferromagnetic layer, and a second ferromagnetic layer. The antiferromagnetic layer pins a magnetization direction in the first ferromagnetic layer along an antiferromagnetic polarized direction of the antiferromagnetic layer. An antiparallel coupling layer is positioned between the ferromagnetic layers such that a magnetization direction in the second ferromagnetic layer is opposite the magnetization direction in the first ferromagnetic layer.

    Two-dimensional magnetic recording device with center shield stabilized by recessed AFM layer
    95.
    发明授权
    Two-dimensional magnetic recording device with center shield stabilized by recessed AFM layer 有权
    具有中心屏蔽的二维磁记录装置通过凹陷AFM层稳定

    公开(公告)号：US09570100B1

    公开(公告)日：2017-02-14

    申请号：US14918829

    申请日：2015-10-21

    Applicant: HGST Netherlands B.V.

    Inventor： James Freitag ,  Zheng Gao ,  Stefan Maat

    IPC: G11B5/39 ,  G11B5/11 ,  G11B5/33

    CPC classification number: G11B5/3912 ,  G11B5/112 ,  G11B5/3948 ,  G11B5/397 ,  G11B5/398 ,  G11B5/4886

    Abstract: A two-dimensional magnetic recording (TDMR) read head with an antiferromagnetic (AFM) layer recessed behind a center shield. The TDMR read head comprises a first read sensor and a center shield over the first read sensor, wherein the center shield has a first thickness at an air-bearing surface (ABS) and a second thickness at a back surface, the first thickness being greater than the second thickness. A ferromagnetic layer is disposed over a portion of the center shield, wherein the ferromagnetic layer is recessed from the ABS. The TDMR read head also includes an antiferromagnetic layer over the ferromagnetic layer and a second read sensor over the antiferromagnetic layer. By recessing the AFM layer away from the ABS, the down-track spacing between read sensors is reduced, thereby improving TDMR read head performance.

    Abstract translation: 二维磁记录（TDMR）读头与反铁磁（AFM）层在中心屏蔽后面凹陷。 TDMR读取头包括在第一读取传感器上的第一读取传感器和中心屏蔽，其中中心屏蔽在空气轴承表面（ABS）处具有第一厚度，在后表面具有第二厚度，第一厚度更大 比第二厚度。 铁磁层设置在中心屏蔽的一部分上，其中铁磁层从ABS凹入。 TDMR读取头还包括在铁磁层上的反铁磁层和在反铁磁层上的第二读取传感器。 通过使AFM层远离ABS，读取传感器之间的下行轨道间距减小，从而提高TDMR读取头的性能。

    MAGNETORESISTIVE DEVICE WITH LAMINATE INSERTION LAYER IN THE FREE LAYER
    96.
    发明申请
    MAGNETORESISTIVE DEVICE WITH LAMINATE INSERTION LAYER IN THE FREE LAYER 有权
    具有层状插入层的磁性器件在自由层中

    公开(公告)号：US20170018703A1

    公开(公告)日：2017-01-19

    申请号：US14797759

    申请日：2015-07-13

    Applicant: HGST Netherlands B.V.

    Inventor： James FREITAG ,  Zheng GAO

    IPC: H01L43/02 ,  H01L43/10 ,  H01L43/12 ,  H01L43/08

    CPC classification number: H01L27/222 ,  G11B5/3906 ,  G11B5/3948 ,  H01L43/08 ,  H01L43/10 ,  H01L43/12

    Abstract: A magneto-resistive (MR) device and process for making the MR device are disclosed. The MR device has a pinned layer, a spacer layer proximate to the pinned layer, and a free layer proximate to the spacer layer. The free layer comprises a first magnetic layer proximate to the spacer layer, the first magnetic layer having a positive magnetostriction, a laminate magnetic insertion layer proximate to the first magnetic layer, and a second magnetic layer proximate to the magnetic insertion layer, the second magnetic layer having a negative magnetostriction. The laminate magnetic insertion layer has a first magnetic sublayer and a first non-magnetic sublayer proximate to the first magnetic sublayer. With the disclosed laminate magnetic insertion layer, the free layer has a low overall magnetostriction and results in a MR device with a high MR ratio.

    Abstract translation: 公开了用于制造MR器件的磁阻（MR）器件和工艺。 MR装置具有钉扎层，靠近被钉扎层的间隔层和靠近间隔层的自由层。 自由层包括靠近间隔层的第一磁性层，具有正磁致伸缩的第一磁性层，靠近第一磁性层的层叠磁性插入层和靠近磁性插入层的第二磁性层，第二磁性层 层具有负的磁致伸缩。 叠层磁性插入层具有第一磁性子层和靠近第一磁性子层的第一非磁性子层。 利用所公开的层叠磁性插入层，自由层具有低的总体磁致伸缩，并导致具有高MR比的MR器件。

    MULTI-SENSOR READER STRUCTURE HAVING A CURRENT PATH WITH INCREASED SIZE TO REDUCE NOISE
    98.
    发明申请
    MULTI-SENSOR READER STRUCTURE HAVING A CURRENT PATH WITH INCREASED SIZE TO REDUCE NOISE 有权
    具有增加大小的电流路径以减少噪声的多传感器读取器结构

    公开(公告)号：US20160217813A1

    公开(公告)日：2016-07-28

    申请号：US14604617

    申请日：2015-01-23

    Applicant: HGST NETHERLANDS B.V.

    Inventor： Hideki Mashima ,  Kenichi Meguro ,  Nobuo Yoshida ,  Toyoshige Noridomi ,  Tomohiro Saito ,  Kaori Suzuki

    IPC: G11B5/39 ,  G11B5/127

    CPC classification number: G11B5/3912 ,  G11B5/3932 ,  G11B5/3948 ,  G11B5/3958 ,  G11B5/397

    Abstract: In one embodiment, a magnetic head includes a lower magnetic shield layer positioned at a media-facing surface, a pinned layer positioned above the lower magnetic shield layer at the media-facing surface, at least two MR elements extending in an element height direction by a first length positioned above the pinned layer and separated in a cross-track direction by an inner layer, bias layers extending in the element height direction by a second length positioned on outside edges of the MR elements and the pinned layer, and current paths positioned above and in electrical communication with the bias layers on either side of the inner layer, each current path extending in the element height direction away from the media-facing surface by a third length.

    Abstract translation: 在一个实施例中，磁头包括位于面向介质表面的下磁屏蔽层，位于面向媒体的表面上的下磁屏蔽层上方的被钉扎层，至少两个沿单元高度方向延伸的MR元件， 所述第一长度位于所述被钉扎层上方并且在交叉轨道方向上由内层分离，所述偏置层在所述元件高度方向上延伸位于所述MR元件和被钉扎层的外边缘上的第二长度，并且所述电流路径被定位 并且与内层的任一侧上的偏置层电连通，每个电流路径在元件高度方向上延伸离开面向介质的表面第三长度。

    TMR HEAD DESIGN WITH INSULATIVE LAYERS FOR SHORTING MITIGATION
    99.
    发明申请
    TMR HEAD DESIGN WITH INSULATIVE LAYERS FOR SHORTING MITIGATION 有权
    具有绝缘层的TMR头设计用于短路

    公开(公告)号：US20160196841A1

    公开(公告)日：2016-07-07

    申请号：US15054071

    申请日：2016-02-25

    Applicant: International Business Machines Corporation

    Inventor： Robert G. Biskeborn ,  Robert E. Fontana, JR. ,  Jason Liang ,  Calvin S. Lo

    IPC: G11B5/39

    CPC classification number: G11B5/3912 ,  G11B5/11 ,  G11B5/39 ,  G11B5/3909 ,  G11B5/3932 ,  G11B5/3948 ,  G11B5/398 ,  G11B5/40

    Abstract: An apparatus according to one embodiment includes a transducer structure having: a lower shield having recesses in an upper surface thereof; an upper shield formed above the lower shield; a sensor between the upper and lower shields, the recesses being positioned on opposite sides of the sensor; and a first insulating layer in the recesses in the upper surface of the lower shield. An upper surface of the first insulating layer is coplanar with an uppermost portion of the upper surface of the lower shield. An apparatus according to another embodiment includes a transducer structure having: a lower shield having recesses in an upper surface thereof; an upper shield formed above the lower shield, the upper shield having recesses in a lower surface thereof; a sensor between the shields, the recesses being positioned on opposite sides of the sensor; and insulating layers in the recesses in the shields.

    Abstract translation: 根据一个实施例的装置包括换能器结构，其具有：在其上表面中具有凹部的下屏蔽件; 形成在下屏蔽上方的上屏蔽件; 在上和下屏蔽之间的传感器，凹部位于传感器的相对侧上; 以及在下屏蔽的上表面的凹部中的第一绝缘层。 第一绝缘层的上表面与下屏蔽的上表面的最上部共面。 根据另一实施例的装置包括换能器结构，其具有：具有在其上表面中的凹部的下屏蔽件; 形成在所述下屏蔽件上方的上屏蔽件，所述上屏蔽件在其下表面具有凹部; 在屏蔽之间的传感器，凹槽位于传感器的相对侧上; 并且在屏蔽件的凹部中具有绝缘层。

    Leads coupled to top and bottom reader stacks of a reader
    100.
    发明授权
    Leads coupled to top and bottom reader stacks of a reader 有权
    引线耦合读取器的顶部和底部读取器堆叠

    公开(公告)号：US09361910B2

    公开(公告)日：2016-06-07

    申请号：US14323119

    申请日：2014-07-03

    Applicant: Seagate Technology LLC

    Inventor： Shaun Eric McKinlay ,  Eric Walter Singleton ,  Samuel Martin Barthell

    IPC: G11B5/39 ,  G11B5/115 ,  G11B5/29 ,  G11B5/265 ,  G11B5/11

    CPC classification number: G11B5/115 ,  G11B5/11 ,  G11B5/265 ,  G11B5/2652 ,  G11B5/29 ,  G11B5/3909 ,  G11B5/3912 ,  G11B5/3948 ,  G11B5/3958 ,  G11B2005/3996

    Abstract: A reader includes top and bottom reader stacks that are offset relative to each other in a downtrack direction and disposed between a top shield and a bottom shield. Top side shields surround the top reader stack in a crosstrack direction, and bottom side shields surround the bottom reader stack in the crosstrack direction. A middle shield is between the top and bottom reader stacks and the top and bottom side shields. The middle shield includes a common electrical conductive path coupled to the top and bottom reader stacks. A middle lead is coupled to an edge of the middle shield.

    Abstract translation: 阅读器包括顶部和底部读取器堆叠，其在倾斜方向上相对于彼此偏移并且设置在顶部屏蔽和底部屏蔽之间。 顶部屏蔽层以交叉方向围绕顶部读取器堆叠，并且底部侧屏蔽围绕底部读取器堆叠在横向方向上。 中间的屏蔽是在顶部和底部读取器堆叠之间以及顶部和底部侧面屏蔽之间。 中间屏蔽包括耦合到顶部和底部读取器堆叠的公共导电路径。 中间导线连接到中间屏蔽的边缘。

Patent Agency Ranking