公开(公告)号：US20170154641A1

公开(公告)日：2017-06-01

申请号：US14955878

申请日：2015-12-01

Applicant: HGST Netherlands B.V.

Inventor： Wenqin Hao ,  Quang Le ,  Xiaoyong Liu ,  Suping Song ,  Lei Wang

IPC: G11B5/31

CPC classification number: G11B5/3912 ,  G11B5/3932 ,  G11B5/3935 ,  G11B5/3954 ,  G11B5/3958 ,  G11B5/397 ,  G11B5/3974 ,  G11B5/3977 ,  G11B5/3987 ,  G11B2005/3996

Abstract: A scissor type magnetic sensor for magnetic data recording having a flux closure magnetic side shield structure. The magnetic sensor has a magnetic side shield structure that includes a non-magnetic layer within a magnetic material layer, with the non-magnetic layer being removed from the sensor stack so as to define upper and lower magnetic portions of the magnetic structure that are separated from one another at a region away from the sensor stack. The upper and lower magnetic portions are connected with one another in a region near the sensor stack so as to magnetic flux closure structure. The novel magnetic side shield structure provides net neutral magnetization that does not provide an inadvertent biasing to the magnetic free layers of the magnetic sensor.

公开(公告)号：US09472215B1

公开(公告)日：2016-10-18

申请号：US14745282

申请日：2015-06-19

Applicant: HGST Netherlands B.V.

Inventor： Hongquan Jiang ,  Quang Le ,  Xiaoyong Liu ,  Lei Wang

IPC: G11B5/39

CPC classification number: G11B5/3912 ,  G11B5/3932 ,  G11B5/3945 ,  G11B5/398

Abstract: According to one embodiment, a magnetic sensor includes a lower scissor free layer, and an upper scissor free layer above the lower scissor free layer in a track direction, where at least one of the scissor free layers has a generally T-shaped periphery. According to another embodiment, a method includes forming a lower scissor free layer, and forming an upper scissor free layer above the lower scissor free layer in a track direction, where at least one of the one of the scissor free layers has a generally T-shaped periphery.

Abstract translation: 根据一个实施例，磁传感器包括下部无剪切层和沿着轨道方向的上部无剪切层上方的上部无剪切层，其中至少一个无剪切层具有大致T形的周边。 根据另一个实施方案，一种方法包括形成下部无剪切层，以及在轨道方向上在所述下部无剪切层之上形成上部无剪切层，其中所述一个所述无剪切层中的至少一个具有大致T- 形外围。

公开(公告)号：US09679591B1

公开(公告)日：2017-06-13

申请号：US14955878

申请日：2015-12-01

Applicant: HGST Netherlands B.V.

Inventor： Wenqin Hao ,  Quang Le ,  Xiaoyong Liu ,  Suping Song ,  Lei Wang

IPC: G11B5/39

CPC classification number: G11B5/3912 ,  G11B5/3932 ,  G11B5/3935 ,  G11B5/3954 ,  G11B5/3958 ,  G11B5/397 ,  G11B5/3974 ,  G11B5/3977 ,  G11B5/3987 ,  G11B2005/3996

Abstract: A scissor type magnetic sensor for magnetic data recording having a flux closure magnetic side shield structure. The magnetic sensor has a magnetic side shield structure that includes a non-magnetic layer within a magnetic material layer, with the non-magnetic layer being removed from the sensor stack so as to define upper and lower magnetic portions of the magnetic structure that are separated from one another at a region away from the sensor stack. The upper and lower magnetic portions are connected with one another in a region near the sensor stack so as to magnetic flux closure structure. The novel magnetic side shield structure provides net neutral magnetization that does not provide an inadvertent biasing to the magnetic free layers of the magnetic sensor.

公开(公告)号：US20170092303A1

公开(公告)日：2017-03-30

申请号：US14871747

申请日：2015-09-30

Applicant: HGST Netherlands B.V.

Inventor： Hongquan Jiang ,  Quang Le ,  Xiaoyong Liu ,  Masaya Nishioka ,  Lei Wang

IPC: G11B5/31

CPC classification number: G11B5/315 ,  G11B5/3906 ,  G11B5/3912 ,  G11B5/3932

Abstract: A scissor type magnetic sensor having an in stack magnetic bias structure for biasing first and second magnetic free layers. The in stack bias structure can include a magnetic tab that is exchange coupled with a magnetic shield so as to pin its magnetization in a desired direction parallel with the media facing surface. The magnetic tab can be separated from the free magnetic layer by a non-magnetic de-coupling layer that magnetically de-couples the magnetic tab from the magnetic free layer. A magnetostatic field from the edges of the magnetic tab can provide magnetic biasing for the magnetic free layer. Alternatively, the magnetic tab can be separated from the magnetic free layer by a very thin non-magnetic dusting layer that provides a weak magnetic exchange coupling (either parallel or anti-parallel) between the magnetic tab and the magnetic free layer.

公开(公告)号：US09280992B1

公开(公告)日：2016-03-08

申请号：US14811754

申请日：2015-07-28

Applicant: HGST Netherlands B.V.

Inventor： Hongquan Jiang ,  Quang Le ,  Xiaoyong Liu ,  Lei Wang

IPC: G11B5/39

CPC classification number: G11B5/39 ,  G11B5/3912 ,  G11B5/3932 ,  G11B5/398 ,  H01L43/08

Abstract: In one embodiment, a magnetic sensor includes: a lower scissor free layer; an upper scissor free layer above the lower scissor free layer; a separation layer between the upper and lower scissor free layers; and upper stabilization layers on opposite sides of the upper scissor free layer in a cross-track direction, where lower surfaces of the upper stabilization layers are above a plane extending along a top surface of the separation layer. In another embodiment, a magnetic sensor includes: a lower scissor free layer; an upper scissor free layer above the lower scissor free layer; a separation layer between the upper and lower scissor free layers; and lower stabilization layers on opposite sides of the lower scissor free layer in a cross-track direction, where upper surfaces of the lower stabilization layers are below a plane extending along a bottom surface of the separation layer.

Abstract translation: 在一个实施例中，磁传感器包括：下部无剪切层; 下部剪叉自由层上方的上部无剪切层; 上下无剪切层之间的分离层; 以及在上部无剪切层的相对侧上的交叉轨道方向的上部稳定层，其中上部稳定层的下表面在沿着分离层的顶表面延伸的平面之上。 在另一个实施例中，磁传感器包括：下部无剪切层; 下部剪叉自由层上方的上部无剪切层; 上下无剪切层之间的分离层; 以及在交叉轨道方向上的下部无剪切层的相对侧上的下部稳定层，其中下部稳定层的上表面在沿着分离层的底表面延伸的平面的下方。