公开(公告)号：US20160365104A1

公开(公告)日：2016-12-15

申请号：US14740116

申请日：2015-06-15

Applicant: Seagate Technology LLC

Inventor： Zhiguo Ge ,  Shaun E. McKinlay ,  Eric W. Singleton ,  LiWen Tan ,  Jae Young Yi

IPC: G11B5/39

CPC classification number: G11B5/3912 ,  G11B5/397 ,  G11B5/3974 ,  G11B5/398

Abstract: Implementations described and claimed herein include a reader structure, comprising a first reader, including a sensor stack and a top shield structure, the top shield structure comprises a synthetic antiferromagnetic shield (SAF) structure, including a reference layer including at least a layer of NiFe and an impurity additive, an RKKY coupling layer RKKY coupling layer (e.g., Ru layer), and a pinned layer. In another implementation, the RL of the SAF shield structure of a first reader includes at least a layer of amorphous magnetic material. Yet, in another implementation, the SAF shield structure includes an insertion layer of amorphous magnetic material under the SAF shield RL, within the SAF shield RL or between the SAF shield RL and SAF shield Ru.

Abstract translation: 本文描述和要求保护的实施方案包括读取器结构，包括第一读取器，包括传感器堆叠和顶部屏蔽结构，顶部屏蔽结构包括合成反铁磁屏蔽（SAF）结构，其包括至少包括一层NiFe 和杂质添加剂，RKKY耦合层RKKY耦合层（例如，Ru层）和钉扎层。 在另一实施方案中，第一读取器的SAF屏蔽结构的RL至少包括一层非晶磁性材料。 然而，在另一实施方式中，SAF屏蔽结构包括在SAF屏蔽RL之下，SAF屏蔽RL内或SAF屏蔽RL和SAF屏蔽Ru之间的非晶磁性材料的插入层。

公开(公告)号：US09552834B1

公开(公告)日：2017-01-24

申请号：US14867836

申请日：2015-09-28

Applicant: Seagate Technology LLC

Inventor： Victor Boris Sapozhnikov ,  Steven P. Bozeman ,  Mohammed Shariat Ullah Patwari ,  LiWen Tan ,  Jae Young Yi ,  Eric W. Singleton

IPC: G11B5/39

CPC classification number: G11B5/3951 ,  G11B5/3912

Abstract: A multi-sensor reader that includes a first sensor that has a first sensor stack, which includes a sensing layer that has a magnetization that changes according to an external magnetic field. The first sensor also includes a first seed element below the first sensor stack. The multi-sensor reader also includes a second sensor stacked over the first sensor. The second sensor includes a second sensor stack, which includes a sensing layer that has a magnetization that changes according to the external magnetic field. The second sensor also includes a second seed element below the second sensor stack. The second seed element is structurally different from the first seed element and includes a stabilization feature.

Abstract translation: 一种多传感器读取器，其包括具有第一传感器堆叠的第一传感器，其包括具有根据外部磁场而变化的磁化的感测层。 第一传感器还包括位于第一传感器堆栈下方的第一种子元件。 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。 第二传感器包括第二传感器堆，其包括具有根据外部磁场而变化的磁化的感测层。 第二传感器还包括位于第二传感器堆叠下方的第二种子元件。 第二种子元件在结构上不同于第一种子元件并且包括稳定特征。

公开(公告)号：US20170011759A1

公开(公告)日：2017-01-12

申请号：US14793988

申请日：2015-07-08

Applicant: Seagate Technology LLC

Inventor： Zhiguo Ge ,  Shaun E. McKinlay ,  Eric W. Singleton ,  LiWen Tan ,  Jae Young Yi

IPC: G11B5/39 ,  G11B5/127

CPC classification number: G11B5/3932 ,  G11B5/115 ,  G11B5/1272 ,  G11B5/3912 ,  G11B5/3954 ,  G11B5/3974

Abstract: A multi-sensor reader that includes a first sensor that has a sensing layer with a magnetization that changes according to an external magnetic field. The first sensor also includes first and second side biasing magnets having a magnetization substantially along a first direction. The first and second side biasing magnets align the magnetization of the sensing layer substantially along the first direction when the sensing layer is not substantially influenced by the external magnetic field. The multi-sensor reader further includes a second sensor that is stacked over the first sensor. The second sensor includes a reference layer that has a magnetization that is set substantially along a second direction. The first sensor further includes at least one sensor-stabilization feature that counteracts an influence of a magnetic field utilized to set the magnetization of the reference layer of the second sensor in the second direction on the magnetization of at least one of the first and second side biasing magnets in the first direction.

Abstract translation: 一种多传感器读取器，其包括具有根据外部磁场而变化的磁化的感测层的第一传感器。 第一传感器还包括具有基本沿着第一方向的磁化的第一和第二侧偏置磁体。 当感测层基本上不受外部磁场的影响时，第一和第二侧偏置磁体基本上沿着第一方向对准感测层的磁化。 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。 第二传感器包括具有基本沿第二方向设定的磁化的参考层。 第一传感器还包括至少一个传感器稳定特征，其抵消用于将第二传感器的参考层的磁化在第二方向上的磁场的影响抵抗第一和第二侧中的至少一个的磁化 沿第一方向偏压磁铁。

公开(公告)号：US10090008B2

公开(公告)日：2018-10-02

申请号：US15631372

申请日：2017-06-23

Applicant: Seagate Technology LLC

Inventor： Zhiguo Ge ,  Shaun E. McKinlay ,  Eric W. Singleton ,  LiWen Tan ,  Jae Young Yi

IPC: G11B5/39

Abstract: Implementations described and claimed herein include a reader structure, comprising a first reader, including a sensor stack and a top shield structure, the top shield structure comprises a synthetic antiferromagnetic shield (SAF) structure, including a reference layer including at least a layer of NiFe and an impurity additive, an RKKY coupling layer RKKY coupling layer (e.g., Ru layer), and a pinned layer. In another implementation, the RL of the SAF shield structure of a first reader includes at least a layer of amorphous magnetic material. Yet, in another implementation, the SAF shield structure includes an insertion layer of amorphous magnetic material under the SAF shield RL, within the SAF shield RL or between the SAF shield RL and SAF shield Ru.

公开(公告)号：US09870791B1

公开(公告)日：2018-01-16

申请号：US15489180

申请日：2017-04-17

Applicant: Seagate Technology LLC

Inventor： Victor Sapozhnikov ,  Steven P. Bozeman ,  Mohammed Shariat Ullah Patwari ,  LiWen Tan ,  Jae Young Yi ,  Eric W. Singleton

IPC: G11B5/39 ,  G11B5/11 ,  G11B5/127

CPC classification number: G11B5/3958 ,  G11B5/112 ,  G11B5/1272 ,  G11B5/3912

Abstract: A multi-sensor reader that includes a first sensor that has a first sensor stack, which includes a sensing layer that has a magnetization that changes according to an external magnetic field. The first sensor also includes a first seed layer below the first sensor stack. The multi-sensor reader also includes a second sensor stacked over the first sensor. The second sensor includes a second sensor stack, which includes a sensing layer that has a magnetization that changes according to the external magnetic field. The second sensor also includes a second seed layer below the second sensor stack. A stabilization element is included to maintain a magnetization direction of the second seed layer and to stabilize the second seed layer.

公开(公告)号：US20170294199A1

公开(公告)日：2017-10-12

申请号：US15631372

申请日：2017-06-23

Applicant: Seagate Technology LLC

Inventor： Zhiguo Ge ,  Shaun E. McKinlay ,  Eric W. Singleton ,  LiWen Tan ,  Jae Young Yi

IPC: G11B5/39

CPC classification number: G11B5/3912 ,  G11B5/397 ,  G11B5/3974 ,  G11B5/398

Abstract: Implementations described and claimed herein include a reader structure, comprising a first reader, including a sensor stack and a top shield structure, the top shield structure comprises a synthetic antiferromagnetic shield (SAF) structure, including a reference layer including at least a layer of NiFe and an impurity additive, an RKKY coupling layer RKKY coupling layer (e.g., Ru layer), and a pinned layer. In another implementation, the RL of the SAF shield structure of a first reader includes at least a layer of amorphous magnetic material. Yet, in another implementation, the SAF shield structure includes an insertion layer of amorphous magnetic material under the SAF shield RL, within the SAF shield RL or between the SAF shield RL and SAF shield Ru.

公开(公告)号：US09685177B2

公开(公告)日：2017-06-20

申请号：US14793988

申请日：2015-07-08

Applicant: Seagate Technology LLC

Inventor： Zhiguo Ge ,  Shaun E. Mckinlay ,  Eric W. Singleton ,  LiWen Tan ,  Jae Young Yi

IPC: G11B5/39 ,  G11B5/127

CPC classification number: G11B5/3932 ,  G11B5/115 ,  G11B5/1272 ,  G11B5/3912 ,  G11B5/3954 ,  G11B5/3974

Abstract: A multi-sensor reader that includes a first sensor that has a sensing layer with a magnetization that changes according to an external magnetic field. The first sensor also includes first and second side biasing magnets having a magnetization substantially along a first direction. The first and second side biasing magnets align the magnetization of the sensing layer substantially along the first direction when the sensing layer is not substantially influenced by the external magnetic field. The multi-sensor reader further includes a second sensor that is stacked over the first sensor. The second sensor includes a reference layer that has a magnetization that is set substantially along a second direction. The first sensor further includes at least one sensor-stabilization feature that counteracts an influence of a magnetic field utilized to set the magnetization of the reference layer of the second sensor in the second direction on the magnetization of at least one of the first and second side biasing magnets in the first direction.