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公开(公告)号：US10054649B2
公开(公告)日：2018-08-21
申请号：US15238354
申请日：2016-08-16
Applicant: Seagate Technology, LLC
Inventor： Eric W. Singleton , Qing He , Jae-Young Yi , Matt Johnson , Zheng Gao , Dimitar V. Dimitrov , Song S. Xue
CPC classification number: G01R33/0052 , B82Y25/00 , G01R33/0076 , G01R33/093 , G01R33/098 , G11B5/3912 , G11B5/398
Abstract: A magnetic sensor assembly includes first and second shields each comprised of a magnetic material. The first and second shields define a physical shield-to-shield spacing. A sensor stack is disposed between the first and second shields and includes a seed layer adjacent the first shield, a cap layer adjacent the second shield, and a magnetic sensor between the seed layer and the cap layer. At least a portion of the seed layer and/or the cap layer comprises a magnetic material to provide an effective shield-to-shield spacing of the magnetic sensor assembly that is less than the physical shield-to-shield spacing.
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公开(公告)号：US09646635B2
公开(公告)日：2017-05-09
申请号：US14808430
申请日：2015-07-24
Applicant: Seagate Technology LLC
Inventor： Eric W. Singleton , Liwen Tan , Jae-Young Yi , Konstantin Nikolaev
CPC classification number: G11B5/3912 , G01R33/0017 , G01R33/09 , G01R33/098
Abstract: Implementations disclosed herein allow a signal detected by a magnetoresistive (MR) sensor to be improved by providing for one or more alloyed layers that each includes a ferromagnetic material and a refractory material. The alloyed layers are provided adjacent to a shield element or between soft magnetic layers of the sensor stack.
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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
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。
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公开(公告)号：US09251815B2
公开(公告)日：2016-02-02
申请号：US13930150
申请日：2013-06-28
Applicant: Seagate Technology LLC
Inventor： Eric W. Singleton , Konstantin Nikolaev , Liwen Tan , Jae-Young Yi , Victor Boris Sapozhnikov , Mohammed Sharia Ullah Patwari
IPC: G11B5/39
CPC classification number: G11B5/3912 , G11B5/3909 , G11B5/3929 , G11B2005/3996
Abstract: An apparatus disclosed herein includes a sensor stack including a first layer and an AFM stabilized bottom shield in proximity to the first layer, wherein the AFM stabilized bottom shield is magnetically coupled to the first layer. The apparatus reduces shield-to-shield spacing. The pinned layer of the bottom shield and a pinned layer of the sensor stack are stabilized using the AFM layer in the bottom shield. In one implementation, the bottom shield is made of the SAF structure, with the top layer of the structure adjacent to a pinned layer in the sensor stack.
Abstract translation: 本文公开的装置包括传感器堆叠，其包括靠近第一层的第一层和AFM稳定的底部屏蔽，其中AFM稳定的底部屏蔽物磁耦合到第一层。 该设备减少屏蔽间隔。 使用底部屏蔽中的AFM层来稳定底部屏蔽的固定层和传感器堆叠的固定层。 在一个实施方案中，底部屏蔽由SAF结构制成，结构的顶层与传感器堆叠中的固定层相邻。
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公开(公告)号：US20150325260A1
公开(公告)日：2015-11-12
申请号：US14270593
申请日：2014-05-06
Applicant: Seagate Technology LLC
Inventor： Eric W. Singleton , Liwen Tan , Jae-Young Yi , Konstantin Nikolaev , Zhiguo Ge
CPC classification number: G11B5/3912 , G11B5/3153 , G11B5/3909 , G11B5/3932 , G11B5/3958 , G11B2005/3996
Abstract: A reader stack, such as for a magnetic storage device, the stack having a top synthetic antiferromagnetic (SAF) layer, a magnetic capping layer adjacent to the top SAF layer, an RKKY coupling layer adjacent to the magnetic capping layer opposite the top SAF layer, and a free layer adjacent to the RKKY coupling layer opposite the magnetic capping layer. Also included is a method for biasing a free layer in a reader stack by providing an exchange coupling between the free layer and a top synthetic antiferromagnetic (SAF) layer using a layer having RKKY coupling property positioned between the free layer and the top SAF layer and a magnetic capping layer between the SAF layer and the layer having RKKY coupling property.
Abstract translation: 诸如用于磁存储装置的读取器堆叠，堆叠具有顶部合成反铁磁（SAF）层，与顶部SAF层相邻的磁性覆盖层，与顶部SAF层相对的磁性覆盖层相邻的RKKY耦合层 以及与RKKY耦合层相邻的与磁性覆盖层相对的自由层。 还包括一种通过使用具有位于自由层和顶部SAF层之间的具有RKKY耦合性质的层的自由层和顶层合成反铁磁性（SAF）层之间的交换耦合来偏置读取器堆叠中的自由层的方法，以及 SAF层和具有RKKY耦合性质的层之间的磁性覆盖层。
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Patent Agency Ranking
公开(公告)号：US20180094347A1
公开(公告)日：2018-04-05
申请号：US15819146
申请日：2017-11-21
Applicant: Seagate Technology LLC
Inventor： Jae-Young Yi , Eric W. Singleton
CPC classification number: H01J37/3429 , C23C14/185 , C23C14/541
Abstract: A fabrication method that includes cryogenically cooling a multi-layered structure, which includes a barrier layer, in a multi-purpose chamber having a single enclosure around at least one sputtering target and a substrate support. The method also includes depositing a ferromagnetic layer over the barrier layer of the cryogenically cooled multi-layered structure in the single enclosure when the multi-layered structure is supported on the substrate support.
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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.
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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
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.
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公开(公告)号：US20160319419A1
公开(公告)日：2016-11-03
申请号：US14699190
申请日：2015-04-29
Applicant: Seagate Technology LLC
Inventor： Qing He , Jae Young Yi , Eric W. Singleton
CPC classification number: C23C14/081 , B82Y25/00 , C23C14/568 , C23C14/5806 , C23C28/32 , C23C28/322 , C23C28/345 , G11B5/3163 , G11B5/3909
Abstract: A method of making an MgO barrier layer for a TMR sensor, the method including depositing a first Mg layer in a first chamber, depositing a second Mg layer on the first Mg layer using a reactive oxide deposition process in the presence of oxygen in the first chamber or in a second chamber different than the first chamber, depositing a third Mg layer on the second MgO layer in either the first chamber, the second chamber, or a third chamber, and annealing the first layer, the second layer, and the third layer to form an MgO barrier layer.
Abstract translation: 一种制造用于TMR传感器的MgO阻挡层的方法，所述方法包括在第一室中沉积第一Mg层，在第一Mg层中在氧的存在下使用反应性氧化物沉积工艺在第一Mg层上沉积第二Mg层 或者在与第一室不同的第二室中，在第一室，第二室或第三室中的第二MgO层上沉积第三Mg层，并且退火第一层，第二层和第三层 层以形成MgO阻挡层。
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公开(公告)号：US09396745B2
公开(公告)日：2016-07-19
申请号：US14201358
申请日：2014-03-07
Applicant: Seagate Technology LLC
Inventor： Declan Macken , Jason Gadbois , Eric W. Singleton , John M. Wolf
IPC: G11B5/39
CPC classification number: G11B5/3951 , G11B5/3909 , G11B5/3912 , G11B5/3932 , G11B5/3948 , G11B5/3958 , G11B2005/3996
Abstract: Apparatus for sensing data from a magnetic recording medium using a multi-sensor reader with different readback sensitivities. In accordance with some embodiments, a data transducing head has first and second read sensors. The first read sensor is optimized for reading data and the second read sensor is optimized to detect thermal asperity (TA) events.
Abstract translation: 用于使用具有不同回读敏感度的多传感器读取器来感测来自磁记录介质的数据的装置。 根据一些实施例，数据传感头具有第一和第二读取传感器。 第一个读取传感器被优化用于读取数据，第二个读取传感器被优化以检测热不均匀性（TA）事件。
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