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公开(公告)号：US08749926B1
公开(公告)日：2014-06-10
申请号：US13691525
申请日：2012-11-30
Applicant: HGST Netherlands B.V.
Inventor： Quang Le , Simon H. Liao , Guangli Liu , Stefan Maat , Xiaozhong Dang , David J. Seagle , Petrus A. Van Der Heijden
IPC: G11B5/39
CPC classification number: G11B5/11 , B82Y10/00 , G11B5/3909 , G11B21/18 , G11B2005/3996
Abstract: A magnetic scissor type magnetic read head having magnetic side shielding for reduced effective track width and having side biasing for improved stability. The read head includes first and magnetic side shields that each include first and second magnetic layers and an anti-parallel exchange coupling layer sandwiched there-between. The magnetic layers of the side shields are anti-parallel coupled with one another such that one of the magnetic layers has its magnetization oriented in a first direction parallel with the air bearing surface and the second magnetic layer has its magnetization oriented in a second direction that is opposite to the first direction and also parallel with the air bearing surface. These magnetizations of the first and second magnetic layers provide a bias field that stabilizes the magnetization of the free magnetic layers of the sensor stack to prevent flipping of the magnetizations of these layers.
Abstract translation: 一种磁剪刀式磁读头，具有磁性侧屏蔽，减少了有效的磁道宽度，并具有侧偏压以提高稳定性。 读头包括第一和第二磁屏蔽，每个磁屏蔽包括第一和第二磁性层以及夹在其间的反平行交换耦合层。 侧屏蔽的磁层彼此反平行耦合，使得磁层中的一个磁化层在与空气轴承表面平行的第一方向上定向，并且第二磁性层的磁化方向在第二方向上定向， 与第一方向相反并且还与空气轴承表面平行。 第一和第二磁性层的这些磁化提供了一个偏置磁场，其稳定传感器堆叠的自由磁层的磁化，以防止这些层的磁化的翻转。
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2.发明申请公开(公告)号：US20150118520A1
公开(公告)日：2015-04-30
申请号：US14062789
申请日：2013-10-24
Applicant: HGST Netherlands B.V.
Inventor： Yongchul Ahn , Xiaozhong Dang , Cherngye Hwang , Quang Le , Simon H. Liao , Guangli Liu , Stefan Maat
CPC classification number: G11B5/332 , G11B5/3163 , G11B5/3929 , G11B5/398 , Y10T428/1171
Abstract: A magnetic read sensor having improved pinning and reduced area resistance. The sensor has pinned magnetic layer that extends beyond the functional stripe of the sensor to improve magnetic pinning. The free layer has a magnetic portion that extends to the functional stripe height and a non-magnetic portion that extends beyond the functional stripe height. The sensor may have an end point detection layer located between the magnetic pinned layer and the magnetic free layer.
Abstract translation: 磁读取传感器具有改进的钉扎和减小的面积电阻。 传感器已经固定磁性层，超出传感器的功能条，以改善磁性固定。 自由层具有延伸到功能条纹高度的磁性部分和延伸超出功能条纹高度的非磁性部分。 传感器可以具有位于磁性固定层和无磁性层之间的端点检测层。
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3.发明授权Shape enhanced pin read head magnetic transducer with stripe height defined first and method of making same 有权形状增强针头读头磁换能器，先定义条纹高度，制作方法公开(公告)号：US08836059B2
公开(公告)日：2014-09-16
申请号：US13724662
申请日：2012-12-21
Applicant: HGST Netherlands B.V.
Inventor： Yongchul Ahn , Xiaozhong Dang , Yimin Hsu , Quang Le , Thomas Leong , Simon Liao , Guangli Liu , Aron Pentek
CPC classification number: H01L21/02104 , B82Y10/00 , G11B5/3909 , G11B5/3932 , G11B2005/3996 , H01L29/82
Abstract: The present invention generally relates to a magnetic sensor in a read head having a hard or soft bias layer that is uniform in thickness within the sensor stack. The method of making such sensor is also disclosed. The free layer stripe height is first defined, followed by defining the track width, and lastly the pinned layer stripe height is defined. The pinned layer and the hard or soft bias layer are defined in the same process step. This approach eliminates a partial hard or soft bias layer and reduces potential instability issues.
Abstract translation: 本发明一般涉及读头中的磁传感器，其具有在传感器叠层内厚度均匀的硬或柔性偏压层。 还公开了制造这种传感器的方法。 首先定义自由层条纹高度，然后定义轨道宽度，最后定义固定层条纹高度。 钉扎层和硬或软偏置层在相同的工艺步骤中定义。 该方法消除了部分硬或软偏置层，并减少了潜在的不稳定性问题。
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公开(公告)号：US20140153138A1
公开(公告)日：2014-06-05
申请号：US13691525
申请日：2012-11-30
Applicant: HGST NETHERLANDS B.V.
Inventor： Quang Le , Simon H. Liao , Guangli Liu , Stefan Maat , Xiaozhong Dang , David J. Seagle , Petrus A. Van Der Heijden
CPC classification number: G11B5/11 , B82Y10/00 , G11B5/3909 , G11B21/18 , G11B2005/3996
Abstract: A magnetic scissor type magnetic read head having magnetic side shielding for reduced effective track width and having side biasing for improved stability. The read head includes first and magnetic side shields that each include first and second magnetic layers and an anti-parallel exchange coupling layer sandwiched there-between. The magnetic layers of the side shields are anti-parallel coupled with one another such that one of the magnetic layers has its magnetization oriented in a first direction parallel with the air bearing surface and the second magnetic layer has its magnetization oriented in a second direction that is opposite to the first direction and also parallel with the air bearing surface. These magnetizations of the first and second magnetic layers provide a bias field that stabilizes the magnetization of the free magnetic layers of the sensor stack to prevent flipping of the magnetizations of these layers.
Abstract translation: 一种磁剪刀式磁读头，具有磁性侧屏蔽，减少了有效的磁道宽度，并具有侧偏压以提高稳定性。 读头包括第一和第二磁屏蔽，每个磁屏蔽包括第一和第二磁性层以及夹在其间的反平行交换耦合层。 侧屏蔽的磁层彼此反平行耦合，使得磁层中的一个磁化层在与空气轴承表面平行的第一方向上定向，并且第二磁性层的磁化方向在第二方向上定向， 与第一方向相反并且还与空气轴承表面平行。 第一和第二磁性层的这些磁化提供了一个偏置磁场，其稳定传感器堆叠的自由磁层的磁化，以防止这些层的磁化的翻转。
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