专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09065043B1 Tunnel magnetoresistance read head with narrow shield-to-shield spacing 有权
标题翻译：隧道磁阻读头，屏蔽间隔窄
公开(公告)号：US09065043B1
公开(公告)日：2015-06-23
申请号：US14242717
申请日：2014-04-01
申请人： Western Digital (Fremont), LLC
发明人： Rongfu Xiao , Guanxiong Li , Zhihong Zhang , Ming Mao , Chen-Jung Chien
IPC分类号： G11B5/39 , H01L43/12 , G11B5/31 , G11B5/33
CPC分类号： G11B5/3909 , G01R33/098 , G11B5/3163 , G11B5/3912 , G11B5/398 , H01L43/12 , Y10T29/49052
摘要： A tunnel magnetoresistance (TMR) read sensor having a tabbed AFM layer and an extended pinned layer and methods for making the same are provided. The TMR read sensor has an AFM layer recessed from the air bearing surface, providing a reduced shield-to-shield distance.
摘要翻译：提供具有带标签的AFM层和扩展的钉扎层的隧道磁阻（TMR）读取传感器及其制造方法。 TMR读取传感器具有从空气轴承表面凹入的AFM层，从而减少屏蔽与屏蔽距离。

2. 发明授权

US08883017B1 Method and system for providing a read transducer having seamless interfaces 有权
标题翻译：用于提供具有无缝界面的读取传感器的方法和系统
公开(公告)号：US08883017B1
公开(公告)日：2014-11-11
申请号：US13797221
申请日：2013-03-12
申请人： Western Digital (Fremont), LLC
发明人： Zhihong Zhang , Guanxiong Li , Ming Mao
IPC分类号： B44C1/22 , G11B5/39 , H01L43/12 , G11B5/31 , G11B5/127
CPC分类号： G11B5/127 , G11B5/313 , G11B5/314 , G11B5/3163 , G11B5/3903 , G11B5/3906 , G11B5/3912 , G11B5/3932 , H01L43/12
摘要： A method and system provide a substantially seamless interface in a magnetic transducer. The magnetic recording transducer includes a first layer and a second layer on the first layer. The second layer is different from the first layer. The first layer consists of at least one material. The method includes removing at least the second layer using a first removal process. A residue of the second layer and a first portion of the first layer remain after the first removal process. A first sacrificial layer consists of the at least one material on the first portion of the first layer. At least the first sacrificial layer is removed using a second removal process. A second portion of the first layer remains after completion of the second removal process. An additional structure is provided. The seamless interface is between the second portion of the first layer and the additional structure.
摘要翻译：方法和系统在磁换能器中提供基本上无缝的界面。磁记录换能器包括在第一层上的第一层和第二层。第二层与第一层不同。第一层由至少一种材料组成。该方法包括使用第一移除过程去除至少第二层。在第一次去除处理之后残留第二层和第一层的第一部分。第一牺牲层由第一层的第一部分上的至少一种材料构成。使用第二去除工艺至少除去第一牺牲层。在第二去除过程完成之后，第一层的第二部分保留。提供了另外的结构。无缝界面在第一层的第二部分和附加结构之间。

3. 发明授权

US10074387B1 Method and system for providing a read transducer having symmetric antiferromagnetically coupled shields 有权
公开(公告)号：US10074387B1
公开(公告)日：2018-09-11
申请号：US14578450
申请日：2014-12-21
申请人： Western Digital (Fremont), LLC
发明人： Rongfu Xiao , Miaoyin Wang , Zhihong Zhang , Guanghong Luo , Ming Mao
IPC分类号： G11B5/39
CPC分类号： G11B5/3912 , G11B5/3909 , G11B2005/3996
摘要： A method provides a magnetic transducer including a first antiferromagnetically coupled (AFC) shield, a second AFC shield and a read sensor between the first and second AFC shields. The first AFC shield includes first and second ferromagnetic layers and a first nonmagnetic spacer layer between the first and second ferromagnetic layers. The first and second ferromagnetic layers have first and second saturation magnetizations and first and second thicknesses, respectively. The second ferromagnetic layer is between the read sensor and the first ferromagnetic layer. The second AFC shield includes third and fourth ferromagnetic layers and a second nonmagnetic spacer layer between the third and fourth ferromagnetic layers. The third ferromagnetic layer is between the read sensor and the fourth ferromagnetic layer. The third and fourth ferromagnetic layers have third and saturation magnetizations and third and fourth thicknesses, respectively. The second AFC shield is a mirror image of the first AFC shield.

4. 发明授权

US10068601B1 Free layer only magnetic reader that may have a reduced shield-to-shield spacing and a multilayer side bias 有权
公开(公告)号：US10068601B1
公开(公告)日：2018-09-04
申请号：US15232669
申请日：2016-08-09
申请人： Western Digital (Fremont), LLC
发明人： Shaoping Li , Shihai He , Gerardo A. Bertero , Ming Mao , Yuankai Zheng , Anup Ghosh Roy , Chen-Jung Chien , Zhihong Zhang
IPC分类号： G11B5/39 , G11B5/60
摘要： A magnetic read apparatus includes a media-facing surface (MFS), a sensor, a shield structure, a side bias structure, and a shield reference bias structure. The sensor includes a free layer and a nonmagnetic layer. The shield structure includes a shield pinning structure and a shield reference structure between the shield pinning structure and the nonmagnetic layer. The nonmagnetic layer is between the free layer and a shield reference structure. The shield pinning structure includes a pinned moment oriented in a first direction. The shield reference structure includes a reference structure moment weakly coupled with the pinned moment. The side bias structure is adjacent to a side of the free layer and biases the free layer in a first direction parallel to the MFS. The shield reference bias structure is adjacent to the shield reference structure and biases the shield reference structure in a direction opposite to the first direction.

5. 发明授权

US09830936B2 Magnetic read head with antiferromagentic layer 有权
公开(公告)号：US09830936B2
公开(公告)日：2017-11-28
申请号：US14943211
申请日：2015-11-17
申请人： Western Digital (Fremont), LLC
发明人： Shaoping Li , Yuankai Zheng , Gerardo A. Bertero , Qunwen Leng , Michael L. Mallary , Rongfu Xiao , Ming Mao , Zhihong Zhang , Anup G. Roy , Chen Jung Chien , Zhitao Diao , Ling Wang
IPC分类号： G11B5/39 , G11B5/31
CPC分类号： G11B5/3909 , G11B5/3163 , G11B5/3912 , G11B5/398 , Y10T428/1114
摘要： A tunnel magnetoresistance (TMR) read sensor having a tabbed AFM layer and an extended pinned layer and methods for making the same are provided. The TMR read sensor has an AFM layer recessed from the air bearing surface, providing a reduced shield-to-shield distance.

6. 发明授权

US09412400B2 Tunnel magnetoresistance read head with narrow shield-to-shield spacing 有权
公开(公告)号：US09412400B2
公开(公告)日：2016-08-09
申请号：US14740027
申请日：2015-06-15
申请人： Western Digital (Fremont), LLC
发明人： Rongfu Xiao , Guanxiong Li , Zhihong Zhang , Ming Mao , Chen-Jung Chien
IPC分类号： G11B5/39 , G01R33/09 , G11B5/31 , H01L43/12
CPC分类号： G11B5/3909 , G01R33/098 , G11B5/3163 , G11B5/3912 , G11B5/398 , H01L43/12 , Y10T29/49052
摘要： A tunnel magnetoresistance (TMR) read sensor having a tabbed AFM layer and an extended pinned layer and methods for making the same are provided. The TMR read sensor has an AFM layer recessed from the air bearing surface, providing a reduced shield-to-shield distance.

7. 发明授权

US09406331B1 Method for making ultra-narrow read sensor and read transducer device resulting therefrom 有权
标题翻译：制造超窄读取传感器和读取传感器装置的方法
公开(公告)号：US09406331B1
公开(公告)日：2016-08-02
申请号：US13929633
申请日：2013-06-27
申请人： Western Digital (Fremont), LLC
发明人： Miao Wang , Wei Gao , Xiaoyu Yang , Anup G. Roy , Wei Zhang , Wencheng Su , Zhihong Zhang , James Yuan , Guanxiong Li , Ming Mao , Hai Sun , Lingyun Miao
IPC分类号： B44C1/22 , G11B5/84 , G11B5/127
CPC分类号： G11B5/313 , G11B5/3163 , G11B5/3166 , G11B5/3169 , G11B5/855
摘要： Disclosed are methods for making ultra-narrow track width (TW) read sensors, and read transducers incorporating such sensors. The methods utilize side-wall line patterning techniques to prepare ultra-narrow mill masks that can be used to prepare the ultra-narrow read sensors.
摘要翻译：公开了用于制造超窄轨道宽度（TW）读取传感器的方法和包含这种传感器的读取传感器的方法。该方法利用侧壁线图案化技术来制备可用于制备超窄读取传感器的超窄磨机掩模。

8. 发明授权

US09715889B1 Read sensor having an insulating layer capable of use in two-dimensional magnetic recording 有权
公开(公告)号：US09715889B1
公开(公告)日：2017-07-25
申请号：US15240311
申请日：2016-08-18
申请人： Western Digital (Fremont), LLC
发明人： Shaoping Li , Gerardo A. Bertero , Ming Mao , Shihai He , Steven C. Rudy , Haiwen Xi , Zhipeng Li , Haifeng Wang , Jianxin Fang , Zhihong Zhang , Yingbo Zhang , Qunwen Leng , Christopher L. Beaudry , Ruisheng Liu
IPC分类号： G11B5/39 , G01R33/09 , G01R33/00
CPC分类号： G11B5/39 , G01R33/0052 , G01R33/098 , G11B5/3909 , G11B5/3912 , G11B5/3932 , G11B5/3977
摘要： A magnetic read apparatus has a media-facing surface (MFS) and includes a read sensor, a magnetic bias structure and an insulating layer. The read sensor has a side, a front occupying part of the MFS and a back. The read sensor includes a free layer, a pinned layer and a barrier layer between the free and pinned layers. The barrier layer has a barrier layer coefficient of thermal expansion. The magnetic bias structure is adjacent to the side of the free layer. The insulating layer includes first and second portions. The first portion of the insulating layer is between the read sensor side and the magnetic bias structure. The second portion of the insulating layer adjoins the read sensor back. The insulating layer has an insulating layer coefficient of thermal expansion that is at least ⅓ of and not more than 5/3 of the barrier layer coefficient of thermal expansion.

9. 发明授权

US09214172B2 Method of manufacturing a magnetic read head 有权
标题翻译：磁读头的制造方法
公开(公告)号：US09214172B2
公开(公告)日：2015-12-15
申请号：US14230962
申请日：2014-03-31
申请人： Western Digital (Fremont), LLC
发明人： Shaoping Li , Yuankai Zheng , Gerardo A. Bertero , Qunwen Leng , Michael L. Mallary , Rongfu Xiao , Ming Mao , Zhihong Zhang , Anup G. Roy , Chen Jung Chien , Zhitao Diao , Ling Wang
IPC分类号： G11B5/127 , H04R31/00 , G11B5/39 , G11B5/31
CPC分类号： G11B5/3909 , G11B5/3163 , G11B5/3912 , G11B5/398 , Y10T428/1114
摘要： A tunnel magnetoresistance (TMR) read sensor having a tabbed AFM layer and an extended pinned layer and methods for making the same are provided. The TMR read sensor has an AFM layer recessed from the air bearing surface, providing a reduced shield-to-shield distance.
摘要翻译：提供具有带标签的AFM层和扩展的钉扎层的隧道磁阻（TMR）读取传感器及其制造方法。 TMR读取传感器具有从空气轴承表面凹入的AFM层，从而减少屏蔽与屏蔽距离。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式