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1. 发明授权

US09786301B1 Apparatuses and methods for providing thin shields in a multiple sensor array 有权
公开(公告)号：US09786301B1
公开(公告)日：2017-10-10
申请号：US14557941
申请日：2014-12-02
申请人： Western Digital (Fremont), LLC
发明人： Shaoping Li , Gerardo A. Bertero , Steven C. Rudy , Shihai He , Ming Mao , Haiwen Xi , Srikanth Ganesan , Qunwen Leng , Ge Yi , Rongfu Xiao , Feng Liu , Lei Wang
IPC分类号： G11B5/39 , G11B5/11 , G11B5/60 , G11B5/115
CPC分类号： G11B5/115 , G11B5/112 , G11B5/3912 , G11B5/3951 , G11B5/3974 , G11B5/3977 , G11B5/4886
摘要： Apparatuses and methods for providing thin shields in a multiple sensor array are provided. One such apparatus is a magnetic read transducer including a first read sensor, a second read sensor, and a shield assembly positioned between the first read sensor and the second read sensor at an air bearing surface (ABS) of the magnetic read transducer, the shield assembly including a first shield layer assembly having a first footprint with a first area, and a second shield layer assembly having a second footprint with a second area, where the second area is greater than the first area.

2. 发明授权

US09704510B2 Data writer with graded side shields 有权
公开(公告)号：US09704510B2
公开(公告)日：2017-07-11
申请号：US14863673
申请日：2015-09-24
申请人： Seagate Technology LLC
发明人： Lei Lu , Kirill Rivkin , Xuelian Xu , Huaqing Yin
IPC分类号： G11B5/11 , G11B5/115 , G11B5/31 , G11B5/127
CPC分类号： G11B5/115 , G11B5/11 , G11B5/112 , G11B5/1278 , G11B5/315 , G11B5/3163
摘要： A data writer can have at least a write pole separated from first and second side shields by a continuous dielectric gap layer. Each side shield may have first and second shield sub-layers configured with different magnetic moments that increase relative to the sub-layer's distance from the write pole. The side shields may wrap around a leading tip of the write pole to form a box shield.

3. 发明申请

US20170076742A1 Perpendicular Magnetic Recording (PMR) Writer with Hybrid Shield Layers 审中-公开
标题翻译：具有混合屏蔽层的垂直磁记录（PMR）写入器
公开(公告)号：US20170076742A1
公开(公告)日：2017-03-16
申请号：US15361726
申请日：2016-11-28
申请人： Headway Technologies, Inc.
发明人： Yuhui Tang , Yaguang Wei , Jiun-Ting Lee
IPC分类号： G11B5/127 , G11B5/31 , G11B5/60
CPC分类号： G11B5/112 , G11B5/127 , G11B5/1278 , G11B5/187 , G11B5/235 , G11B5/3116 , G11B5/313 , G11B5/3143 , G11B5/3146 , G11B5/315 , G11B5/3163 , G11B5/3169
摘要： A perpendicular magnetic recording writer with an all wrap around (AWA) shield design wherein one or more of the leading shield, trailing shield, and side shields comprises a magnetic “hot seed” layer made of a >19 kG to 24 kG material that adjoins a gap layer, and a side of the hot seed layer opposite the gap layer adjoins a high damping magnetic layer made of a 10-16 kG material (or a 16-19 kG material in the trailing shield) having a Gilbert damping parameter α>0.04. In one embodiment, the high damping magnetic layer is FeNiRe with a Re content of 3 to 15 atomic %. The main pole leading and trailing sides may be tapered. Side shields may have a single taper or dual taper structure. Higher writer speed with greater areal density capability is achieved.
摘要翻译：具有全包裹（AWA）屏蔽设计的垂直磁记录写入器，其中一个或多个前屏蔽，后屏蔽和侧屏蔽包括由> 19kG至24kG材料制成的磁性“热种子”层，其邻接间隙层和与间隙层相对的热种子层的一侧与由10-16kG材料（或后盾的16-19kG材料）制成的高阻尼磁性层具有吉尔伯特阻尼参数α> 0.04。在一个实施例中，高阻尼磁性层是Re含量为3至15原子％的FeNiRe。主杆的前端和后端可以是锥形的。侧面屏蔽可以具有单个锥形或双锥形结构。实现了更高的写入速度，具有更大的面密度能力。

4. 发明授权

US09570100B1 Two-dimensional magnetic recording device with center shield stabilized by recessed AFM layer 有权
标题翻译：具有中心屏蔽的二维磁记录装置通过凹陷AFM层稳定
公开(公告)号：US09570100B1
公开(公告)日：2017-02-14
申请号：US14918829
申请日：2015-10-21
申请人： HGST Netherlands B.V.
发明人： James Freitag , Zheng Gao , Stefan Maat
IPC分类号： G11B5/39 , G11B5/11 , G11B5/33
CPC分类号： G11B5/3912 , G11B5/112 , G11B5/3948 , G11B5/397 , G11B5/398 , G11B5/4886
摘要： A two-dimensional magnetic recording (TDMR) read head with an antiferromagnetic (AFM) layer recessed behind a center shield. The TDMR read head comprises a first read sensor and a center shield over the first read sensor, wherein the center shield has a first thickness at an air-bearing surface (ABS) and a second thickness at a back surface, the first thickness being greater than the second thickness. A ferromagnetic layer is disposed over a portion of the center shield, wherein the ferromagnetic layer is recessed from the ABS. The TDMR read head also includes an antiferromagnetic layer over the ferromagnetic layer and a second read sensor over the antiferromagnetic layer. By recessing the AFM layer away from the ABS, the down-track spacing between read sensors is reduced, thereby improving TDMR read head performance.
摘要翻译：二维磁记录（TDMR）读头与反铁磁（AFM）层在中心屏蔽后面凹陷。 TDMR读取头包括在第一读取传感器上的第一读取传感器和中心屏蔽，其中中心屏蔽在空气轴承表面（ABS）处具有第一厚度，在后表面具有第二厚度，第一厚度更大比第二厚度。铁磁层设置在中心屏蔽的一部分上，其中铁磁层从ABS凹入。 TDMR读取头还包括在铁磁层上的反铁磁层和在反铁磁层上的第二读取传感器。通过使AFM层远离ABS，读取传感器之间的下行轨道间距减小，从而提高TDMR读取头的性能。

5. 发明授权

US09542961B2 Magnetoresistive sensor with stop-layers 有权
标题翻译：具有停止层的磁阻传感器
公开(公告)号：US09542961B2
公开(公告)日：2017-01-10
申请号：US14309012
申请日：2014-06-19
申请人： Seagate Technology LLC
发明人： Carolyn Pitcher Van Dorn , Thomas Roy Boonstra , Eric Walter Singleton , Shaun Eric McKinlay
IPC分类号： G11B5/39 , G11B5/31 , G11B5/11 , G11B5/40
CPC分类号： G11B5/39 , G11B5/11 , G11B5/112 , G11B5/3169 , G11B5/3912 , G11B5/40 , Y10T428/1121 , Y10T428/1164
摘要： Tolerances for manufacturing reader structures for transducer heads continue to grow smaller and storage density in corresponding storage media increases. Reader stop layers may be utilized during manufacturing of reader structures to protect various layers of the reader structure from recession and/or scratches while processing other non-protected layers of the reader structure. For example, the stop layer may have a very low polish rate during mechanical or chemical-mechanical polishing. Surrounding areas may be significantly polished while a structure protected by a stop layer with a very low polish rate is substantially unaffected. The stop layer may then be removed via etching, for example, after the mechanical or chemical-mechanical polishing is completed.
摘要翻译：用于传感器头的制造读取器结构的公差继续增长，并且相应的存储介质中的存储密度增加。在读取器结构的制造期间可以利用读取器停止层来保护读取器结构的各个层免于衰退和/或划伤，同时处理读取器结构的其它未受保护的层。例如，在机械或化学机械抛光期间，停止层可能具有非常低的抛光速率。可以显着地抛光周围区域，而由具有非常低的抛光速率的停止层保护的结构基本上不受影响。然后可以例如在机械或化学机械抛光完成之后通过蚀刻去除停止层。

6. 发明授权

US09472214B1 Reader side shield 有权
标题翻译：读卡器侧屏蔽
公开(公告)号：US09472214B1
公开(公告)日：2016-10-18
申请号：US14514050
申请日：2014-10-14
申请人： Seagate Technology LLC
发明人： Xin Cao , Frances Paula McElhinney , Jiansheng Xu , Marcus Winston Ormston
IPC分类号： G11B5/31 , G11B5/11 , G11B5/39
CPC分类号： G11B5/3912 , G11B5/112 , G11B5/3163 , G11B5/39 , G11B5/3903 , G11B5/3906 , G11B5/3929 , G11B5/3932 , G11B5/6082 , Y10T29/49032 , Y10T29/49041 , Y10T29/49043 , Y10T29/49046 , Y10T29/49048
摘要： A magnetoresistive (MR) sensor shield shields against both down track and cross-track interference. The shield can be formed in a single deposition step. In one implementation of the disclosed technology, a “tail” portion of the shield is eliminated by including a non-magnetic material adjacent to opposite sides of a middle portion of the sensor stack.
摘要翻译：磁阻（MR）传感器屏蔽屏蔽屏蔽防止下行轨道和交叉轨道干扰。屏蔽可以在单个沉积步骤中形成。在所公开的技术的一个实现中，通过在传感器堆叠的中间部分的相对侧附近包括非磁性材料来消除屏蔽的“尾”部分。

7. 发明授权

US09196268B2 Magnetic head manufacturing method forming sensor side wall film by over-etching magnetic shield 有权
标题翻译：磁头制造方法通过过蚀刻磁屏蔽形成传感器侧壁膜
公开(公告)号：US09196268B2
公开(公告)日：2015-11-24
申请号：US14549428
申请日：2014-11-20
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Hitoshi Iwasaki , Masayuki Takagishi
IPC分类号： G11B5/39 , G11B5/11 , G01R33/09
CPC分类号： G11B5/112 , G01R33/093 , G11B5/11 , G11B5/3912 , G11B5/3932 , G11B2005/3996 , Y10T29/49052
摘要： According to one embodiment, a magnetic head includes a reproducing unit to detect a medium magnetic field recorded in a magnetic recording medium. The reproducing unit includes first and second magnetic shields, a stacked body, and a side wall film. The stacked body is provided between the first and second magnetic shields and includes first and second magnetic layer and an intermediate layer provided between them. The stacked body has a side wall. The side wall intersects a plane perpendicular to a stacking direction from the first magnetic shield toward the second magnetic shield. The side wall film covers at least a part of the side wall of the stacked body. The side wall film includes at least one of Fe and Co, and has a composition different from a composition of the first magnetic layer and different from a composition of the second magnetic layer.
摘要翻译：根据一个实施例，磁头包括用于检测记录在磁记录介质中的介质磁场的再现单元。再现单元包括第一和第二磁屏蔽，堆叠体和侧壁膜。层叠体设置在第一和第二磁屏蔽之间，并且包括第一和第二磁性层以及设置在它们之间的中间层。堆叠体具有侧壁。侧壁与从第一磁屏蔽朝向第二磁屏蔽的垂直于堆叠方向的平面相交。侧壁膜覆盖层叠体的侧壁的至少一部分。侧壁膜包括Fe和Co中的至少一种，并且具有不同于第一磁性层的组成并且不同于第二磁性层的组成的组成。

8. 发明授权

US09196267B2 Data writer with flux density insert 有权
标题翻译：具有磁通密度插入的数据写入器
公开(公告)号：US09196267B2
公开(公告)日：2015-11-24
申请号：US13931340
申请日：2013-06-28
申请人： Seagate Technology LLC
发明人： Swaraj Basu , Mark Gubbins , Muhammad Asif Bashir , Prim Gangmei
IPC分类号： G11B5/11 , G11B5/127 , G11B5/235 , G11B5/31
CPC分类号： G11B5/11 , G11B5/112 , G11B5/1278 , G11B5/235 , G11B5/3116 , G11B5/3143 , G11B5/315
摘要： A data writer may be generally configured at least with a write pole adjacent to and separated from a side shield and a trailing shield. The side shield may be formed of a first material and configured with a trailing box region that is at least partially filled with a flux density insert formed of a second material that is different than the first material.
摘要翻译：数据写入器可以通常配置成至少具有与侧屏蔽件和后屏蔽件相邻并与其分离的写入极。侧护罩可以由第一材料形成并且构造成具有至少部分地填充有由与第一材料不同的第二材料形成的通量密度插入件的后箱区域。

9. 发明授权

US09082425B2 Magnetic shield with flux concentration feature 有权
标题翻译：具有磁通密度特性的磁屏蔽
公开(公告)号：US09082425B2
公开(公告)日：2015-07-14
申请号：US13100984
申请日：2011-05-04
申请人： Radek Lopusnik , Kirill Aleksandrovich Rivkin , Mourad Benakli , James Gary Wessel , Scott Michael Franzen
发明人： Radek Lopusnik , Kirill Aleksandrovich Rivkin , Mourad Benakli , James Gary Wessel , Scott Michael Franzen
IPC分类号： G11B5/127 , G11B5/11 , G11B5/31
CPC分类号： G11B5/112 , G11B5/1278 , G11B5/3116 , G11B5/315
摘要： A magnetic shield may be capable of enhancing magnetic writing, particularly in transducing elements accessing data bits from data tracks. At least one magnetic shield is adjacent a write pole. The shield has a flux concentration feature on an air bearing surface (ABS) capable of enhancing magnetic undershoot between the shield and the write pole.
摘要翻译：磁屏蔽可能能够增强磁性写入，特别是在从数据轨道访问数据位的转换元件中。至少一个磁屏蔽与写入极相邻。屏蔽件在能够增强屏蔽和写入极之间的磁下冲的空气轴承表面（ABS）上具有通量集中特征。

10. 发明授权

US09030782B2 Data reader side shields with polish stop 有权
标题翻译：数据读取器侧屏蔽与抛光停止
公开(公告)号：US09030782B2
公开(公告)日：2015-05-12
申请号：US13800222
申请日：2013-03-13
申请人： Seagate Technology LLC
发明人： Shaun Eric McKinlay , Eric W. Singleton , Carolyn Pitcher Van Dorn , Levent Colak , Thu-Van Thi Nguyen
IPC分类号： G11B5/39 , G11B5/11 , G11B5/31
CPC分类号： G11B5/112 , G11B5/3163 , G11B5/3912
摘要： A data reader and associated method of making are generally provided. A data reader capable of sensing adjacent data bits may be configured at least with a magnetic stack disposed between first and second side shields. Each side shield may have a polish stop layer that is tuned to provide a first predetermined polish rate.
摘要翻译：通常提供数据读取器和相关的制造方法。可以至少利用设置在第一和第二侧面屏蔽之间的磁性堆叠来配置能够感测相邻数据位的数据读取器。每个侧护罩可以具有调光以提供第一预定抛光速率的抛光停止层。

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