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1. 发明授权

US06809899B1 Magnetic heads for perpendicular recording with trapezoidal pole tips 有权
标题翻译：用于垂直记录的梯形磁极头
公开(公告)号：US06809899B1
公开(公告)日：2004-10-26
申请号：US10751215
申请日：2003-12-31
申请人： Yingjian Chen , Yugang Wang , Francis Liu , Xizeng Shi , Kyusik Sin , Hugh Craig Hiner
发明人： Yingjian Chen , Yugang Wang , Francis Liu , Xizeng Shi , Kyusik Sin , Hugh Craig Hiner
IPC分类号： G11B5147
CPC分类号： G11B5/1278 , Y10S977/934
摘要： Electromagnetic transducers are disclosed having write poles with a leading edge that is smaller than a trailing edge, which can reduce erroneous writing for perpendicular recording systems. The write poles may have a trapezoidal shape when viewed from a direction of an associated medium. The write poles may be incorporated in heads or sliders that also contain read elements such as magnetoresistive sensors, and may be employed with information storage systems such as disk drives.
摘要翻译：公开了具有写入极的电磁换能器，其前缘小于后缘，这可以减少用于垂直记录系统的错误写入。当从相关联的介质的方向观察时，写入极可以具有梯形形状。写入极可以并入还包含诸如磁阻传感器的读取元件的磁头或滑块中，并且可以用于诸如磁盘驱动器的信息存储系统。

2. 发明授权

US06721138B1 Inductive transducer with stitched pole tip and pedestal defining zero throat height 有权
标题翻译：具有缝合极尖和底座的感应传感器，定义零喉部高度
公开(公告)号：US06721138B1
公开(公告)日：2004-04-13
申请号：US09999694
申请日：2001-10-24
申请人： Yingjian Chen , Xizeng Shi , Hugh Craig Hiner , Zi-Wen Dong , Francis Liu , Matthew R. Gibbons , Joyce Anne Thompson , William D. Jensen , Chester Xiaowen Chien , Yugang Wang
发明人： Yingjian Chen , Xizeng Shi , Hugh Craig Hiner , Zi-Wen Dong , Francis Liu , Matthew R. Gibbons , Joyce Anne Thompson , William D. Jensen , Chester Xiaowen Chien , Yugang Wang
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3116 , G11B5/313 , G11B5/3146 , G11B5/3153 , G11B5/3163 , G11B5/3909 , G11B5/3967 , G11B2005/3996
摘要： An inductive transducer having first and second magnetic pedestals disposed between first and second magnetic pole layers and adjacent to a media-facing surface, the pedestals separated by a submicron, nonmagnetic gap. The first pedestal extends less than the second pedestal from the media-facing surface, defining a short throat height. The second pedestal extends further to provide sufficient area for stitching to the second pole layer. The stitching and the thickness provided by the pedestals allow plural coil layers to be disposed between the pole layers, and the second pedestal, as well as other features, can be defined by high-resolution photolithography. The two coil layers have lower resistance, lower inductance and allow the pole layers to be shorter, improving performance. All or part of either or both of the pedestals may be formed of high magnetic saturation material, further enhancing performance.
摘要翻译：一种感应换能器，其具有设置在第一和第二磁极层之间并且邻近介质面向表面的第一和第二磁性基座，所述基座由亚微米非磁性间隙分开。第一基座从面向介质的表面延伸小于第二基座，限定短的喉部高度。第二基座进一步延伸以提供足够的面积用于缝合到第二极层。由基座提供的缝合和厚度允许在极层之间设置多个线圈层，并且第二基座以及其它特征可以通过高分辨率光刻来定义。两个线圈层具有较低的电阻，较低的电感，并允许极层更短，从而提高性能。基座中的一个或两个的全部或一部分可以由高磁饱和材料形成，进一步提高性能。

3. 发明授权

US06785955B1 Method for providing pedestal-defined zero throat writer 失效
标题翻译：提供基座定义零喉作家的方法
公开(公告)号：US06785955B1
公开(公告)日：2004-09-07
申请号：US09769060
申请日：2001-01-23
申请人： Yingjian Chen , Hugh Craig Hiner , Benjamin Chen , Xizeng Shi , Kyusik Sin
发明人： Yingjian Chen , Hugh Craig Hiner , Benjamin Chen , Xizeng Shi , Kyusik Sin
IPC分类号： H04R3100
CPC分类号： G11B5/3967 , G11B5/3109 , Y10T29/49032 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49048 , Y10T29/49052 , Y10T29/49062
摘要： A method and system for providing a writer is disclosed. The method and system include providing a first pole, an insulator covering a portion of the first pole and a coil on the first insulator. The coil includes a plurality of turns. The method and system also include providing a second insulator covering the coil, providing a second pole on the second insulator and providing a write gap separating a portion of the first pole from a second portion of the second pole. A first portion of the second pole is coupled with the first pole. In one aspect, the method and system include providing a coil having a plurality of turns with a pitch of no more than 1.2 micrometers. In another aspect, the plurality of turns of the coil is provided using a hard mask layer on a photoresist layer. A portion of the hard mask layer and a portion of the photoresist layer define a plurality of spaces between the pluralities of turns of the coil. In another aspect, the writer is a pedestal defined zero throat writer. In this aspect, the first insulator has a depression therein and the coil is provided on the depression.
摘要翻译：公开了一种用于提供写入器的方法和系统。该方法和系统包括提供第一极，覆盖第一极的一部分的绝缘体和第一绝缘体上的线圈。线圈包括多个匝。该方法和系统还包括提供覆盖线圈的第二绝缘体，在第二绝缘体上提供第二极，并提供将第一极的一部分与第二极的第二部分分开的写间隙。第二极的第一部分与第一极耦合。在一个方面，该方法和系统包括提供具有不超过1.2微米的间距的多个匝的线圈。在另一方面，使用光致抗蚀剂层上的硬掩模层来提供线圈的多圈。硬掩模层的一部分和光致抗蚀剂层的一部分在线圈的多圈之间限定多个空间。在另一方面，作者是一个基座定义的零喉作家。在这方面，第一绝缘体具有凹陷，线圈设置在凹部上。

4. 发明申请

US20050007696A1 Write head having a recessed, magnetic adjunct pole formed atop a main pole, and method of making the same 有权
公开(公告)号：US20050007696A1
公开(公告)日：2005-01-13
申请号：US10903977
申请日：2004-07-29
申请人： Yingjian Chen , Xiaozhong Dang , Francis Liu , Kroum Stoev , Hai Jiang , Yugang Wang , Xizeng Shi
发明人： Yingjian Chen , Xiaozhong Dang , Francis Liu , Kroum Stoev , Hai Jiang , Yugang Wang , Xizeng Shi
IPC分类号： G11B5/127 , G11B5/31 , G11B5/147
CPC分类号： G11B5/1278 , G11B5/3109 , Y10T29/49034 , Y10T29/49044
摘要： A read/write head and method of making the same are used in a data storage system, such as a disk drive, for perpendicular magnetic recording of data. The head employs a two-layer pole design with a main pole made of sputtered high moment magnetic material, and an adjunct pole made of electroplated soft magnetic film. The main pole is used to write data onto the medium, and is formed over the write coil. The adjunct pole is substantially recessed from the air bearing surface and is formed over the main pole. The present head design significantly enhances the magnetic write field, and substantially reduces side-writing that result in accidental erasure of data in adjacent tracks on the magnetic recording medium.

5. 发明授权

US06906894B2 Write head having a recessed, magnetic adjunct pole formed atop a main pole, and method of making the same 有权
标题翻译：具有形成在主极上方的凹入的磁性辅助极的写头及其制造方法
公开(公告)号：US06906894B2
公开(公告)日：2005-06-14
申请号：US10903977
申请日：2004-07-29
申请人： Yingjian Chen , Xiaozhong Dang , Francis H. Liu , Kroum Stoev , Hai Jiang , Yugang Wang , Xizeng Shi
发明人： Yingjian Chen , Xiaozhong Dang , Francis H. Liu , Kroum Stoev , Hai Jiang , Yugang Wang , Xizeng Shi
IPC分类号： G11B5/127 , G11B5/31 , G11B5/147
CPC分类号： G11B5/1278 , G11B5/3109 , Y10T29/49034 , Y10T29/49044
摘要： A read/write head and method of making the same are used in a data storage system, such as a disk drive, for perpendicular magnetic recording of data. The head employs a two-layer pole design with a main pole made of sputtered high moment magnetic material, and an adjunct pole made of electroplated soft magnetic film. The main pole is used to write data onto the medium, and is formed over the write coil. The adjunct pole is substantially recessed from the air bearing surface and is formed over the main pole. The present head design significantly enhances the magnetic write field, and substantially reduces side-writing that result in accidental erasure of data in adjacent tracks on the magnetic recording medium.
摘要翻译：读/写头及其制造方法用于数据存储系统，例如磁盘驱动器，用于数据的垂直磁记录。头部采用双层极设计，其主极由溅射高磁矩材料制成，电极由电镀软磁膜制成。主极用于将数据写入介质，并形成在写入线圈上。辅助杆从空气轴承表面基本上凹入并且形成在主极上。本头设计显着增强了磁写入场，并且基本上减少了导致磁记录介质上的相邻轨道中的数据的意外擦除的侧写。

6. 发明授权

US06791793B1 Perpendicular recording write head having a recessed magnetic adjunct pole and method of making the same 有权
标题翻译：具有嵌入式磁辅助极的垂直记录写头及其制造方法
公开(公告)号：US06791793B1
公开(公告)日：2004-09-14
申请号：US09952989
申请日：2001-09-14
申请人： Yingjian Chen , Xiaozhong Dang , Francis H. Liu , Kroum Stoev , Hai Jiang , Yugang Wang , Xizeng Shi
发明人： Yingjian Chen , Xiaozhong Dang , Francis H. Liu , Kroum Stoev , Hai Jiang , Yugang Wang , Xizeng Shi
IPC分类号： G11B5147
CPC分类号： G11B5/1278 , G11B5/3109 , Y10T29/49034 , Y10T29/49044
摘要： A read/write head and method of making the same, are used in a data storage system, such as a disk drive, for perpendicular magnetic recording of data. The head employs a two-layer pole design with a main pole made of sputtered high moment magnetic material, and an adjunct pole made of electroplated soft magnetic film. The adjunct pole is substantially recessed from the air bearing surface. The present head design significantly enhances the magnetic write field, and substantially reduces side-writing that result in accidental erasure of data in adjacent tracks on the magnetic recording medium.
摘要翻译：读/写头及其制造方法用于数据存储系统，例如磁盘驱动器，用于数据的垂直磁记录。头部采用双层极设计，其主极由溅射高磁矩材料制成，电极由电镀软磁膜制成。附加杆基本上从空气轴承表面凹入。本头设计显着增强了磁写入场，并且基本上减少了导致磁记录介质上的相邻轨道中的数据的意外擦除的侧写。

7. 发明授权

US06724572B1 Inductive transducer with recessed leading pole layer 有权
标题翻译：具有凹陷前导极层的感应传感器
公开(公告)号：US06724572B1
公开(公告)日：2004-04-20
申请号：US10086756
申请日：2002-02-28
申请人： Kroum Stoev , Yugang Wang , Francis Liu , Yingjian Chen , Xiaozhong Dang
发明人： Kroum Stoev , Yugang Wang , Francis Liu , Yingjian Chen , Xiaozhong Dang
IPC分类号： G11B5147
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/187 , G11B5/23 , G11B5/3103 , G11B5/3116 , G11B5/313 , G11B5/3146 , G11B5/332 , G11B5/3909 , G11B5/3967 , G11B2005/3996
摘要： In one aspect, an inductive transducer is disclosed having a leading pole layer and a leading pole tip, with the pole layer being further removed than the pole tip from a media-facing surface. In another aspect, an inductive transducer is disclosed having a magnetic pedestal disposed between a leading pole layer and a leading pole tip, with at least one of the pedestal and pole layer being further removed than the pole tip from a media-facing surface. In another aspect, a leading pole layer or pedestal may have a surface that slopes away from the media-facing surface with increasing distance forward from the leading pole tip.
摘要翻译：在一个方面，公开了一种电感式换能器，其具有引导极层和引导极尖端，其中极层比面向介质的表面比极尖更进一步去除。另一方面，公开了一种电感换能器，其具有设置在引导极层和前导极尖端之间的磁性基座，其中基座和极层中的至少一个比来自面向介质的表面的极尖更进一步地去除。在另一方面，前导极层或基座可以具有远离所述面向介质的表面的表面，所述表面具有与所述引导极端部向前的距离增加的距离。

8. 发明授权

US07113366B1 Double-nosed inductive transducer with reduced off-track writing 有权
标题翻译：双向电感式换能器，减少了离轨写入
公开(公告)号：US07113366B1
公开(公告)日：2006-09-26
申请号：US10290880
申请日：2002-11-07
申请人： Yugang Wang , Kroum Stoev , Francis Liu , Yingjian Chen
发明人： Yugang Wang , Kroum Stoev , Francis Liu , Yingjian Chen
IPC分类号： G11B5/187
CPC分类号： G11B5/3116
摘要： A thin film electromagnetic head has an inductive transducer with a double-nosed ferromagnetic trailing pole layer. The trailing pole layer has a trailing pole tip disposed adjacent to a media-facing surface, a trailing pole yoke disposed distal to the media-facing surface, and a trailing pole nose disposed between the trailing pole tip and the trailing pole yoke. The media-facing surface extends as a substantially flat surface in all directions from the trailing pole tip. The length of the trailing pole nose may be at least twice as long as the trailing pole tip length. The width of the trailing pole nose can be 10 to 30 times as wide as the trailing pole tip width. An inductive transducer having a double-nosed trailing pole layer provides a higher ratio of on-track to off-track write fields, thereby improving the density with which data can be written to the recording media. Such a double-nosed trailing pole layer can be used in transducers for either longitudinal or perpendicular magnetic recording.
摘要翻译：薄膜电磁头具有具有双尖铁磁后极层的感应换能器。后极层具有邻近面向媒体的表面设置的尾极尖端，设置在面向介质的表面的远侧的后极轭，以及设置在后极端和后极轭之间的后极端。面向媒体的表面作为从所述尾杆末端的所有方向上的基本上平坦的表面延伸。尾杆鼻部的长度可以至少是尾杆末端长度的两倍。尾杆鼻的宽度可以是尾杆尖宽度的10至30倍。具有双端尾磁极层的电感式换能器提供了较高的导轨与非磁道写磁场的比率，从而提高了数据可以写入记录介质的密度。这样的双头后磁极层可用于用于纵向或垂直磁记录的换能器中。

9. 发明授权

US06912106B1 Writer with a hot seed zero throat and substantially flat top pole 有权
标题翻译：作者有一个热种子零喉咙和基本平坦的顶极
公开(公告)号：US06912106B1
公开(公告)日：2005-06-28
申请号：US10213532
申请日：2002-08-06
申请人： Yingjian Chen , Qing He , Yugang Wang , Kroum Stoev , Francis Liu , Xiaozhong Dang
发明人： Yingjian Chen , Qing He , Yugang Wang , Kroum Stoev , Francis Liu , Xiaozhong Dang
IPC分类号： G11B5/31 , G11B5/147
CPC分类号： G11B5/3163 , G11B5/3116 , G11B5/3143
摘要： A method and system for providing a recording head is disclosed. The method and system include providing a first pole, a second pole, a write gap and at least one coil. The write cap separates the first pole from the second pole. The coil(s) include a plurality of turns and is between the first and second poles. The first pole includes a pedestal that has a first portion and a second portion. The first portion includes a high moment electroplated material. The second portion includes a hot seed layer that has a high moment sputtered material. The second portion of the first pole is adjacent to the write gap.
摘要翻译：公开了一种用于提供记录头的方法和系统。该方法和系统包括提供第一极，第二极，写间隙和至少一个线圈。写帽将第一极与第二极分开。线圈包括多个匝并且在第一和第二极之间。第一极包括具有第一部分和第二部分的基座。第一部分包括高电流电镀材料。第二部分包括具有高力矩溅射材料的热种子层。第一极的第二部分与写入间隙相邻。

10. 发明授权

US07289303B1 Spin valve sensors having synthetic antiferromagnet for longitudinal bias 失效
标题翻译：旋转阀传感器具有用于纵向偏置的合成反铁磁体
公开(公告)号：US07289303B1
公开(公告)日：2007-10-30
申请号：US09828635
申请日：2001-04-05
申请人： Kyusik Sin , Ningjia Zhu , Yingjian Chen
发明人： Kyusik Sin , Ningjia Zhu , Yingjian Chen
IPC分类号： G11B5/39
CPC分类号： G11B5/3932 , B82Y25/00 , G01R33/093 , H01F10/3272 , Y10T428/1107 , Y10T428/1121 , Y10T428/1143
摘要： Magnetoresistive (MR) sensors are disclosed having mechanisms for reducing edge effects such as Barkhausen noise. The sensors include a pinned layer and a free layer with an exchange coupling layer adjoining the free layer, and a ferromagnetic layer having a fixed magnetic moment adjoining the exchange coupling layer. The exchange coupling layer and ferromagnetic layer form a synthetic antiferromagnetic structure with part of the free layer, providing bias that reduces magnetic instabilities at edges of the free layer. Such synthetic antiferromagnetic structures can provide a stronger bias than conventional antiferromagnetic layers, as well as a more exactly defined track width than conventional hard magnetic bias layers. The synthetic antiferromagnetic structures can also provide protection for the free layer during processing, in contrast with the trimming of conventional antiferromagnetic layers that exposes if not removes part of the free layer.
摘要翻译：公开了具有减小诸如巴克豪森噪声等边缘效应的机构的磁阻（MR）传感器。传感器包括钉扎层和具有邻接自由层的交换耦合层的自由层，以及具有与交换耦合层邻接的固定磁矩的铁磁层。交换耦合层和铁磁层形成具有部分自由层的合成反铁磁结构，提供降低自由层边缘的磁性不稳定性的偏压。这种合成反铁磁结构可以提供比常规反铁磁层更强的偏压，以及比常规硬磁偏置层更精确地定义的轨道宽度。合成反铁磁性结构也可以在加工过程中为自由层提供保护，与如果不除去部分自由层的常规反铁磁层的修整相反。

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