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1. 发明授权

US07990652B2 Perpendicular magnetic write head with stepped write pole for reduced MCW dependency on skew angle 有权
标题翻译：具有阶梯式写入极的垂直磁性写入头，用于减小MCW对偏斜角的依赖
公开(公告)号：US07990652B2
公开(公告)日：2011-08-02
申请号：US11949620
申请日：2007-12-03
申请人： Wen-Chien David Hsiao , Yimin Hsu , Quan-chiu Harry Lam , Yansheng Luo , Vladimir Nikitin , Changqing Shi
发明人： Wen-Chien David Hsiao , Yimin Hsu , Quan-chiu Harry Lam , Yansheng Luo , Vladimir Nikitin , Changqing Shi
IPC分类号： G11B5/187
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/3146 , G11B5/315
摘要： A magnetic write head for perpendicular magnetic data recording having a notched write pole for reduced magnetic core width (MCW) dependence on skew. The write pole is configured with a notch that can extend to or slightly beyond the flare point of the write pole, and is formed on the leading portion of the write pole. The notch can have a notch depth, as measured from the ABS of 50-200 nm or about 120 nm. The notch can have a notch height, measured in the down track direction that is 40-90 nm or 20-90 percent of the write pole height.
摘要翻译：用于垂直磁数据记录的磁写头，具有用于减小磁芯宽度（MCW）的偏斜写入极对偏斜的依赖性。写入极配置有可以延伸到或稍微超过写入极的闪点的凹口，并且形成在写入极的引导部分上。切口可以具有从50-200nm或约120nm的ABS测量的切口深度。切口可以具有沿向下方向测量的切口高度，其为40-90nm或写入极高度的20-90％。

2. 发明申请

US20090141397A1 PERPENDICULAR MAGNETIC WRITE HEAD WITH STEPPED WRITE POLE FOR REDUCED MCW DEPENDENCY ON SKEW ANGLE 有权
标题翻译：具有逐步写入功能的扁平磁头，用于减少MCW依赖于角度角
公开(公告)号：US20090141397A1
公开(公告)日：2009-06-04
申请号：US11949620
申请日：2007-12-03
申请人： Wen-Chien David Hsiao , Yimin Hsu , Quan-chiu Harry Lam , Yansheng Luo , Vladimir Nikitin , Changqing Shi
发明人： Wen-Chien David Hsiao , Yimin Hsu , Quan-chiu Harry Lam , Yansheng Luo , Vladimir Nikitin , Changqing Shi
IPC分类号： G11B5/127 , G11B5/23
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/3146 , G11B5/315
摘要： A magnetic write head for perpendicular magnetic data recording having a notched write pole for reduced magnetic core width (MCW) dependence on skew. The write pole is configured with a notch that can extend to or slightly beyond the flare point of the write pole, and is formed on the leading portion of the write pole. The notch can have a notch depth, as measured from the ABS of 50-200 nm or about 120 nm. The notch can have a notch height, measured in the down track direction that is 40-90 nm or 20-90 percent of the write pole height.
摘要翻译：用于垂直磁数据记录的磁写头，具有用于减小磁芯宽度（MCW）的偏斜写入极对偏斜的依赖性。写入极配置有可以延伸到或稍微超过写入极的闪点的凹口，并且形成在写入极的引导部分上。切口可以具有从50-200nm或约120nm的ABS测量的切口深度。切口可以具有沿向下方向测量的切口高度，其为40-90nm或写入极高度的20-90％。

3. 发明授权

US08331058B2 Method and apparatus for providing a write head with an improved pole tip to improve overwrite and/or adjacent track interference 失效
标题翻译：用于向写头提供改进的极尖以改善重写和/或相邻轨道干扰的方法和装置
公开(公告)号：US08331058B2
公开(公告)日：2012-12-11
申请号：US10857363
申请日：2004-05-28
申请人： Savas Gider , Wen-Chien David Hsiao , Quan-chiu Harry Lam , Terence Tin-Lok Lam , Edward Hin Pong Lee , Yansheng Luo , Vladimir Nikitin , Changqing Shi , Xiaoyu Sui
发明人： Savas Gider , Wen-Chien David Hsiao , Quan-chiu Harry Lam , Terence Tin-Lok Lam , Edward Hin Pong Lee , Yansheng Luo , Vladimir Nikitin , Changqing Shi , Xiaoyu Sui
IPC分类号： G11B5/127
CPC分类号： G11B5/3116
摘要： A method and apparatus for providing a write head with an improved pole tip to improve overwrite and/or adjacent track interference. A cross pole tip writer is provided with a shape that is designed to reduce the saturation on the pole tip and aid in the concentration of flux to the down track.
摘要翻译：一种用于向写头提供改进的极尖以改善覆盖和/或相邻轨道干扰的方法和装置。十字极尖端写入器具有被设计成减小极尖上的饱和度的形状，并且有助于向下轨道的通量的集中。

4. 发明授权

US08111479B2 Perpendicular magnetic recording head having a notched trailing shield 有权
标题翻译：垂直磁记录头具有带槽口的后挡板
公开(公告)号：US08111479B2
公开(公告)日：2012-02-07
申请号：US11877570
申请日：2007-10-23
申请人： Tsung Yuan Chen , Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin , Changqing Shi
发明人： Tsung Yuan Chen , Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin , Changqing Shi
IPC分类号： G11B5/127 , G11B5/23
CPC分类号： G11B5/3116 , G11B5/1278
摘要： A magnetic write head for perpendicular magnetic data recording having a trailing shield with a two step throat height. The trailing shield is formed over a non-magnetic bump that forms a notch in the leading edge of the trailing shield. This notch defines a first, smaller throat height closest to the write pole and a larger throat height away from the write pole. The smaller throat height near the write pole prevents excess magnetic flux from leaking to the write pole, thereby ensuring efficient strong write field. The larger trailing shield throat height away from the write pole prevents magnetic saturation of the trailing shield and also greatly facilitates manufacturing avoiding problems related to variations and deviations in manufacturing processes used to define the trailing shield.
摘要翻译：用于垂直磁数据记录的磁写头，具有具有两段喉部高度的后挡板。后挡板形成在非磁性凸块上，该非磁性凸块在后挡板的前缘形成凹口。该凹口限定了最靠近写入极的第一较小的喉部高度和远离写入极的较大的喉部高度。写极附近的较小的喉部高度可防止过多的磁通量泄漏到写入极，从而确保有效的强写入场。远离写入极的较大的后屏蔽喉部高度防止尾部屏蔽层的磁饱和，并且还极大地促进制造，避免与用于限定后屏蔽的制造工艺的变化和偏差相关的问题。

5. 发明申请

US20090103211A1 PERPENDICULAR MAGNETIC RECORDING HEAD HAVING A SHORT THROAT HEIGHT WRAP AROUND TRAILING SHIELD 有权
标题翻译：具有短暂的高度的磁带记录头
公开(公告)号：US20090103211A1
公开(公告)日：2009-04-23
申请号：US11877570
申请日：2007-10-23
申请人： Tsung Yuan Chen , Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin , Changqing Shi
发明人： Tsung Yuan Chen , Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin , Changqing Shi
IPC分类号： G11B5/127 , G11B5/11
CPC分类号： G11B5/3116 , G11B5/1278
摘要： A magnetic write head for perpendicular magnetic data recording having a trailing shield with a two step throat height. The trailing shield is formed over a non-magnetic bump that forms a notch in the leading edge of the trailing shield. This notch defines a first, smaller throat height closest to the write pole and a larger throat height away from the write pole. The smaller throat height near the write pole prevents excess magnetic flux from leaking to the write pole, thereby ensuring efficient strong write field. The larger trailing shield throat height away from the write pole prevents magnetic saturation oft the trailing shield and also greatly facilitates manufacturing avoiding problems related to variations and deviations in manufacturing processes used to define the trailing shield.
摘要翻译：用于垂直磁数据记录的磁写头，具有具有两段喉部高度的后挡板。后挡板形成在非磁性凸块上，该非磁性凸块在后挡板的前缘形成凹口。该凹口限定了最靠近写入极的第一较小的喉部高度和远离写入极的较大的喉部高度。写极附近的较小的喉部高度可防止过多的磁通量泄漏到写入极，从而确保有效的强写入场。远离写入极的较大的后屏蔽喉部高度防止尾部屏蔽层的磁饱和，并且还极大地有助于制造，避免与用于限定后屏蔽的制造工艺中的变化和偏差相关的问题。

6. 发明授权

US08068311B2 Perpendicular magnetic write head having a novel trailing return pole for reduced wide-area-track-erasure 有权
标题翻译：垂直磁头写入头具有一个新颖的拖尾返回极，用于缩小广域轨迹擦除
公开(公告)号：US08068311B2
公开(公告)日：2011-11-29
申请号：US12040717
申请日：2008-02-29
申请人： Wen-Chien David Hsiao , Yansheng Luo , Quan-chiu Harry Lam
发明人： Wen-Chien David Hsiao , Yansheng Luo , Quan-chiu Harry Lam
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/312
摘要： A magnetic write head having a magnetic return pole that is configured to prevent wide area track erasure. The magnetic return pole has a throat region with a relatively narrow width and has a inner and outer wing portions formed near the air bearing surface. The inner wing portion has a front edge that is disposed at the air bearing surface, whereas the outer wing portion has a front edge that is recessed from the air bearing surface.
摘要翻译：一种具有磁回归极的磁写头，其被配置为防止广泛的磁道擦除。磁返回杆具有宽度相对较窄的喉部区域，并且在靠近空气支承表面处形成有内翼部分和外翼部分。内翼部具有设置在空气支承面的前缘，而外翼部具有从空气轴承面凹入的前缘。

7. 发明申请

US20090219649A1 PERPENDICULAR MAGNETIC WRITE HEAD HAVING A NOVEL TRAILING RETURN POLE FOR REDUCED WIDE-AREA-TRACK-ERASURE 有权
标题翻译：具有用于减少宽幅面跟踪的新型跟踪返回点的全磁性写磁头
公开(公告)号：US20090219649A1
公开(公告)日：2009-09-03
申请号：US12040717
申请日：2008-02-29
申请人： Wen-Chien David Hsiao , Yansheng Luo , Quan-chiu Harry Lam
发明人： Wen-Chien David Hsiao , Yansheng Luo , Quan-chiu Harry Lam
IPC分类号： G11B5/39 , G11B5/012 , G11B5/31
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/312
摘要： A magnetic write head having a magnetic return pole that is configured to prevent wide area track erasure. The magnetic return pole has a throat region with a relatively narrow width and has a inner and outer wing portions formed near the air bearing surface. The inner wing portion has a front edge that is disposed at the air bearing surface, whereas the outer wing portion has a front edge that is recessed from the air bearing surface.
摘要翻译：一种具有磁回归极的磁写头，其被配置为防止广泛的磁道擦除。磁返回杆具有宽度相对较窄的喉部区域，并且在靠近空气支承表面处形成有内翼部分和外翼部分。内翼部具有设置在空气支承面的前缘，而外翼部具有从空气轴承面凹入的前缘。

8. 发明授权

US07639453B2 Perpendicular magnetic write head with shunt structure to prevent read sensor interference 有权
标题翻译：垂直磁头，分流结构，防止读取传感器干扰
公开(公告)号：US07639453B2
公开(公告)日：2009-12-29
申请号：US11497202
申请日：2006-08-01
申请人： Hardayal Singh Gill , Kuok San Ho , Wen-Chien David Hsiao , Yimin Hsu , Edward Hin Pong Lee , Vladimir Nikitin
发明人： Hardayal Singh Gill , Kuok San Ho , Wen-Chien David Hsiao , Yimin Hsu , Edward Hin Pong Lee , Vladimir Nikitin
IPC分类号： G11B5/127
CPC分类号： G11B5/3123 , G11B5/1278 , G11B5/3967
摘要： A magnetic head structure for use in perpendicular magnetic recording. The magnetic head includes a magnetic write head having a return pole with a magnetic shunt structure extending from the back end opposite the ABS. The magnetic shunt structure prevents magnetic field from the write coil from reaching and affecting the read head. More specifically the shunt structure prevents magnetic field from the portion of the write coil beyond the back gap (as measured from the ABS) from magnetizing a magnetic shield of the read head. The shunt structure is also configured so as to avoid stray field writing. The size and shape of the shunt structure is therefore, limited to avoid attracting stray fields that might cause such stray field writing.
摘要翻译：用于垂直磁记录的磁头结构。磁头包括具有从与ABS相对的后端延伸的磁分路结构的返回极的磁写头。磁分路结构防止来自写入线圈的磁场到达并影响读取头。更具体地说，分流结构防止来自写入线圈的部分的磁场超过后隙（从ABS测量）来磁化读取磁头的磁屏蔽。分流结构也被配置为避免杂散场写入。因此，分流结构的尺寸和形状受到限制，以避免吸引可能导致这种杂散场写入的杂散场。

9. 发明授权

US08108985B2 Method for manufacturing a perpendicular magnetic write head 有权
标题翻译：用于制造垂直磁写头的方法
公开(公告)号：US08108985B2
公开(公告)日：2012-02-07
申请号：US11934687
申请日：2007-11-02
申请人： Yi Zheng , Yimin Hsu , Wen-Chien David Hsiao , Ming Jiang , Aron Pentek , Sue Siyang Zhang , Edward Hin Pong Lee , Hung-Chin Guthrie , Ning Shi , Vladimir Nikitin , Prabodh Ratnaparkhi , Yinshi Liu
发明人： Yi Zheng , Yimin Hsu , Wen-Chien David Hsiao , Ming Jiang , Aron Pentek , Sue Siyang Zhang , Edward Hin Pong Lee , Hung-Chin Guthrie , Ning Shi , Vladimir Nikitin , Prabodh Ratnaparkhi , Yinshi Liu
IPC分类号： G11B5/127 , H04R31/00
CPC分类号： G11B5/3166 , G11B5/112 , G11B5/1278 , G11B5/3116 , G11B5/3146 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052 , Y10T428/11 , Y10T428/1186
摘要： A method for manufacturing a magnetic write head for perpendicular magnetic recording. The method includes forming a write pole, and then depositing a refill layer. A mask structure can be formed over the writ pole and refill layer, the mask structure being configured to define a stitched pole. An ion milling or reactive ion milling can then be performed to remove portions of the refill layer that are not protected by the mask structure. Then a magnetic material can be deposited to form a stitched write pole that defines a secondary flare point. The stitched pole can also be self aligned with an electrical lapping guide in order to accurately locate the front edge of the secondary flare point relative to the air bearing surface of the write head.
摘要翻译：一种用于制造用于垂直磁记录的磁写头的方法。该方法包括形成写极，然后沉积补充层。掩模结构可以形成在写极和再填充层上，掩模结构被配置为限定缝合极。然后可以执行离子铣或反应离子研磨以去除未被掩模结构保护的部分填充层。然后可以沉积磁性材料以形成限定二次闪光点的缝合写入极。缝合的杆也可以与电动研磨引导件自对准，以便相对于写入头的空气轴承表面精确地定位二次扩张点的前边缘。

10. 发明授权

US07881019B2 Two step corner recess for secondary stray field reduction in a perpendicular magnetic recording head 有权
标题翻译：用于垂直磁记录头中二次杂散场减少的两步拐角凹槽
公开(公告)号：US07881019B2
公开(公告)日：2011-02-01
申请号：US11391835
申请日：2006-03-28
申请人： Wen-Chien David Hsiao , Yimin Hsu , Ming Jiang , Vladimir Nikitin
发明人： Wen-Chien David Hsiao , Yimin Hsu , Ming Jiang , Vladimir Nikitin
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： G11B5/1278 , G11B5/3116
摘要： A magnetic structure for use in a magnetic head for avoiding stray field writing. The magnetic structure can be for example a magnetic shield or could be a magnetic pole of a write head and is particularly advantageous for use in a perpendicular recording system, because such perpendicular recording systems are especially susceptible to stray field writing. The magnetic structure includes a forward protruding portion that extends toward the air bearing surface (ABS) of the head also includes first and second wing portions that extend laterally from the forward protruding portion. The wing portions each have includes an inner constant recess portion, and an outer tapered portion. The inner constant recess portion of each wing prevents stray field writing while also preventing magnetic saturation, the outer tapered portions, which taper away from the ABS as they extend laterally outward, further prevent stray field writing by removing the outer corners of the shield away from the ABS.
摘要翻译：用于磁头的磁结构，用于避免杂散场写入。磁性结构可以是例如磁屏蔽或者可以是写入磁头的磁极，并且对于在垂直记录系统中使用是特别有利的，因为这样的垂直记录系统特别容易受到杂散磁场写入的影响。磁性结构包括朝向头部的空气支承表面（ABS）延伸的向前突出部分还包括从前突出部分横向延伸的第一和第二翼部分。翼部各自包括内部恒定凹部和外锥形部。每个翼的内部恒定凹部防止杂散场写入，同时也防止磁饱和，当锥形横向向外延伸时，远离ABS逐渐变细的外锥形部分进一步防止杂散场写入，通过将屏蔽的外角除去 ABS。

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