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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。

3. 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。

4. 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。

5. 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。

6. 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％。

7. 发明授权

US07538976B2 Trailing shield design for reducing wide area track erasure (water) in a perpendicular recording system 失效
标题翻译：拖尾盾设计，用于减少垂直记录系统中的广域轨迹擦除（水）
公开(公告)号：US07538976B2
公开(公告)日：2009-05-26
申请号：US11412017
申请日：2006-04-25
申请人： Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin
发明人： Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin
IPC分类号： G11B5/127
CPC分类号： G11B5/3146 , G11B5/11 , G11B5/1278 , G11B5/3116
摘要： A magnetic structure for use in a magnetic head for avoiding wide angle track erasure and other forms of adjacent track interference. The magnetic structure includes a trailing shield having a specially configured back edge opposite the air bearing surface ABS. The magnetic shield has a shallow substantially constant throat height at a center portion. Then, the back edge of the shield tapers back away from the ABS in first and second intermediate portion located at either side of the center portion. These intermediate portions lead to first and second outer portions that have substantially constant throat heights that are larger than the throat height at the center region. The throat height at each of the laterally outer portions can be 1.5 to 5 times the throat height of the center portion. This configuration, chokes off stray fields that might be picked up by the outer portions of the shield preventing excessive magnetic flux from reaching the central portion of the shield where it might affect writing. In addition, the limited throat height of the outer portion (ie. the back edge of the outer portions does not keep tapering back away from the ABS) prevents the outer portions from picking up too much stray magnetic field, while also ensuring that sufficient magnetic material will be present to absorb desired magnetic field from the write pole during use.
摘要翻译：用于磁头的磁结构，用于避免广角跟踪擦除和其他形式的相邻轨道干扰。磁性结构包括后挡板，其具有与空气轴承表面ABS相对的特殊配置的后边缘。磁屏蔽件在中心部分具有浅实质上恒定的喉部高度。然后，屏蔽件的后边缘在位于中心部分两侧的第一和第二中间部分中从ABS逐渐变细。这些中间部分导致第一和第二外部部分具有大于喉部高度在中心区域处大致恒定的喉部高度。每个横向外部部分的喉部高度可以是中心部分的喉部高度的1.5至5倍。这种构造可以消除可能由屏蔽外部拾取的杂散场，防止过多的磁通量到达屏蔽的中心部分，从而可能影响写入。此外，外部部分的限制喉部高度（即，外部部分的后边缘不保持从ABS退回）防止外部部分拾取太多的杂散磁场，同时还确保足够的磁将存在材料以在使用期间从写入极吸收期望的磁场。

8. 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。

9. 发明授权

US07506431B2 Method of manufacturing a perpendicular magnetic write head having a wrap-around trailing shield and a concave trailing edge main pole 有权
标题翻译：制造具有环绕后挡板和凹后缘主极的垂直磁写头的方法
公开(公告)号：US07506431B2
公开(公告)日：2009-03-24
申请号：US11744022
申请日：2007-05-03
申请人： Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin , Aron Pentek , Yi Zheng
发明人： Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin , Aron Pentek , Yi Zheng
IPC分类号： G11B5/127 , H04R31/00
CPC分类号： G11B5/3163 , G11B5/3116 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： A method for manufacturing a magnetic write head for perpendicular magnetic recording. The method allows the write head to be formed with a write pole having a concave trailing edge. The method further allows the amount of concavity of the trailing edge to be accurately and carefully controlled both within a wafer and between wafers. A write pole is formed using a mask that includes a hard mask, a RIEable layer and an endpoint detection layer. A layer of non-magnetic material (ALD layer) is deposited, and then, an ion milling process is used to remove a portion of the ALD layer disposed over the write pole and mask. A reactive ion etch process is performed to remove the RIEable layer leaving the ALD layer to form non-magnetic side walls with upper portions that extend above the write pole. Another ion milling is then performed, preferably at an angle relative to normal, such that shadowing from the upper portions of the non-magnetic side walls causes the ion milling to form the write pole with a concave trailing edge.
摘要翻译：一种用于制造用于垂直磁记录的磁写头的方法。该方法允许写头形成有具有凹形后缘的写入极。该方法还允许在晶片内和晶片之间精确地和仔细地控制后缘的凹陷量。使用包括硬掩模，RIEable层和端点检测层的掩模形成写入极。沉积一层非磁性材料（ALD层），然后使用离子铣削工艺去除设置在写入极和掩模上的ALD层的一部分。执行反应离子蚀刻工艺以去除离开ALD层的RIEable层以形成非磁性侧壁，其上部在写极上方延伸。然后进行另一个离子铣削，优选以相对于法线成一角度，使得来自非磁性侧壁的上部的阴影使得离子铣削形成具有凹形后缘的写入极。

10. 发明申请

US20080271308A1 METHOD OF MANUFACTURING A PERPENDICULAR MAGNETIC WRITE HEAD HAVING A WRAP-AROUND TRAILING SHIELD AND A CONCAVE TRAILING EDGE MAIN POLE 有权
标题翻译：制造具有缠绕护栏和凹凸条纹边缘的普通磁性写头的方法
公开(公告)号：US20080271308A1
公开(公告)日：2008-11-06
申请号：US11744022
申请日：2007-05-03
申请人： Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin , Aron Pentek , Yi Zheng
发明人： Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin , Aron Pentek , Yi Zheng
IPC分类号： G11B5/127 , C23C14/00
CPC分类号： G11B5/3163 , G11B5/3116 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： A method for manufacturing a magnetic write head for perpendicular magnetic recording. The method allows the write head to be formed with a write pole having a concave trailing edge. The method further allows the amount of concavity of the trailing edge to be accurately and carefully controlled both within a wafer and between wafers. A write pole is formed using a mask that includes a hard mask, a RIEable layer and an endpoint detection layer. A layer of non-magnetic material (ALD layer) h deposited, and then, an ion milling process is used to remove a portion of the ALD layer disposed over the write pole and mask. A reactive ion etch process is performed to remove the RIEable layer leaving the ALD layer to form non-magnetic side walls with upper portions that extend above the write pole. Another ion milling is then performed, preferably at an angle relative to normal, such that shadowing from the upper portions of the non-magnetic side walls causes the ion milling to form the write pole with a concave trailing edge.
摘要翻译：一种用于制造用于垂直磁记录的磁写头的方法。该方法允许写头形成有具有凹形后缘的写入极。该方法还允许在晶片内和晶片之间精确地和仔细地控制后缘的凹陷量。使用包括硬掩模，RIEable层和端点检测层的掩模形成写入极。沉积一层非磁性材料（ALD层），然后使用离子铣削工艺去除设置在写入极和掩模上的一部分ALD层。执行反应离子蚀刻工艺以去除离开ALD层的RIEable层以形成非磁性侧壁，其上部在写极上方延伸。然后进行另一个离子铣削，优选以相对于法线成一角度，使得来自非磁性侧壁的上部的阴影使得离子铣削形成具有凹形后缘的写入极。

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