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1. 发明授权

US08547660B2 Magnetic write head manufactured by an enhanced damascene process producing a tapered write pole with a non-magnetic spacer and non-magnetic bump 有权
标题翻译：通过增强的镶嵌工艺制造的磁性写头，其产生具有非磁性间隔物和非磁性凸块的锥形写柱
公开(公告)号：US08547660B2
公开(公告)日：2013-10-01
申请号：US12641251
申请日：2009-12-17
申请人： Donald G. Allen , Amanda Baer , Yingjian Chen , Andrew Chiu , Liubo Hong , Wen-Chien D. Hsiao , Edward H. P. Lee , Fenglin Liu , Aron Pentek , Katalin Pentek , Kyusik Shin , Yi Zheng , Qiping Zhong , Honglin Zhu
发明人： Donald G. Allen , Amanda Baer , Yingjian Chen , Andrew Chiu , Liubo Hong , Wen-Chien D. Hsiao , Edward H. P. Lee , Fenglin Liu , Aron Pentek , Katalin Pentek , Kyusik Shin , Yi Zheng , Qiping Zhong , Honglin Zhu
IPC分类号： G11B5/127
CPC分类号： G11B5/3163 , G11B5/112 , G11B5/1278 , G11B5/3116 , G11B5/314 , G11B5/3143 , G11B5/3146 , G11B5/315 , Y10T428/11 , Y10T428/1171
摘要： A magnetic write head having a tapered trailing edge and having a magnetic layer formed over a trailing edge of the write pole at a location recessed from the ABS, the magnetic layer being separated from the trailing edge of the write pole by a thin non-magnetic layer. The thin non-magnetic layer is preferably sufficiently thin that the magnetic layer can function as a portion of the write pole in a region removed from the ABS. A trailing magnetic shield is formed over the write pole and is separated from the write pole by a non-magnetic trailing gap layer. A non-magnetic spacer layer can be formed over the magnetic layer to provide additional separation between the magnetic layer and the trailing magnetic shield.
摘要翻译：一种具有锥形后缘并具有磁性层的磁性写头，该磁性层形成在从ABS的凹陷处的写入极的后缘上，该磁性层通过薄的非磁性的方式与写入极的后缘分离层。薄的非磁性层优选地足够薄，使得磁性层可以在从ABS去除的区域中用作写入极的一部分。尾磁屏蔽形成在写极上，并且通过非磁性拖尾间隙层与写极分离。可以在磁性层之上形成非磁性间隔层，以在磁性层和尾部磁屏蔽之间提供额外的间隔。

2. 发明授权

US07748103B2 Method of manufacturing a perpendicular magnetic recording write head with notched trailing shield 失效
标题翻译：制造带切口后挡板的垂直磁记录写头的方法
公开(公告)号：US07748103B2
公开(公告)日：2010-07-06
申请号：US11379969
申请日：2006-04-24
申请人： Donald G. Allen , Amanda Baer , Michael Feldbaum , Wen-Chien David Hsiao , Vladimir Nikitin , Aron Pentek , Katalin Pentek
发明人： Donald G. Allen , Amanda Baer , Michael Feldbaum , Wen-Chien David Hsiao , Vladimir Nikitin , Aron Pentek , Katalin Pentek
IPC分类号： G11B5/187 , G11B5/23
CPC分类号： G11B5/1278 , G11B5/11 , G11B5/3116 , G11B5/3146 , G11B5/3163 , Y10T29/49039 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： A perpendicular magnetic recording write head has a write pole, a trapezoidal-shaped trailing shield notch, and a metal gap layer between the write pole and notch. The write pole has a trailing edge that has a width substantially defining the track width and that faces the front edge of the notch but is spaced from it by the gap layer. The write head is fabricated by reactive ion beam etching of a thin mask film above the write pole to remove the mask film and widen the opening at the edges of the write pole. The gap layer and notch are deposited into the widened opening above the write pole. The write pole has nonmagnetic filler material, such as alumina, surrounding it except at its trailing edge, where it is in contact with the gap layer, which is formed of a different material than the surrounding filler material.
摘要翻译：垂直磁记录写头具有写极，梯形后屏蔽切口和写极和凹口之间的金属间隙层。写入极具有后缘，其具有基本上限定轨道宽度的宽度并且面向凹口的前边缘，但是通过间隙层与其间隔开。写头通过在写极上方的薄掩模膜的反应离子束蚀刻来制造，以去除掩模膜并加宽写入极的边缘处的开口。间隙层和凹口沉积在写柱上方的加宽开口中。写极具有非磁性填充材料，例如氧化铝，除了其后缘外围，其与间隙层接触，间隙层由与周围填料材料不同的材料形成。

3. 发明授权

US07576951B2 Perpendicular magnetic write head having a magnetic write pole with a concave trailing edge 有权
标题翻译：具有磁写入磁极的垂直磁性写头具有凹形后缘
公开(公告)号：US07576951B2
公开(公告)日：2009-08-18
申请号：US11411556
申请日：2006-04-25
申请人： Donald G. Allen , Amanda Baer , Michael Feldbaum , Hung-Chin Guthrie , Wen-Chien David Hsiao , Yimin Hsu , Ming Jiang , Yinshi Liu , Aaron Neuhaus , Vladimir Nikitin , Aron Pentek , Katalin Pentek , Yi Zheng
发明人： Donald G. Allen , Amanda Baer , Michael Feldbaum , Hung-Chin Guthrie , Wen-Chien David Hsiao , Yimin Hsu , Ming Jiang , Yinshi Liu , Aaron Neuhaus , Vladimir Nikitin , Aron Pentek , Katalin Pentek , Yi Zheng
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/11 , G11B5/1278 , G11B5/1871 , G11B5/3146 , G11B5/315 , G11B5/3163
摘要： A magnetic write head for perpendicular magnetic recording having a write pole with a concave trailing edge. The magnetic write pole can have a trapezoidal shape with first and second laterally opposed sides that are further apart at the trailing edge than at the leading edge. The write head may or may not include a magnetic trailing shield, and if a trailing shield is included it is separated from the trailing edge by a non-magnetic write gap layer. The concave trailing edge improves magnetic performance such as by improving the transition curvature. A method for constructing the write head includes forming a magnetic write pole by forming a mask structure over a deposited write pole material, the mask structure having an alumina hard mask and an image transfer layer such as DURAMIDE®. An alumina fill layer is then deposited and a chemical mechanical polish is performed to open up the image transfer layer. A reactive on etch is performed to remove the image transfer layer and a reactive ion mill or reactive ion etch is performed to remove the alumina hard mask and form a concave surface on the write pole.
摘要翻译：用于垂直磁记录的磁写头，具有带有凹后缘的写极。磁性写入极可以具有梯形形状，其中第一和第二横向相对侧在后缘处比在前缘处更远地分开。写头可以包括或可以不包括磁性后屏蔽，并且如果包括后屏蔽，则其通过非磁性写间隙层与后缘分离。凹形后边缘提高磁性能，例如通过改善转变曲率。构成写入头的方法包括通过在沉积的写入极材料上形成掩模结构来形成磁性写入极，掩模结构具有氧化铝硬掩模和诸如DURAMIDE的图像转移层。然后沉积氧化铝填充层，并执行化学机械抛光以打开图像转印层。执行反应性蚀刻以去除图像转印层，并且执行反应性离子磨或反应离子蚀刻以除去氧化铝硬掩模并在写入极上形成凹面。

4. 发明申请

US20080002290A1 Damascene coil design for a perpendicular magnetic recording head 有权
标题翻译：大马士革线圈设计用于垂直磁记录头
公开(公告)号：US20080002290A1
公开(公告)日：2008-01-03
申请号：US11478925
申请日：2006-06-30
申请人： Donald G. Allen , Edward Hin Pong Lee , Jennifer Ai-Ming Loo
发明人： Donald G. Allen , Edward Hin Pong Lee , Jennifer Ai-Ming Loo
IPC分类号： G11B5/17
CPC分类号： G11B5/1278 , G11B5/3123 , G11B5/3163
摘要： A magnetic recording head for use in perpendicular magnetic recording having a design that allows the write coil to be manufactured by a damascene process for increased coil pitch and reduced coil resistance. The magnetic write head includes a photoresist dam structure that allows a hard baked photoresist to be formed that does not extend to the air bearing surface (ABS). Since the photoresist dam prevents the hard baked photoresist from reaching the ABS, the a damascene process, in which the hard baked photoresist remains in the finished write head, can be used to produce the write head. The use of such a damascene process advantageously allows the space between the coil turns to be reduced, which maximizes the number of turns that can be used and also maximizes the number width to which the coil turns can be constructed, thereby minimizing the electrical resistance of the write coil.
摘要翻译：一种用于垂直磁记录的磁记录头，其具有允许通过镶嵌工艺制造写入线圈以增加线圈间距并减小线圈电阻的设计。磁写头包括光致抗蚀剂阻挡结构，其允许形成不延伸到空气轴承表面（ABS）的硬烘烤光致抗蚀剂。由于光致抗蚀剂防止了硬烘烤的光致抗蚀剂到达ABS，所以可以使用其中硬烘烤的光致抗蚀剂保留在完成的写入头中的镶嵌工艺来产生写入头。使用这种镶嵌工艺有利地减小了线圈匝之间的空间，这使得可以使用的匝数最大化，并且还使构造线圈匝数的数量最大化，从而最小化电阻写线圈。

5. 发明申请

US20130082027A1 METHOD FOR MANUFACTURING A PERPENDICULAR MAGNETIC WRITE HEAD USING NOVEL REACTIVE ION ETCHING CHEMISTRY 审中-公开
标题翻译：使用新型反应离子蚀刻化学品制造一个完整磁性写头的方法
公开(公告)号：US20130082027A1
公开(公告)日：2013-04-04
申请号：US13251058
申请日：2011-09-30
申请人： Guomin Mao , Donald G. Allen , Aron Pentek , Thomas J. A. Roucoux , Yi Zheng
发明人： Guomin Mao , Donald G. Allen , Aron Pentek , Thomas J. A. Roucoux , Yi Zheng
IPC分类号： G11B5/127
CPC分类号： G11B5/3163 , G11B5/1278 , G11B5/3116
摘要： A method for manufacturing a magnetic write head for magnetic data recording. The method includes forming a depositing a magnetic write pole material and forming a mask structure over the write pole material that includes a polymer mask under-layer, a dielectric hard mask formed over the polymer mask under-layer and a photoresist mask formed over the dielectric hard mask. The image of the photoresist mask is transferred onto the underlying dielectric hard mask and then a reactive ion etching is performed to transfer the image of the dielectric hard mask onto the polymer mask under-layer. This reactive ion etching is performed in an atmosphere chemistry that includes both an oxygen containing gas and a nitrogen containing gas.
摘要翻译：一种用于制造用于磁数据记录的磁写头的方法。该方法包括形成磁性写入极材料的沉积，并在包括聚合物掩模底层的写入极材料上形成掩模结构，在聚合物掩模底层上形成的电介质硬掩模和形成在电介质上的光致抗蚀剂掩模硬面膜将光致抗蚀剂掩模的图像转印到下面的电介质硬掩模上，然后进行反应离子蚀刻，以将电介质硬掩模的图像转印到聚合物掩模底层上。该反应离子蚀刻在包含含氧气体和含氮气体的气氛化学中进行。

6. 发明申请

US20120162821A1 WRITE HEAD WITH ROTATIONAL WRITE FIELD 审中-公开
标题翻译：具有旋转写字段的写头
公开(公告)号：US20120162821A1
公开(公告)日：2012-06-28
申请号：US12979208
申请日：2010-12-27
申请人： Quan-Chiu Harry Lam , Donald G. Allen , Yansheng Luo
发明人： Quan-Chiu Harry Lam , Donald G. Allen , Yansheng Luo
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/1278
摘要： The present disclosure describes various ways to achieve a rotational write field using a single coil. For example, a rotational write field can be achieved with a single coil by using different yoke lengths for different poles of a write element. Also described are ways to achieve a rotational write field with a single coil by varying the resistivity, saturation flux density, or pole width of the different poles of the write element of the present invention. The present disclosure also describes various ways to achieve a rotational write field using varied windings of a single coil.
摘要翻译：本公开描述了使用单个线圈来实现旋转写入场的各种方式。例如，通过对写元件的不同极使用不同的轭长度，可以用单个线圈实现旋转写入场。还描述了通过改变本发明的写入元件的不同极的电阻率，饱和磁通密度或极宽度来实现具有单个线圈的旋转写入场的方式。本公开还描述了使用单个线圈的不同绕组实现旋转写入场的各种方式。

7. 发明申请

US20110151279A1 MAGNETIC WRITE HEAD MANUFACTURED BY AN ENHANCED DAMASCENE PROCESS PRODUCING A TAPERED WRITE POLE WITH A NON-MAGNETIC SPACER AND NON-MAGNETIC BUMP 有权
标题翻译：通过增强的大面积工艺制造的磁性写头，用非磁性间隔器和非磁性块形成带状写入点
公开(公告)号：US20110151279A1
公开(公告)日：2011-06-23
申请号：US12641251
申请日：2009-12-17
申请人： Donald G. Allen , Amanda Baer , Yingjian Chen , Andrew Chiu , Liubo Hong , Wen-Chien D. Hsiao , Edward H.P. Lee , Fenglin Liu , Aron Pentek , Katalin Pentek , Kyusik Shin , Yi Zheng , Qiping Zhong , Honglin Zhu
发明人： Donald G. Allen , Amanda Baer , Yingjian Chen , Andrew Chiu , Liubo Hong , Wen-Chien D. Hsiao , Edward H.P. Lee , Fenglin Liu , Aron Pentek , Katalin Pentek , Kyusik Shin , Yi Zheng , Qiping Zhong , Honglin Zhu
IPC分类号： G11B5/33
CPC分类号： G11B5/3163 , G11B5/112 , G11B5/1278 , G11B5/3116 , G11B5/314 , G11B5/3143 , G11B5/3146 , G11B5/315 , Y10T428/11 , Y10T428/1171
摘要： A magnetic write head having a tapered trailing edge and having a magnetic layer formed over a trailing edge of the write pole at a location recessed from the ABS, the magnetic layer being separated from the trailing edge of the write pole by a thin non-magnetic layer. The thin non-magnetic layer is preferably sufficiently thin that the magnetic layer can function as a portion of the write pole in a region removed from the ABS. A trailing magnetic shield is formed over the write pole and is separated from the write pole by a non-magnetic trailing gap layer. A non-magnetic spacer layer can be formed over the magnetic layer to provide additional separation between the magnetic layer and the trailing magnetic shield.
摘要翻译：一种具有锥形后缘并具有磁性层的磁性写头，该磁性层形成在从ABS的凹陷处的写入极的后缘上，该磁性层通过薄的非磁性的方式与写入极的后缘分离层。薄的非磁性层优选地足够薄，使得磁性层可以在从ABS去除的区域中用作写入极的一部分。尾磁屏蔽形成在写极上，并且通过非磁性拖尾间隙层与写极分离。可以在磁性层之上形成非磁性间隔层，以在磁性层和尾部磁屏蔽之间提供额外的间隔。

8. 发明申请

US20110134569A1 PMR WRITER AND METHOD OF FABRICATION 有权
标题翻译： PMR WRITER和制造方法
公开(公告)号：US20110134569A1
公开(公告)日：2011-06-09
申请号：US12634533
申请日：2009-12-09
申请人： Donald G. Allen , Liubo Hong , Aron Pentek , Thomas J. A. Roucoux , Sue S. Zhang , Yi Zheng
发明人： Donald G. Allen , Liubo Hong , Aron Pentek , Thomas J. A. Roucoux , Sue S. Zhang , Yi Zheng
IPC分类号： G11B5/10
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/31
摘要： Methods for fabrication of tapered magnetic poles with a non-magnetic front bump layer. A magnetic pole may have a plurality of tapered surfaces at or near and air bearing surface (ABS), wherein a thickness of the write pole increases in a direction away from the ABS. A non-magnetic front bump layer may be formed on one or more of the tapered surfaces of the magnetic pole at a distance from the ABS. The front bump layer may increase the separation distance between a shield layer and the magnetic pole near the tapered surface, thereby improving the performance of the write head.
摘要翻译：用非磁性前凸块层制造锥形磁极的方法。磁极可以在空气轴承表面（ABS）处或附近具有多个锥形表面，其中写入极的厚度在远离ABS的方向上增加。可以在与ABS相距一定距离处的磁极的一个或多个锥形表面上形成非磁性前凸块层。前凸块层可以增加在锥形表面附近的屏蔽层和磁极之间的间隔距离，从而提高写入头的性能。

9. 发明授权

US07933096B2 Layered return poles for magnetic write heads 有权
标题翻译：用于磁性写入头的分层返回极
公开(公告)号：US07933096B2
公开(公告)日：2011-04-26
申请号：US12005558
申请日：2007-12-26
申请人： Donald G. Allen , Hieu Lam , Terence Tin-Lok Lam , Steve C. Puga
发明人： Donald G. Allen , Hieu Lam , Terence Tin-Lok Lam , Steve C. Puga
IPC分类号： G11B5/33
CPC分类号： G11B5/3153 , G11B5/1278
摘要： Methods and structures for the fabrication of both thin film longitudinal and perpendicular write heads are disclosed. A unique feature of these write heads is the inclusion of layered return poles, which comprise alternating layers of 22/78 and 80/20 NiFe alloys. The alternating layers also vary in thickness, the 22/78 NiFe layers having a nominal thickness of 1500 angstroms and the 80/20 NiFe layers having a nominal thickness of about 75 angstroms. Head efficiency and signal to noise ratios are significantly improved in heads having layered return pole construction.
摘要翻译：公开了用于制造薄膜纵向和垂直写入头的方法和结构。这些写头的一个独特之处在于包含层叠的返回极，其包括22/78和80/20 NiFe合金的交替层。交替层的厚度也变化，22/78 NiFe层的标称厚度为1500埃，而80/20 NiFe层的标称厚度为约75埃。在具有分层回极结构的头部中，头部效率和信噪比显着提高。

10. 发明申请

US20100157471A1 WRITE HEAD WITH DIFFERENT UPPER AND LOWER YOKE LENGTHS AND METHODS FOR MAKING THE SAME 有权
标题翻译：具有不同上限和下限长度的写头及其制造方法
公开(公告)号：US20100157471A1
公开(公告)日：2010-06-24
申请号：US12341908
申请日：2008-12-22
申请人： Donald G. Allen , Wen-Chien David Hsiao , Edward Hin Pong Lee , Jennifer Leung , Vladimir Nikitin
发明人： Donald G. Allen , Wen-Chien David Hsiao , Edward Hin Pong Lee , Jennifer Leung , Vladimir Nikitin
IPC分类号： G11B5/17
CPC分类号： G11B5/1278 , G11B5/17 , G11B5/3116 , G11B5/3123
摘要： According to one embodiment, a system comprises an upper yoke having a first length defined between a pole tip thereof and a back gap thereof. In addition, the system includes a lower yoke having a second length defined between a pole tip thereof and a back gap thereof, the second length being greater than the first length. Also, the system includes coil turns in the upper and lower yokes. Additional systems and methods are also presented.
摘要翻译：根据一个实施例，一种系统包括上轭，其具有限定在其极端之间的第一长度和其后间隙。此外，该系统包括具有限定在其极端和其后间隙之间的第二长度的下轭，第二长度大于第一长度。而且，该系统包括上轭和下轭的线圈匝。还介绍了其他系统和方法。

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