公开(公告)号：US20110102948A1

公开(公告)日：2011-05-05

申请号：US12609764

申请日：2009-10-30

申请人： Dmytro Apalkov ,  Vladimir Nikitin ,  David Druist ,  Steven M. Watts

发明人： Dmytro Apalkov ,  Vladimir Nikitin ,  David Druist ,  Steven M. Watts

IPC分类号： G11B5/33

CPC分类号： H01L43/12 ,  G11C11/161 ,  G11C11/1659 ,  G11C11/1675 ,  G11C11/5607 ,  H01L43/08

摘要： A method and system for providing a magnetic junction usable in a magnetic memory are described. The magnetic junction includes first and second pinned layers, first and second nonmagnetic spacer layers, and a free layer. The first pinned layer has a first pinned layer magnetic moment and is nonmagnetic layer-free. The first nonmagnetic spacer layer resides between the first pinned and free layers. The free layer resides between the first and second nonmagnetic spacer layers. The second pinned layer has a second pinned layer magnetic moment and is nonmagnetic layer-free. The second nonmagnetic spacer layer resides between the free and second pinned layers. The first and second pinned layer magnetic moments are antiferromagnetically coupled and self-pinned. The magnetic junction is configured to allow the free layer to be switched between stable magnetic states when a write current is passed through the magnetic junction.

摘要翻译： 描述了一种用于提供可用于磁存储器中的磁结的方法和系统。 磁结包括第一和第二固定层，第一和第二非磁性间隔层和自由层。 第一被钉扎层具有第一钉扎层磁矩并且是非磁性层。 第一非磁性间隔层位于第一被钉扎层和自由层之间。 自由层位于第一和第二非磁性间隔层之间。 第二被钉扎层具有第二钉扎层磁矩并且是非磁性层。 第二非磁性间隔层位于自由和第二被钉扎层之间。 第一和第二钉扎层磁矩是反铁磁耦合和自固定的。 磁结被配置为当写入电流通过磁性结时，允许自由层在稳定的磁状态之间切换。

公开(公告)号：US07870659B2

公开(公告)日：2011-01-18

申请号：US11852152

申请日：2007-09-07

申请人： Vladimir Nikitin ,  Samuel Wei-san Yuan

发明人： Vladimir Nikitin ,  Samuel Wei-san Yuan

IPC分类号： G11B5/127 ,  H04R31/00

CPC分类号： G11B5/265 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052 ,  Y10T428/1107 ,  Y10T428/1171 ,  Y10T428/1193

摘要： A method for defining a perpendicular magnetic head is provided. The method includes forming a portion of the read and write head including depositing a sensor film on a surface only over a region of the read head to form a sensor; depositing a full-film shaping pole layer over the write head; defining a track width of the sensor; patterning a photoresist to define a pole tip of the write head including write track width and flare position, and at the same time to define a back edge of the sensor; removing material of the sensor and pole tip from the areas not covered by the photoresist; completing the fabrication of the write and read head layers; and lapping the write pole concurrently with the sensor to define the flare position of the pole tip and to define a sensor height with accurate positioning of write head flare.

摘要翻译： 提供了一种用于限定垂直磁头的方法。 该方法包括形成读写头的一部分，包括仅在读头的区域上的表面上沉积传感器膜以形成传感器; 在写入头上沉积全膜成形极层; 定义传感器的轨道宽度; 图案化光致抗蚀剂以限定写入头的磁极尖端，包括写入磁道宽度和扩张位置，同时限定传感器的后边缘; 从未被光致抗蚀剂覆盖的区域移除传感器和极尖的材料; 完成写和读头层的制作; 并且与传感器同时研磨写入极，以限定极尖的扩张位置，并且通过准确定位写头光斑来定义传感器高度。

公开(公告)号：US07770283B2

公开(公告)日：2010-08-10

申请号：US11347356

申请日：2006-02-03

申请人： Daniel Wayne Bedell ,  Vladimir Nikitin ,  Aron Pentek ,  Sue Siyang Zhang

发明人： Daniel Wayne Bedell ,  Vladimir Nikitin ,  Aron Pentek ,  Sue Siyang Zhang

IPC分类号： G11B5/127 ,  H04R31/00

CPC分类号： G11B5/3116 ,  G11B5/3163 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

摘要： A multi-step process for notching the P1 pole of the write head element of a magnetic head. In a first step following the fabrication of the P2 pole tip, a layer of protective material is deposited on the approximately vertical side surfaces of the P2 pole tip. Thereafter, a first ion milling step, utilizing a species such as argon, is performed to mill through the write gap layer and to notch into the P1 pole layer therebelow. The removal of redeposited material from the side surfaces of the P2 pole tip is thereafter accomplished and the protective material formed on the side surfaces of the P2 pole tip protects the P2 pole tip during the redeposition clean up step. Thereafter, the protective material is removed from the side surfaces of the P2 pole tip, and a second ion milling step is performed to further notch the P1 pole material.

摘要翻译： 用于切割磁头的写入头元件的P1极的多步骤过程。 在制造P2极尖之后的第一步骤中，在P2极尖的大致垂直侧表面上沉积有一层保护材料。 此后，进行利用物质如氩的第一离子研磨步骤，通过写入间隙层研磨并陷入其下方的P1极层。 然后，从P2极尖端的侧面去除再沉积材料，并且形成在P2极端部的侧表面上的保护材料在再沉积清洁步骤期间保护P2极尖。 然后，从P2极端部的侧面除去保护材料，进行第二离子研磨工序，进一步切断P1极材料。

公开(公告)号：US07768744B2

公开(公告)日：2010-08-03

申请号：US11743150

申请日：2007-05-02

申请人： Wen-Chien David Hsiao ,  Yimin Hsu ,  Edward Hin Pong Lee ,  Vladimir Nikitin

发明人： Wen-Chien David Hsiao ,  Yimin Hsu ,  Edward Hin Pong Lee ,  Vladimir Nikitin

IPC分类号： G11B5/147 ,  G11B5/17

CPC分类号： G11B5/3116 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3123 ,  G11B5/3146 ,  G11B5/315

摘要： A perpendicular magnetic recording write head has a main pole and return poles that are substantially coplanar. The write head includes a main pole, two return poles and a connecting stud that are all formed as a single layer in a single deposition and patterning step. The coplanar main and return poles lie in a plane parallel to the cross-track direction. The two return poles are thus spaced from the main pole in the cross-track direction. The main pole includes a write pole connected to it but lying in a plane spaced in the along-the-track direction from the plane of the main pole. The write head includes a helical coil wrapped around the main pole. The magnetic flux path is from the write pole to the disk recording layer in a data track aligned with the write pole, to the disk underlayer beneath the recording layer, through the underlayer to data tracks spaced cross-track from the data track aligned with the write pole, and back through the return poles.

摘要翻译： 垂直磁记录写头具有基本上共面的主极和返回极。 写头包括在单个沉积和图案化步骤中都形成为单层的主极，两个返回极和连接柱。 共平面的主极和返回极位于平行于交叉轨道方向的平面中。 因此，两个返回极在交叉轨道方向上与主极间隔开。 主极包括连接到其上的写入极，但是位于沿主轨方向与主极平面间隔开的平面中。 写头包括缠绕在主极上的螺旋线圈。 磁通路径是从记录磁极对准的数据磁道中的写入磁极到磁盘记录层，到记录层下方的磁盘底层，通过底层到从与数据磁道对准的数据磁道间隔开的数据磁道 写柱，并通过返回杆返回。

公开(公告)号：US20100181286A1

公开(公告)日：2010-07-22

申请号：US12750521

申请日：2010-03-30

申请人： Vladimir Nikitin

发明人： Vladimir Nikitin

IPC分类号： G11B5/84

CPC分类号： G11B5/82 ,  B82Y10/00 ,  C23C14/0652 ,  C23C14/081 ,  C23C14/3464 ,  G11B5/743 ,  G11B5/851 ,  G11B5/855 ,  G11B2005/0002

摘要： A method for constructing a magnetic medium for use in data recording that has a series of concentric magnetic track portions separated from one another by non-magnetic portions or gap portions. The disk may be manufactured by depositing first and second materials sequentially onto a rotating tube, the first and second materials having different etch rates. The tube may then be sliced into disks and the disks subjected to a reactive ion etch (RIE) to form a disk surface having concentric raised portions separated by concentric recessed portions. A magnetic material can then be deposited. An optional chemical mechanical polishing process can then be performed to planarize the surface, resulting in a planar surface having rings of magnetic material separated by rings of non-magnetic material.

摘要翻译： 一种构造用于数据记录的磁介质的方法，该磁介质具有由非磁性部分或间隙部分彼此分离的一系列同心磁迹部分。 可以通过将第一和第二材料依次沉积到旋转管上来制造盘，第一和第二材料具有不同的蚀刻速率。 然后将管切成圆盘，并且盘经受反应离子蚀刻（RIE）以形成具有由同心凹入部分分开的同心凸起部分的盘表面。 然后可以沉积磁性材料。 然后可以进行可选的化学机械抛光工艺以使表面平坦化，得到具有由非磁性材料的环分隔的磁性材料环的平坦表面。

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。

公开(公告)号：US20100162556A1

公开(公告)日：2010-07-01

申请号：US12345781

申请日：2008-12-30

申请人： Unal Murat Guruz ,  Edward Hin Pong Lee ,  Vladimir Nikitin ,  Michael Ming Hsiang Yang ,  Yuan Yao

发明人： Unal Murat Guruz ,  Edward Hin Pong Lee ,  Vladimir Nikitin ,  Michael Ming Hsiang Yang ,  Yuan Yao

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/3163 ,  G11B5/3169 ,  G11B5/3196 ,  G11B5/3967 ,  G11B5/455 ,  Y10T29/49036 ,  Y10T29/49041 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

摘要： A method for manufacturing a magnetic head for magnetic data recording, that allows a lapping termination point to be easily and accurately determined during lapping. The method includes constructing a lapping guide that has an electrically is formed to provide an abrupt change in resistance at a point where lapping should be terminated. This point of abrupt resistance change is located relative to the flare point of the write pole that the distance between the flare point and the air bearing surface can be accurately maintained. This abrupt resistance change also makes it possible to monitor both a stripe height defining rough lapping and an angled kiss lapping process using a single measurement channel.

摘要翻译： 一种用于制造用于磁数据记录的磁头的方法，其允许在研磨期间容易且准确地确定研磨终止点。 该方法包括构建具有电气形成的研磨导向器，以在研磨结束的点处提供电阻的突然变化。 这个突变电阻变化点相对于写极点的闪点定位，可以精确地保持扩口和空气支承表面之间的距离。 这种突然的电阻变化也使得可以使用单个测量通道监测限定粗糙研磨的条纹高度和倾斜吻合研磨过程。

公开(公告)号：US07719793B2

公开(公告)日：2010-05-18

申请号：US11322120

申请日：2005-12-28

申请人： Vladimir Nikitin

发明人： Vladimir Nikitin

IPC分类号： G11B5/82

CPC分类号： G11B5/82 ,  B82Y10/00 ,  C23C14/0652 ,  C23C14/081 ,  C23C14/3464 ,  G11B5/743 ,  G11B5/851 ,  G11B5/855 ,  G11B2005/0002

摘要： A magnetic medium for use in data recording that has a series of concentric magnetic track portions separated from one another by non-magnetic portions or gap portions. The magnetic portions define data tracks and prevent signals from one track from bleeding into another track. Because the data tracks are distinctly separated, adjacent track interference is completely avoided. The disk may be manufactured by depositing first and second materials sequentially onto a rotating tube, the first and second materials having different etch rates. The tube may then be slided into disks and the disks subjected to a reactive ion etch (RIE) to form a disk surface having concentric raised portions separated by concentric recessed portions. A magnetic material can then be deposited. An optional chemical mechanical polishing process can then be performed to planarize the surface, resulting in a planar surface having rings of magnetic material separated by rings of non-magnetic material.

摘要翻译： 一种用于数据记录的磁介质，其具有通过非磁性部分或间隙部分彼此分离的一系列同心磁迹部分。 磁性部分定义数据轨道，并防止来自一条轨道的信号渗入另一条轨道。 由于数据轨迹明显分离，完全避免了相邻的轨道干扰。 可以通过将第一和第二材料依次沉积到旋转管上来制造盘，第一和第二材料具有不同的蚀刻速率。 然后可以将管滑入盘中，并且经受反应离子蚀刻（RIE）的盘形成具有由同心凹陷部分开的同心凸起部分的盘表面。 然后可以沉积磁性材料。 然后可以进行可选的化学机械抛光工艺以使表面平坦化，得到具有由非磁性材料的环分隔的磁性材料环的平坦表面。

公开(公告)号：US07633710B2

公开(公告)日：2009-12-15

申请号：US11477724

申请日：2006-06-28

申请人： Edward Hin Pong Lee ,  Vladimir Nikitin

发明人： Edward Hin Pong Lee ,  Vladimir Nikitin

IPC分类号： G11B5/17

CPC分类号： G11B5/17 ,  G11B5/3106 ,  G11B5/3123 ,  G11B5/3136 ,  G11B5/3163

摘要： A magnetic head including an induction coil having coil turns that are disposed between two magnetic poles of the magnetic head. The coil turns include a lower coil turn portion and an upper coil turn portion. In fabricating the induction coil, the lower coil turn portion is fabricated first, and the upper coil turn portion is fabricated directly upon the lower coil turn portion. The lower coil turn portion may be fabricated using damascene methods and the upper coil turn portion may be fabricated utilizing photolithographic methods. The lower coil turn portion and the upper coil turn portion of the induction coil turns are electrically connected, such that the thickness of the overall induction coil turns is increased. As a result, the electrical resistance of the coil turns is decreased, and heat generated in the coil is reduced.

摘要翻译： 磁头包括具有设置在磁头的两个磁极之间的线圈的感应线圈。 线圈匝包括下线圈匝部和上线圈匝部。 在制造感应线圈时，首先制造下线圈匝部，并且将上线圈匝部直接制造在下匝匝部上。 下部线圈匝部分可以使用镶嵌方法制造，并且上部线圈匝部分可以利用光刻方法制造。 感应线圈匝的下线圈匝部和上线圈匝部电连接，使得整个感应线圈匝的厚度增加。 结果，线圈匝的电阻降低，线圈中产生的热量减少。

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。