公开(公告)号：US20130154036A1

公开(公告)日：2013-06-20

申请号：US13332305

申请日：2011-12-20

申请人： Xueti Tang ,  Dmytro Apalkov ,  Steven M. Watts ,  Kiseok Moon ,  Vladimir Nikitin

发明人： Xueti Tang ,  Dmytro Apalkov ,  Steven M. Watts ,  Kiseok Moon ,  Vladimir Nikitin

IPC分类号： H01L43/10 ,  H01L43/12

CPC分类号： H01L43/08 ,  G11C11/161 ,  G11C11/5607 ,  H01F10/3254 ,  H01F10/3286 ,  H01F10/3295

摘要： A method and system provide a magnetic junction usable in a magnetic device. The magnetic junction includes a pinned layer, a nonmagnetic spacer layer, a free layer, at least one insulating layer, and at least one magnetic insertion layer adjoining the at least one insulating layer. The nonmagnetic spacer layer is between the pinned layer and the free layer. The at least one insulating layer is adjacent to at least one of the free layer and the pinned layer. The at least one magnetic insertion layer adjoins the at least one insulating layer. In some aspects, the insulating layer(s) include at least one of magnesium oxide, aluminum oxide, tantalum oxide, ruthenium oxide, titanium oxide, and nickel oxide The magnetic junction is configured such that the free layer is switchable between a plurality of stable magnetic states when a write current is passed through the magnetic junction.

摘要翻译： 一种方法和系统提供可用于磁性装置的磁结。 磁结包括钉扎层，非磁性间隔层，自由层，至少一个绝缘层以及与至少一个绝缘层邻接的至少一个磁性插入层。 非磁性间隔层位于被钉扎层和自由层之间。 至少一个绝缘层与自由层和钉扎层中的至少一个相邻。 所述至少一个磁性插入层邻接所述至少一个绝缘层。 在一些方面，绝缘层包括氧化镁，氧化铝，氧化钽，氧化钌，氧化钛和氧化镍中的至少一种。磁结被构造成使得自由层可在多个稳定的 写入电流通过磁性结时的磁状态。

公开(公告)号：US08446761B2

公开(公告)日：2013-05-21

申请号：US13031001

申请日：2011-02-18

申请人： Dmytro Apalkov ,  Xueti Tang ,  Vladimir Nikitin ,  Alexander A. G. Driskill-Smith

发明人： Dmytro Apalkov ,  Xueti Tang ,  Vladimir Nikitin ,  Alexander A. G. Driskill-Smith

IPC分类号： G11C11/15

CPC分类号： G11C11/5607 ,  G11C11/161 ,  G11C11/1659 ,  G11C11/1675

摘要： A method and system for providing a magnetic junction usable in a magnetic device are described. The magnetic junction includes a pinned layer, a plurality of nonmagnetic spacer layers, and a plurality of free layers. The free layers are interleaved with the nonmagnetic spacer layers. A first nonmagnetic spacer layer of the nonmagnetic spacer layers is between the free layers and the pinned layer. Each of the free layers is configured to be switchable between stable magnetic states when a write current is passed through the magnetic junction. Each of the free layers has a critical switching current density. The critical switching current density of one of the free layers changes monotonically from the critical switching current density of an adjacent free layer. The adjacent free layer is between the pinned layer and the one of the plurality of free layers.

摘要翻译： 描述了一种用于提供可用于磁性装置中的磁结的方法和系统。 磁结包括钉扎层，多个非磁性间隔层和多个自由层。 自由层与非磁性间隔层交错。 非磁性间隔层的第一非磁性间隔层位于自由层和被钉扎层之间。 每个自由层配置成当写入电流通过磁结时在稳定磁状态之间切换。 每个自由层具有关键的开关电流密度。 一个自由层的关键开关电流密度从相邻自由层的临界开关电流密度单调变化。 相邻的自由层在被钉扎层和多个自由层中的一个之间。

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。

公开(公告)号：US20120170357A1

公开(公告)日：2012-07-05

申请号：US13031001

申请日：2011-02-18

申请人： Dmytro Apalkov ,  Xueti Tang ,  Vladimir Nikitin ,  Alexander A.G. Driskill-Smith

发明人： Dmytro Apalkov ,  Xueti Tang ,  Vladimir Nikitin ,  Alexander A.G. Driskill-Smith

IPC分类号： G11C11/16 ,  G11B5/64

CPC分类号： G11C11/5607 ,  G11C11/161 ,  G11C11/1659 ,  G11C11/1675

摘要： A method and system for providing a magnetic junction usable in a magnetic device are described. The magnetic junction includes a pinned layer, a plurality of nonmagnetic spacer layers, and a plurality of free layers. The free layers are interleaved with the nonmagnetic spacer layers. A first nonmagnetic spacer layer of the nonmagnetic spacer layers is between the free layers and the pinned layer. Each of the free layers is configured to be switchable between stable magnetic states when a write current is passed through the magnetic junction. Each of the free layers has a critical switching current density. The critical switching current density of one of the free layers changes monotonically from the critical switching current density of an adjacent free layer. The adjacent free layer is between the pinned layer and the one of the plurality of free layers.

摘要翻译： 描述了一种用于提供可用于磁性装置中的磁结的方法和系统。 磁结包括钉扎层，多个非磁性间隔层和多个自由层。 自由层与非磁性间隔层交错。 非磁性间隔层的第一非磁性间隔层位于自由层和被钉扎层之间。 每个自由层配置成当写入电流通过磁结时在稳定磁状态之间切换。 每个自由层具有关键的开关电流密度。 一个自由层的关键开关电流密度从相邻自由层的临界开关电流密度单调变化。 相邻的自由层在被钉扎层和多个自由层中的一个之间。

公开(公告)号：US08082657B2

公开(公告)日：2011-12-27

申请号：US12345773

申请日：2008-12-30

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

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

IPC分类号： G11B5/127 ,  H04R31/00

CPC分类号： G11B5/3163 ,  G11B5/1278 ,  G11B5/3169 ,  G11B5/3196 ,  G11B5/455 ,  Y10T29/49025 ,  Y10T29/4903 ,  Y10T29/49032 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49046 ,  Y10T29/49048

摘要： A method for manufacturing a magnetic write head that allows the location of the flare point of a write pole to be accurately located relative to the air bearing surface. The method includes the construction of a lapping guide having an edge feature that is easily and accurately located relative to the flare point of the write pole. This edge feature provides an abrupt change in electrical resistance across the lapping guide at a point when lapping should be terminated. And, since this feature can accurately located relative to the flare point, this provides an easily discernable ending point for lapping.

摘要翻译： 一种用于制造磁性写入头的方法，该方法允许将写入磁极的闪光点相对于空气轴承表面精确定位。 该方法包括构造具有相对于写入极的扩张点容易且精确地定位的边缘特征的研磨引导件。 该边缘特征提供了在研磨结束时的研磨导轨上的电阻的突然变化。 而且，由于该功能可以相对于喇叭点精确定位，因此为研磨提供了一个易于识别的终点。

公开(公告)号：US08066893B2

公开(公告)日：2011-11-29

申请号：US12343044

申请日：2008-12-23

申请人： Amanda Baer ,  Wen-Chien David Hsiao ,  John I. Kim ,  Yinshi Liu ,  Vladimir Nikitin ,  Trevor W. Olson ,  Hicham Moulay Sougrati ,  Yuan Yao

发明人： Amanda Baer ,  Wen-Chien David Hsiao ,  John I. Kim ,  Yinshi Liu ,  Vladimir Nikitin ,  Trevor W. Olson ,  Hicham Moulay Sougrati ,  Yuan Yao

IPC分类号： B44C1/22 ,  B23P15/00

CPC分类号： G11B5/3163 ,  G11B5/1278 ,  G11B5/3116

摘要： A method for manufacturing a magnetic write head having a stepped, recessed, high magnetic moment pole connected with a write pole. The stepped pole structure helps to channel magnetic flux to the write pole without leaking write field to the magnetic medium. This allows the write head to maintain a high write field strength at very small bit sizes. The method includes depositing a dielectric layer and a first CMP layer over substrate that can include a magnetic shaping layer. A mask is formed over the dielectric layer, the mask having an opening to define the stepped pole structure. The image of the mask is transferred into the dielectric layer. A high magnetic moment material is deposited and a chemical mechanical polishing is performed to planarize the magnetic material and dielectric layer.

摘要翻译： 一种用于制造具有与写入极连接的阶梯式，凹入的高磁矩极的磁性写入头的方法。 阶梯式极点结构有助于将磁通量传递到写入极，而不会将写入场泄漏到磁性介质。 这允许写头在非常小的位尺寸下保持高的写场强度。 该方法包括在可包括磁性成形层的衬底上沉积介电层和第一CMP层。 在电介质层上形成掩模，掩模具有限定阶梯极结构的开口。 掩模的图像被转移到电介质层中。 沉积高磁矩材料并执行化学机械抛光以使磁性材料和电介质层平坦化。

公开(公告)号：US07989152B2

公开(公告)日：2011-08-02

申请号：US11644927

申请日：2006-12-21

申请人： Vladimir Nikitin

发明人： Vladimir Nikitin

IPC分类号： G11B5/127

CPC分类号： G03F7/168 ,  G03F7/0043 ,  G03F7/0047 ,  Y10T29/49043

摘要： A method for a magneto-optical photoresist. The method includes applying a magneto-optical photoresist to a surface, and patterning the magneto-optical photoresist by using a magnetic alignment. The magneto-optical photoresist is also patterned by using a photo exposure, wherein the magnetic alignment provides a photo exposure alignment for the photo exposure.

摘要翻译： 一种用于磁光光刻胶的方法。 该方法包括将磁光光致抗蚀剂施加到表面，并通过使用磁性取向图案化磁光光致抗蚀剂。 磁光光致抗蚀剂也通过使用照相曝光来图案化，其中磁性对准提供用于照相曝光的照相曝光对准。

公开(公告)号：US20110141804A1

公开(公告)日：2011-06-16

申请号：US13033021

申请日：2011-02-23

申请人： Dmytro Apalkov ,  Xueti Tang ,  Vladimir Nikitin ,  Alexander A.G. Driskill-Smith ,  Steven M. Watts ,  David Druist

发明人： Dmytro Apalkov ,  Xueti Tang ,  Vladimir Nikitin ,  Alexander A.G. Driskill-Smith ,  Steven M. Watts ,  David Druist

IPC分类号： G11C11/15 ,  H01L29/82

CPC分类号： G11C11/5607 ,  G01R33/098 ,  G11C11/161 ,  G11C11/1659 ,  G11C11/1675

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 pinned layers are nonmagnetic layer-free and self-pinned. In some aspects, the magnetic junction is configured to allow the free and second pinned layers to be switched between stable magnetic states when write currents are passed therethrough. The magnetic junction has greater than two stable states. In other aspects, the magnetic junction includes at least third and fourth spacer layers, a second free layer therebetween, and a third pinned layer having a pinned layer magnetic moment, being nonmagnetic layer-free, and being coupled to the second pinned layer. The magnetic junction is configured to allow the free layers to be switched between stable magnetic states when write currents are passed therethrough.

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。 固定层是非磁性层，并且是自固定的。 在一些方面，磁结被配置为允许自由和第二被钉扎层在写入电流通过时在稳定的磁状态之间切换。 磁结有两个以上的稳定状态。 在其它方面，磁结包括至少第三和第四间隔层，在它们之间的第二自由层和具有固定层磁矩的第三被钉扎层是非磁性层，并且耦合到第二被钉扎层。 磁结被配置为允许当写入电流通过时自由层在稳定的磁状态之间切换。

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。