公开(公告)号：US08405931B2

公开(公告)日：2013-03-26

申请号：US12491898

申请日：2009-06-25

申请人： Mark T. Kief ,  Kaizhong Gao ,  Venkateswara Rao Inturi

发明人： Mark T. Kief ,  Kaizhong Gao ,  Venkateswara Rao Inturi

IPC分类号： G11B5/147

CPC分类号： G11B5/3116 ,  C23C14/14 ,  C23C14/225 ,  C25D5/022 ,  C25D5/12 ,  C25D5/14 ,  C25D7/001 ,  G11B5/1278 ,  G11B5/3163

摘要： A magnetic writer includes a write pole configured such that the easy magnetic axis is parallel to the vertical length direction of the write pole tip and to the ABS of the recording media. The write pole tip can be a multilayer structure comprising alternating magnetic and nonmagnetic layers with a planar orientation substantially perpendicular to the ABS and with magnetic anisotropy parallel to the vertical length direction of the write pole tip. The alternating magnetic and nonmagnetic layers may be formed by electroplating on a conformal seedlayer in a trench, or by static off axis physical vapor deposition.

摘要翻译： 磁性写入器包括写极，其被构造为使得易磁轴与记录介质的写极端和ABS的垂直长度方向平行。 写极端可以是包括交替磁性和非磁性层的多层结构，其平面取向基本上垂直于ABS并且具有平行于写入极尖的垂直长度方向的磁各向异性。 交替的磁性和非磁性层可以通过电镀在沟槽中的保形晶种层上，或通过静态离轴物理气相沉积形成。

公开(公告)号：US08339736B2

公开(公告)日：2012-12-25

申请号：US11820703

申请日：2007-06-20

申请人： Kaizhong Gao ,  Sining Mao ,  Eric S. Linville ,  Xuebing Feng ,  Shaoping Li ,  Steven Paul Bozeman

发明人： Kaizhong Gao ,  Sining Mao ,  Eric S. Linville ,  Xuebing Feng ,  Shaoping Li ,  Steven Paul Bozeman

IPC分类号： G11B5/17

CPC分类号： G11B5/1278 ,  G11B5/02 ,  G11B5/3123 ,  G11B5/3133 ,  G11B2005/0002

摘要： A magnetic device includes a write element having a write element tip and a conductive coil that carries current to induce a first field in the write element. A first conductor is proximate a leading edge of the write pole tip for carrying current to generate a second field that augments the first field.

摘要翻译： 磁性装置包括具有写入元件尖端的写元件和承载电流以在写入元件中引起第一场的导电线圈。 第一导体靠近写极尖的前缘，用于承载电流以产生增大第一场的第二场。

公开(公告)号：US08339735B2

公开(公告)日：2012-12-25

申请号：US11823917

申请日：2007-06-29

申请人： Michael L. Mallary ,  Ching He ,  Kaizhong Gao

发明人： Michael L. Mallary ,  Ching He ,  Kaizhong Gao

IPC分类号： G11B5/187 ,  G11B5/127

CPC分类号： G11B5/127 ,  B82Y10/00 ,  G11B5/11 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/743 ,  G11B5/82

摘要： A magnetic writer writes to a magnetic medium including a plurality of tracks that each includes a plurality of isolated magnetic elements for storage of information. The magnetic writer includes a write element having a write element tip having a leading edge, a trailing edge, and first and second side edges extending between the leading edge and the trailing edge. A side shield is proximate the first side edge and no shield is proximate the second side edge.

摘要翻译： 磁写入器写入包括多个轨道的磁介质，每个磁道包括用于存储信息的多个隔离的磁性元件。 磁性写入器包括具有写入元件尖端的写入元件，该写入元件尖端具有前缘，后缘以及在前边缘和后边缘之间延伸的第一和第二侧边缘。 侧护板靠近第一侧边缘，并且没有屏蔽件靠近第二侧边缘。

公开(公告)号：US20120314549A1

公开(公告)日：2012-12-13

申请号：US13590214

申请日：2012-08-21

申请人： Lien Lee ,  Xuhui Jin ,  Kaizhong Gao ,  Amit Vasant Itagi ,  William Albert Challener

发明人： Lien Lee ,  Xuhui Jin ,  Kaizhong Gao ,  Amit Vasant Itagi ,  William Albert Challener

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/4866 ,  G11B5/6088 ,  G11B7/122 ,  G11B7/1384 ,  G11B7/1387 ,  G11B11/10536 ,  G11B2005/0005 ,  G11B2005/0021 ,  Y10T428/11 ,  Y10T428/1171 ,  Y10T428/1193

摘要： An apparatus includes a waveguide shaped to direct light to a focal point, and a near-field transducer positioned adjacent to the focal point, wherein the near-field transducer includes a dielectric component and a metallic component positioned adjacent to at least a portion of the dielectric component. An apparatus includes a waveguide shaped to direct light to a focal point, and a near-field transducer positioned adjacent to the focal point, wherein the near-field transducer includes a first metallic component, a first dielectric layer positioned adjacent to at least a portion of the first metallic component, and a second metallic component positioned adjacent to at least a portion of the first dielectric component.

摘要翻译： 一种装置包括成形为将光引导到焦点的波导和邻近焦点定位的近场换能器，其中近场换能器包括介电部件和金属部件，该金属部件邻近至少一部分 介电元件。 一种装置包括成形为将光引导到焦点的波导和邻近焦点定位的近场换能器，其中近场换能器包括第一金属部件，第一介电层位于与至少一部分 的第一金属部件和与第一介电部件的至少一部分相邻定位的第二金属部件。

公开(公告)号：US08248891B2

公开(公告)日：2012-08-21

申请号：US12272984

申请日：2008-11-18

申请人： Lien Lee ,  Xuhui Jin ,  Kaizhong Gao ,  Amit Vasant Itagi ,  William Albert Challener

发明人： Lien Lee ,  Xuhui Jin ,  Kaizhong Gao ,  Amit Vasant Itagi ,  William Albert Challener

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/4866 ,  G11B5/6088 ,  G11B7/122 ,  G11B7/1384 ,  G11B7/1387 ,  G11B11/10536 ,  G11B2005/0005 ,  G11B2005/0021 ,  Y10T428/11 ,  Y10T428/1171 ,  Y10T428/1193

摘要： An apparatus includes a waveguide shaped to direct light to a focal point, and a near-field transducer positioned adjacent to the focal point, wherein the near-field transducer includes a dielectric component and a metallic component positioned adjacent to at least a portion of the dielectric component. An apparatus includes a waveguide shaped to direct light to a focal point, and a near-field transducer positioned adjacent to the focal point, wherein the near-field transducer includes a first metallic component, a first dielectric layer positioned adjacent to at least a portion of the first metallic component, and a second metallic component positioned adjacent to at least a portion of the first dielectric component.

摘要翻译： 一种装置包括成形为将光引导到焦点的波导和邻近焦点定位的近场换能器，其中近场换能器包括介电部件和金属部件，该金属部件邻近至少一部分 介电元件。 一种装置包括成形为将光引导到焦点的波导和邻近焦点定位的近场换能器，其中近场换能器包括第一金属部件，第一介电层位于与至少一部分 的第一金属部件和与第一介电部件的至少一部分相邻定位的第二金属部件。

公开(公告)号：US08238062B2

公开(公告)日：2012-08-07

申请号：US12491838

申请日：2009-06-25

申请人： Yonghua Chen ,  Jiaoming Qiu ,  Xilin Peng ,  Kaizhong Gao

发明人： Yonghua Chen ,  Jiaoming Qiu ,  Xilin Peng ,  Kaizhong Gao

IPC分类号： G11B5/39

CPC分类号： G01R33/098 ,  G11B5/3912 ,  G11B5/3916 ,  G11B5/398 ,  H01L43/08

摘要： In some embodiments, a magnetic reader comprises first and second shields extending from an air bearing surface (ABS), a magnetoresistive stack is located between the first and second shields, and a flux guide is separated from the magnetoresistive stack while connecting the first and second shields. The flux guide magnetically couples the distal end of the magnetoresistive stack to the first shield.

摘要翻译： 在一些实施例中，磁读取器包括从空气轴承表面（ABS）延伸的第一和第二屏蔽，磁阻堆叠位于第一和第二屏蔽之间，并且磁通引导件与磁阻堆叠分离，同时连接第一和第二屏蔽 盾牌 磁通引导件将磁阻堆叠的远端磁耦合到第一屏蔽层。

公开(公告)号：US08203192B2

公开(公告)日：2012-06-19

申请号：US13086613

申请日：2011-04-14

申请人： Kaizhong Gao ,  Haiwen Xi ,  Wenzhong Zhu ,  Olle Heinonen

发明人： Kaizhong Gao ,  Haiwen Xi ,  Wenzhong Zhu ,  Olle Heinonen

IPC分类号： H01L21/66 ,  G01R33/02 ,  G11C11/14

CPC分类号： G01R33/093 ,  B82Y25/00 ,  G01R33/1284 ,  G11C11/161 ,  G11C11/1675

摘要： Spin-transfer torque memory having a compensation element is disclosed. A spin-transfer torque memory unit includes a free magnetic layer having a magnetic easy axis and a magnetization orientation that can change direction due to spin-torque transfer when a write current passes through the spin-transfer torque memory unit; a reference magnetic element having a magnetization orientation that is pinned in a reference direction; an electrically insulating and non-magnetic tunneling barrier layer separating the free magnetic layer from the magnetic reference element; and a compensation element adjacent to the free magnetic layer. The compensation element applies a bias field on the magnetization orientation of the free magnetic layer. The bias field is formed of a first vector component parallel to the easy axis of the free magnetic layer and a second vector component orthogonal to the easy axis of the free magnetic layer. The bias field reduces a write current magnitude required to switch the direction of the magnetization orientation of the free magnetic layer.

摘要翻译： 公开了具有补偿元件的自旋转矩存储器。 自旋转移力矩存储单元包括具有磁性容易轴的自由磁性层和当写入电流通过自旋转移转矩存储单元时由于自旋转矩传递而改变方向的磁化取向; 具有被固定在参考方向上的磁化取向的参考磁性元件; 将自由磁性层与磁性参考元件分离的电绝缘和非磁性隧道势垒层; 以及与自由磁性层相邻的补偿元件。 补偿元件对自由磁性层的磁化取向施加偏置场。 偏置场由平行于自由磁性层的容易轴的第一矢量分量和与自由磁性层的容易轴正交的第二矢量分量形成。 偏置场减小了切换自由磁性层的磁化取向方向所需的写入电流幅度。

公开(公告)号：US20120111952A1

公开(公告)日：2012-05-10

申请号：US12939751

申请日：2010-11-04

申请人： Xin Cao ,  Haiwen Xi ,  Wenzhong Zhu ,  Robert Lamberton ,  Kaizhong Gao

发明人： Xin Cao ,  Haiwen Xi ,  Wenzhong Zhu ,  Robert Lamberton ,  Kaizhong Gao

IPC分类号： G11C11/16 ,  G11C11/15 ,  G06K19/073

CPC分类号： G11C11/16 ,  G11C11/1659 ,  G11C11/1675

摘要： Method and apparatus for writing data to a magnetic memory element, such as a spin-torque transfer random access memory (STRAM) memory cell. In accordance with various embodiments, a write current is applied through a magnetic memory element to initiate magnetic precession of the element to a desired magnetic state. A flow of a field assist current is subsequently initiated adjacent the magnetic memory element during continued application of the write current to induce a magnetic field upon the element. The field assist current persists after the write current is terminated to provide field assisted precession to the desired magnetic state.

摘要翻译： 将数据写入诸如自旋转矩传递随机存取存储器（STRAM）存储单元之类的磁存储元件的方法和装置。 根据各种实施例，通过磁存储元件施加写入电流以启动元件的磁性进动到期望的磁状态。 随后在继续施加写入电流以引起元件上的磁场的同时在磁存储元件附近开始场辅助电流。 在写入电流终止之后，场辅助电流保持不变，以提供场辅助进动到期望的磁状态。

公开(公告)号：US20120039115A1

公开(公告)日：2012-02-16

申请号：US13278247

申请日：2011-10-21

申请人： Yuankai Zheng ,  Dimitar V. Dimitrov ,  Dexin Wang ,  Haiwen Xi ,  Kaizhong Gao ,  Olle Heinonen ,  Wenzhong Zhu

发明人： Yuankai Zheng ,  Dimitar V. Dimitrov ,  Dexin Wang ,  Haiwen Xi ,  Kaizhong Gao ,  Olle Heinonen ,  Wenzhong Zhu

IPC分类号： G11C11/16

CPC分类号： G11C11/1675 ,  B82Y10/00 ,  B82Y25/00 ,  G11C11/16 ,  G11C11/161 ,  H01F10/3254 ,  H01F10/3268 ,  H01F10/3286 ,  H01F10/329 ,  H01L43/08

摘要： Spin-transfer torque memory includes a composite free magnetic element, a reference magnetic element having a magnetization orientation that is pinned in a reference direction, and an electrically insulating and non-magnetic tunneling barrier layer separating the composite free magnetic element from the magnetic reference element. The free magnetic element includes a hard magnetic layer exchanged coupled to a soft magnetic layer. The composite free magnetic element has a magnetization orientation that can change direction due to spin-torque transfer when a write current passes through the spin-transfer torque memory unit.

摘要翻译： 自旋转矩存储器包括复合自由磁性元件，具有沿参考方向固定的磁化取向的参考磁性元件以及将复合自由磁性元件与磁性参考元件分离的电绝缘和非磁性隧道势垒层 。 自由磁性元件包括与软磁性层交换的硬磁性层。 复合自由磁性元件具有当写入电流通过自旋转移转矩存储单元时由于自旋转矩传递而改变方向的磁化取向。

公开(公告)号：US20110286127A1

公开(公告)日：2011-11-24

申请号：US12785003

申请日：2010-05-21

申请人： Kaizhong Gao ,  Yongjun Zhao ,  William A. Challener ,  Xuhui Jin

发明人： Kaizhong Gao ,  Yongjun Zhao ,  William A. Challener ,  Xuhui Jin

IPC分类号： G11B5/02

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/001 ,  G11B2005/0021

摘要： A magnetic recording head consists of a write pole and a near field transducer close to the write pole that focuses light energy to a focal point. A near field transducer is positioned to receive light energy from a waveguide. The near field transducer comprises an energy-receiving end and an energy-radiating end. The energy-receiving end is located near the focal point of the waveguide and the energy-radiating end is shaped such that it is narrower closer to the write pole and wider farther from the write pole.

摘要翻译： 磁记录头由靠近写入极的写极和近场传感器组成，将光能聚焦到焦点。 定位近场传感器以从波导接收光能。 近场换能器包括能量接收端和能量辐射端。 能量接收端位于波导的焦点附近，并且能量辐射端被成形为使得其更靠近写入极并且比写入极更远。