公开(公告)号：US20100033872A1

公开(公告)日：2010-02-11

申请号：US12496505

申请日：2009-07-01

申请人： Haiwen Xi ,  Kaizhong Gao ,  Song S. Xue

发明人： Haiwen Xi ,  Kaizhong Gao ,  Song S. Xue

IPC分类号： G11B5/82 ,  B05D5/12

CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/746 ,  G11B5/855

摘要： A bit patterned media (BPM) includes many magnetic dots arranged in tracks on a substrate. The magnetic dots each have a hard magnetic core, a soft magnetic cladding surrounding the core and a thin non-magnetic layer that separates the hard magnetic core from the soft magnetic ring. The soft magnetic cladding stabilizes the magnetization at the edges of the hard magnetic core to improve the signal to noise ratio of the magnetic dots. The soft magnetic rings also narrow the magnetic field of the dots which reduces the space requirements and allows more dots to be placed on the substrate.

摘要翻译： 位图案介质（BPM）包括布置在基板上的轨道中的许多磁点。 磁点各自具有硬磁芯，围绕芯的软磁性包层以及将硬磁芯与软磁环分离的薄的非磁性层。 软磁性包层使硬磁芯的边缘处的磁化稳定，以提高磁点的信噪比。 软磁环还使点的磁场变窄，这减小了空间要求，并允许更多的点放置在基板上。

公开(公告)号：US20090185315A1

公开(公告)日：2009-07-23

申请号：US12017822

申请日：2008-01-22

申请人： Song S. Xue ,  Zheng Gao ,  Shaoping Li ,  Kaizhong Gao ,  Dimitar V. Dimitrov ,  Konstantin Nikolaev ,  Patrick J. Ryan

发明人： Song S. Xue ,  Zheng Gao ,  Shaoping Li ,  Kaizhong Gao ,  Dimitar V. Dimitrov ,  Konstantin Nikolaev ,  Patrick J. Ryan

IPC分类号： G11B5/33

CPC分类号： G11B5/3909 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3906 ,  G11B2005/3996

摘要： A magnetic sensor includes a reference layer having a first magnetization direction and a free layer assembly having an effective magnetization direction substantially perpendicular to the first magnetization direction and substantially perpendicular to a plane of each layer of the free layer assembly. A spacer layer is between the reference layer and the free layer, and a signal enhancement layer is exchange coupled to the free layer assembly on a side opposite the spacer layer.

摘要翻译： 磁传感器包括具有第一磁化方向的参考层和具有基本上垂直于第一磁化方向并且基本上垂直于自由层组件的每个层的平面的有效磁化方向的自由层组件。 间隔层位于参考层和自由层之间，信号增强层与隔离层相对的一侧交换耦合到自由层组件。

公开(公告)号：US07436632B2

公开(公告)日：2008-10-14

申请号：US10880879

申请日：2004-06-30

申请人： Shaoping Li ,  Song Xue ,  Kaizhong Gao ,  Patrick Ryan

发明人： Shaoping Li ,  Song Xue ,  Kaizhong Gao ,  Patrick Ryan

IPC分类号： G11B5/39

CPC分类号： G11B5/265 ,  G11B5/127 ,  G11B5/3954 ,  G11B5/3974

摘要： A magnetic sensor for reading information from a magnetic medium. The magnetic sensor includes a bottom electrode and a first sensor disposed above the bottom electrode. The magnetic sensor also includes a middle electrode disposed above the first sensor, a second sensor disposed above the middle electrode and a top electrode disposed above the second sensor. The bottom electrode, the middle electrode and the top electrode are utilized to electrically connect the first sensor and the second sensor in parallel.

摘要翻译： 一种用于从磁性介质读取信息的磁传感器。 磁传感器包括底电极和设置在底电极上方的第一传感器。 磁传感器还包括设置在第一传感器上方的中间电极，设置在中间电极上方的第二传感器和设置在第二传感器上方的顶部电极。 底部电极，中间电极和顶部电极用于并联地电连接第一传感器和第二传感器。

公开(公告)号：US20080225584A1

公开(公告)日：2008-09-18

申请号：US11724740

申请日：2007-03-16

申请人： Kaizhong Gao ,  Haiwen Xi ,  Yiming Shi ,  Song S. Xue ,  Sining Mao

发明人： Kaizhong Gao ,  Haiwen Xi ,  Yiming Shi ,  Song S. Xue ,  Sining Mao

IPC分类号： G11C11/15

CPC分类号： G11C11/1675 ,  G11C11/161 ,  G11C11/1659 ,  G11C11/1673

摘要： The present invention relates to a memory cell including a first reference layer having a first magnetization with a first magnetization direction and a second reference layer having a second magnetization with a second magnetization direction substantially perpendicular to the first magnetization direction. A storage layer is disposed between the first reference layer and second reference layer and has a third magnetization direction about 45° from the first magnetization direction and about 135° from the second magnetization direction when the memory cell is in a first data state, and a fourth magnetization direction opposite the third magnetization direction when the memory cell is in a second data state.

摘要翻译： 本发明涉及包括具有第一磁化方向的第一磁化的第一参考层和具有基本上垂直于第一磁化方向的第二磁化方向的第二磁化的第二参考层的存储单元。 存储层设置在第一参考层和第二参考层之间，并且当存储单元处于第一数据状态时，具有从第一磁化方向大约45°的第三磁化方向和从第二磁化方向开始的大约135°的存储层， 当存储单元处于第二数据状态时与第三磁化方向相反的第四磁化方向。

公开(公告)号：US20080137224A1

公开(公告)日：2008-06-12

申请号：US11634767

申请日：2006-12-06

申请人： Kaizhong Gao ,  Haiwen Xi ,  Yiming Shi ,  Sining Mao ,  Patrick J. Ryan ,  Song S. Xue ,  Shaoping Li

发明人： Kaizhong Gao ,  Haiwen Xi ,  Yiming Shi ,  Sining Mao ,  Patrick J. Ryan ,  Song S. Xue ,  Shaoping Li

IPC分类号： G11B5/02

CPC分类号： G11B5/1278 ,  G11B2005/001

摘要： A magnetic writer includes a write element and an oscillation device disposed adjacent to the write element. The first oscillation device includes a first magnetic layer, a second magnetic layer having a magnetization vector including a component perpendicular to a major plane of the first magnetic layer. The first nonmagnetic layer disposed between the first magnetic layer and the second magnetic layer. The first oscillation device generates a high-frequency oscillation field when a current is directed perpendicular to the major plane of the first magnetic layer.

摘要翻译： 磁性写入器包括写入元件和邻近写入元件设置的振荡器件。 第一振荡装置包括第一磁性层，具有包括垂直于第一磁性层的主平面的分量的磁化矢量的第二磁性层。 设置在第一磁性层和第二磁性层之间的第一非磁性层。 当电流垂直于第一磁性层的主平面时，第一振荡装置产生高频振荡场。

公开(公告)号：US07359161B2

公开(公告)日：2008-04-15

申请号：US10880705

申请日：2004-06-30

申请人： Shaoping Li ,  Song Xue ,  Kaizhong Gao ,  Michael R. Montemorra ,  Patrick Ryan

发明人： Shaoping Li ,  Song Xue ,  Kaizhong Gao ,  Michael R. Montemorra ,  Patrick Ryan

IPC分类号： G11B5/39

CPC分类号： G11B5/3903 ,  G11B2005/0005

摘要： A magnetic sensor is provided. The magnetic sensor includes a magnetoresistive multi-layered portion that has a first resistance region and a second resistance region. At least two contacts are coupled to the magnetoresistive multi-layered portion. A sensing current flows from a first contact of the at least two contacts to a second contact of the at least two contacts via the first resistance region and the second resistance region of the magnetoresistive multi-layered portion. The first resistance region promotes a primary flow of the sensing current in a first direction substantially perpendicular to surface planes of the layers of the magnetoresistive multi-layered portion, and the second resistance region promotes the primary flow of the sensing current in a second direction substantially in parallel to surface planes of the layers of the magnetoresistive multi-layered portion.

摘要翻译： 提供磁传感器。 磁传感器包括具有第一电阻区域和第二电阻区域的磁阻多层部分。 至少两个触点耦合到磁阻多层部分。 感测电流从至少两个触点的第一触点经由第一电阻区域和磁阻多层部分的第二电阻区域流过至少两个触点的第二触点。 所述第一阻抗区域促进所述感测电流在与所述磁阻多层部分的所述层的表面平行的第一方向上的主要流动，并且所述第二电阻区域基本上促进所述感测电流在第二方向上的初级流动 平行于磁阻多层部分的层的表面平面。

公开(公告)号：US20070211362A1

公开(公告)日：2007-09-13

申请号：US11373742

申请日：2006-03-10

申请人： Shaoping Li ,  Insik Jin ,  Kaizhong Gao ,  Song Xue ,  Mike Montemorra ,  Housan Dakroub ,  Jason Jury

发明人： Shaoping Li ,  Insik Jin ,  Kaizhong Gao ,  Song Xue ,  Mike Montemorra ,  Housan Dakroub ,  Jason Jury

IPC分类号： G11B20/10

CPC分类号： G11B20/14 ,  G11B5/17 ,  G11B5/3906 ,  G11B20/10009 ,  G11B20/10037 ,  G11B20/10194 ,  G11B2005/0008 ,  G11B2220/2516

摘要： A readback system includes a magnetic sensor that receives a sensor current. The magnetic sensor senses magnetic bits at a bit frequency and generates a sensor output. The readback system includes a channel circuit that modulates the sensor current at a modulation frequency higher than the bit frequency. The channel circuit samples the sensor output and combines multiple samples of the sensor output per magnetic bit into a combined sample output.

摘要翻译： 回读系统包括接收传感器电流的磁传感器。 磁传感器以位频率感测磁位，并产生传感器输出。 回读系统包括一个通道电路，该通道电路以高于位频率的调制频率调制传感器电流。 通道电路对传感器输出进行采样，并将每个磁性位的传感器输出的多个样本合并成一个组合的采样输出。

公开(公告)号：US20060002034A1

公开(公告)日：2006-01-05

申请号：US10880705

申请日：2004-06-30

申请人： Shaoping Li ,  Song Xue ,  Kaizhong Gao ,  Michael Montemorra ,  Patrick Ryan

发明人： Shaoping Li ,  Song Xue ,  Kaizhong Gao ,  Michael Montemorra ,  Patrick Ryan

IPC分类号： G11B5/33 ,  G11B5/127

CPC分类号： G11B5/3903 ,  G11B2005/0005

摘要： A magnetic sensor is provided. The magnetic sensor includes a magnetoresistive multi-layered portion that has a first resistance region and a second resistance region. At least two contacts are coupled to the magnetoresistive multi-layered portion. A sensing current flows from a first contact of the at least two contacts to a second contact of the at least two contacts via the first resistance region and the second resistance region of the magnetoresistive multi-layered portion. The first resistance region promotes a primary flow of the sensing current in a first direction substantially perpendicular to surface planes of the layers of the magnetoresistive multi-layered portion, and the second resistance region promotes the primary flow of the sensing current in a second direction substantially in parallel to surface planes of the layers of the magnetoresistive multi-layered portion.

摘要翻译： 提供磁传感器。 磁传感器包括具有第一电阻区域和第二电阻区域的磁阻多层部分。 至少两个触点耦合到磁阻多层部分。 感测电流从至少两个触点的第一触点经由第一电阻区域和磁阻多层部分的第二电阻区域流过至少两个触点的第二触点。 所述第一阻抗区域促进所述感测电流在与所述磁阻多层部分的所述层的表面平行的第一方向上的主要流动，并且所述第二电阻区域基本上促进所述感测电流在第二方向上的初级流动 平行于磁阻多层部分的层的表面平面。

公开(公告)号：US08792311B2

公开(公告)日：2014-07-29

申请号：US13023198

申请日：2011-02-08

申请人： Xuan Zheng ,  Timothy William Stoebe ,  Jorge Hanchi ,  Kaizhong Gao

发明人： Xuan Zheng ,  Timothy William Stoebe ,  Jorge Hanchi ,  Kaizhong Gao

IPC分类号： G11B11/00

CPC分类号： G11B5/607 ,  G11B5/6076 ,  G11B5/6088 ,  G11B2005/0021

摘要： Changes in the thermal boundary condition near a close point of an ABS to a media indicate proximity of the ABS with the media. Before contact, heat conduction from the ABS is primarily through convective and/or ballistic heat transfer to air between the ABS and the media. After contact, heat flux primarily flows from the ABS to the media through solid-solid conductive contact. Further, a light source within a HAMR transducer head may create additional thermal variations within the transducer head. These thermal variations create temperature variations within the transducer head. Two resistance temperature sensors on the transducer head at varying distances from the close point and/or light source measure these temperature variations. A temperature difference between the two resistance temperature sensors indicates proximity of the close point to the media and/or light output.

摘要翻译： ABS附近接近介质的热边界条件的变化指示ABS与介质的接近。 在接触之前，ABS的热传导主要是通过ABS和介质之间的空气对流和/或弹道传热。 接触后，热通量主要通过固体导电接触从ABS流动到介质。 此外，HAMR换能器头内的光源可能在换能器头内产生额外的热变化。 这些热变化会导致传感器头内的温度变化。 传感器头上距离近点和/或光源不同距离的两个电阻温度传感器可测量这些温度变化。 两个电阻温度传感器之间的温差指示接近于介质和/或光输出的接近点。

公开(公告)号：US08766382B2

公开(公告)日：2014-07-01

申请号：US13015320

申请日：2011-01-27

申请人： Haiwen Xi ,  Kaizhong Gao ,  Dimitar V. Dimitrov ,  Song S. Xue

发明人： Haiwen Xi ,  Kaizhong Gao ,  Dimitar V. Dimitrov ,  Song S. Xue

IPC分类号： H01L29/82 ,  H01L43/08 ,  G11C11/16

CPC分类号： H01L43/08 ,  G11C11/16 ,  G11C11/1675 ,  Y10T428/1114 ,  Y10T428/1121

摘要： A free ferromagnetic data storage layer of an MRAM cell is coupled to a free ferromagnetic stabilization layer, which stabilization layer is directly electrically coupled to a contact electrode, on one side, and is separated from the free ferromagnetic data storage layer, on an opposite side, by a spacer layer. The spacer layer provides for the coupling between the two free layers, which coupling is one of: a ferromagnetic coupling and an antiferromagnetic coupling.

摘要翻译： MRAM单元的自由铁磁数据存储层耦合到自由铁磁稳定层，该稳定层在一侧直接电耦合到接触电极，并在相对侧与自由铁磁数据存储层分离 ，通过间隔层。 间隔层提供两个自由层之间的耦合，该耦合是以下之一：铁磁耦合和反铁磁耦合。