公开(公告)号：US07495303B2

公开(公告)日：2009-02-24

申请号：US11699160

申请日：2007-01-29

申请人： Zhitao Diao ,  Yiming Huai ,  Thierry Valet ,  Paul P. Nguyen ,  Mahendra Pakala

发明人： Zhitao Diao ,  Yiming Huai ,  Thierry Valet ,  Paul P. Nguyen ,  Mahendra Pakala

IPC分类号： G11C11/00 ,  G11C11/14 ,  G11C11/15 ,  H01L27/22

CPC分类号： H01F10/3272 ,  B82Y25/00 ,  B82Y40/00 ,  H01F10/30 ,  H01F41/302 ,  H01L43/10

摘要： A method and system include providing a single pinned layer, a free layer, and a spacer layer between the pinned and free layers. The spacer layer is nonmagnetic. The magnetic element is configured to allow the free layer to be switched due to spin transfer when a write current is passed through the magnetic element. The free layer is a simple free layer. In one aspect, the method and system include providing a spin engineered layer adjacent to the free layer. The spin engineered layer is configured to more strongly scatter majority electrons than minority electrons. In another aspect, at least one of the pinned, free, and spacer layers is a spin engineered layer having an internal spin engineered layer configured to more strongly scatter majority electrons than minority electrons. In this aspect, the magnetic element may include another pinned layer and a barrier layer between the free and pinned layers.

摘要翻译： 一种方法和系统包括在被钉扎层和自由层之间提供单个钉扎层，自由层和间隔层。 间隔层是非磁性的。 磁性元件配置成当写入电流通过磁性元件时由于自旋转移而允许自由层被切换。 自由层是一个简单的自由层。 在一个方面，该方法和系统包括提供与自由层相邻的旋转工程化层。 旋转工程层被配置为比少数电子更强烈地散射多数电子。 在另一方面，被钉扎，自由和间隔层中的至少一个是具有内部自旋工程化层的纺丝工程层，其被配置成比少数电子更强烈地散射多数电子。 在这方面，磁性元件可以包括另一被钉扎层和位于游离层和钉扎层之间的阻挡层。

公开(公告)号：US07369427B2

公开(公告)日：2008-05-06

申请号：US10938219

申请日：2004-09-09

申请人： Zhitao Diao ,  Yiming Huai ,  Thierry Valet ,  Paul P. Nguyen ,  Mahendra Pakala

发明人： Zhitao Diao ,  Yiming Huai ,  Thierry Valet ,  Paul P. Nguyen ,  Mahendra Pakala

IPC分类号： G11C11/00 ,  G11C11/14 ,  G11C11/15

CPC分类号： H01F10/3272 ,  B82Y25/00 ,  B82Y40/00 ,  H01F10/30 ,  H01F41/302 ,  H01L43/10

摘要： A method and system include providing a pinned layer, a free layer, and a spacer layer between the pinned and free layers. The spacer layer is nonmagnetic. The magnetic element is configured to allow the free layer to be switched due to spin transfer when a write current is passed through the magnetic element. In one aspect, the method and system include providing a spin engineered layer adjacent to the free layer. The spin engineered layer is configured to more strongly scatter majority electrons than minority electrons. In another aspect, at least one of the pinned, free, and spacer layers is a spin engineered layer having an internal spin engineered layer configured to more strongly scatter majority electrons than minority electrons. In this aspect, the magnetic element may include another pinned layer and a barrier layer between the free and pinned layers.

摘要翻译： 一种方法和系统包括在被钉扎层和自由层之间提供钉扎层，自由层和间隔层。 间隔层是非磁性的。 磁性元件配置成当写入电流通过磁性元件时由于自旋转移而允许自由层被切换。 在一个方面，该方法和系统包括提供与自由层相邻的旋转工程化层。 旋转工程层被配置为比少数电子更强烈地散射多数电子。 在另一方面，被钉扎，自由和间隔层中的至少一个是具有内部自旋工程化层的纺丝工程层，其被配置成比少数电子更强烈地散射多数电子。 在这方面，磁性元件可以包括另一被钉扎层和位于游离层和钉扎层之间的阻挡层。

公开(公告)号：US20070120211A1

公开(公告)日：2007-05-31

申请号：US11699160

申请日：2007-01-29

申请人： Zhitao Diao ,  Yiming Huai ,  Thierry Valet ,  Paul Nguyen ,  Mahendra Pakala

发明人： Zhitao Diao ,  Yiming Huai ,  Thierry Valet ,  Paul Nguyen ,  Mahendra Pakala

IPC分类号： H01L29/82

CPC分类号： H01F10/3272 ,  B82Y25/00 ,  B82Y40/00 ,  H01F10/30 ,  H01F41/302 ,  H01L43/10

摘要： A method and system for providing a magnetic element are described. The method and system include providing a single pinned layer, a free layer, and a spacer layer between the pinned and free layers. The spacer layer is nonmagnetic. The magnetic element is configured to allow the free layer to be switched due to spin transfer when a write current is passed through the magnetic element. The free layer is a simple free layer. In one aspect, the method and system include providing a spin engineered layer adjacent to the free layer. The spin engineered layer is configured to more strongly scatter majority electrons than minority electrons. In another aspect, at least one of the pinned, free, and spacer layers is a spin engineered layer having an internal spin engineered layer configured to more strongly scatter majority electrons than minority electrons. In this aspect, the magnetic element may include another pinned layer and a barrier layer between the free and pinned layers.

摘要翻译： 描述了一种用于提供磁性元件的方法和系统。 该方法和系统包括在被钉扎层和自由层之间提供单个钉扎层，自由层和间隔层。 间隔层是非磁性的。 磁性元件配置成当写入电流通过磁性元件时由于自旋转移而允许自由层被切换。 自由层是一个简单的自由层。 在一个方面，该方法和系统包括提供与自由层相邻的旋转工程化层。 旋转工程层被配置为比少数电子更强烈地散射多数电子。 在另一方面，被钉扎，自由和间隔层中的至少一个是具有内部自旋工程化层的纺丝工程层，其被配置成比少数电子更强烈地散射多数电子。 在这方面，磁性元件可以包括另一被钉扎层和位于游离层和钉扎层之间的阻挡层。

公开(公告)号：US20060128038A1

公开(公告)日：2006-06-15

申请号：US11294766

申请日：2005-12-05

申请人： Mahendra Pakala ,  Thierry Valet ,  Yiming Huai ,  Zhitao Diao

发明人： Mahendra Pakala ,  Thierry Valet ,  Yiming Huai ,  Zhitao Diao

IPC分类号： H01L21/00

CPC分类号： H01L43/08 ,  B82Y25/00 ,  B82Y40/00 ,  H01F10/3254 ,  H01F10/3263 ,  H01F10/3272 ,  H01F10/3281 ,  H01F41/302 ,  H01F41/325

摘要： A method and system for providing a magnetic element are disclosed. The method and system include providing a pinned layer, a free layer, and a spacer layer between the pinned layer and the free layer. The spacer layer is insulating and has an ordered crystal structure. The spacer layer is also configured to allow tunneling through the spacer layer. In one aspect, the free layer is comprised of a single magnetic layer having a particular crystal structure and texture with respect to the spacer layer. In another aspect, the free layer is comprised of two sublayers, the first sublayer having a particular crystal structure and texture with respect to the spacer layer and the second sublayer having a lower moment. In still another aspect, the method and system also include providing a second pinned layer and a second spacer layer that is nonmagnetic and resides between the free layer and the second pinned layer. The magnetic element is configured to allow the free layer to be switched due to spin transfer when a write current is passed through the magnetic element.

摘要翻译： 公开了一种用于提供磁性元件的方法和系统。 该方法和系统包括在钉扎层和自由层之间提供钉扎层，自由层和间隔层。 间隔层是绝缘的并且具有有序晶体结构。 间隔层还被构造成允许隧道穿过间隔层。 在一个方面，自由层由相对于间隔层具有特定晶体结构和纹理的单个磁性层组成。 在另一方面，自由层由两个子层组成，第一子层相对于间隔层具有特定的晶体结构和纹理，而第二子层具有较低的力矩。 在另一方面，该方法和系统还包括提供非磁性的第二被钉扎层和第二间隔层，并且位于自由层和第二钉扎层之间。 磁性元件配置成当写入电流通过磁性元件时由于自旋转移而允许自由层被切换。

公开(公告)号：US20060049472A1

公开(公告)日：2006-03-09

申请号：US10938219

申请日：2004-09-09

申请人： Zhitao Diao ,  Yiming Huai ,  Thierry Valet ,  Paul Nguyen ,  Mahendra Pakala

发明人： Zhitao Diao ,  Yiming Huai ,  Thierry Valet ,  Paul Nguyen ,  Mahendra Pakala

IPC分类号： H01L43/00 ,  H01L29/82

CPC分类号： H01F10/3272 ,  B82Y25/00 ,  B82Y40/00 ,  H01F10/30 ,  H01F41/302 ,  H01L43/10

摘要： A method and system for providing a magnetic element is disclosed. The method and system include providing a pinned layer, a free layer, and a spacer layer between the pinned and free layers. The spacer layer is nonmagnetic. The magnetic element is configured to allow the free layer to be switched due to spin transfer when a write current is passed through the magnetic element. In one aspect, the method and system include providing a spin engineered layer adjacent to the free layer. The spin engineered layer is configured to more strongly scatter majority electrons than minority electrons. In another aspect, at least one of the pinned, free, and spacer layers is a spin engineered layer having an internal spin engineered layer configured to more strongly scatter majority electrons than minority electrons. In this aspect, the magnetic element may include another pinned layer and a barrier layer between the free and pinned layers.

摘要翻译： 公开了一种用于提供磁性元件的方法和系统。 该方法和系统包括在被钉扎层和自由层之间提供钉扎层，自由层和间隔层。 间隔层是非磁性的。 磁性元件配置成当写入电流通过磁性元件时由于自旋转移而允许自由层被切换。 在一个方面，该方法和系统包括提供与自由层相邻的旋转工程化层。 旋转工程层被配置为比少数电子更强烈地散射多数电子。 在另一方面，被钉扎，自由和间隔层中的至少一个是具有内部自旋工程化层的纺丝工程层，其被配置成比少数电子更强烈地散射多数电子。 在这方面，磁性元件可以包括另一被钉扎层和位于游离层和钉扎层之间的阻挡层。

公开(公告)号：US07289356B2

公开(公告)日：2007-10-30

申请号：US11147944

申请日：2005-06-08

申请人： Zhitao Diao ,  Yiming Huai ,  Mahendra Pakala ,  Zhenghong Qian

发明人： Zhitao Diao ,  Yiming Huai ,  Mahendra Pakala ,  Zhenghong Qian

IPC分类号： G11C7/00

CPC分类号： G11C11/16

摘要： A method and system for providing a magnetic memory is described. The method and system include providing a plurality of magnetic storage cells, a plurality of word lines, and a plurality of bit lines. Each of the plurality of magnetic storage cells includes a plurality of magnetic elements and at least one selection transistor. Each of the plurality of magnetic elements is capable of being programmed using spin transfer induced switching by a write current driven through the magnetic element. Each of the plurality of magnetic elements has a first end and a second end. The at least one selection transistor is coupled to the first end of each of the plurality of magnetic elements. The plurality of word lines is coupled with the plurality of selection transistors and selectively enables a portion of the plurality of selection transistors.

摘要翻译： 描述了一种用于提供磁存储器的方法和系统。 该方法和系统包括提供多个磁存储单元，多个字线和多个位线。 多个磁存储单元中的每一个包括多个磁性元件和至少一个选择晶体管。 多个磁性元件中的每一个能够通过由磁性元件驱动的写入电流使用自旋转移感应开关来编程。 多个磁性元件中的每一个具有第一端和第二端。 所述至少一个选择晶体管耦合到所述多个磁性元件中的每一个的第一端。 多个字线与多个选择晶体管耦合，并且选择性地使能多个选择晶体管的一部分。

公开(公告)号：US07888755B2

公开(公告)日：2011-02-15

申请号：US11235384

申请日：2005-09-26

申请人： Masanori Hosomi ,  Kazuhiro Ohba ,  Hiroshi Kano ,  Yiming Huai ,  Zhitao Diao ,  Mahendra Pakala

发明人： Masanori Hosomi ,  Kazuhiro Ohba ,  Hiroshi Kano ,  Yiming Huai ,  Zhitao Diao ,  Mahendra Pakala

IPC分类号： H01L29/82 ,  G11C11/02

CPC分类号： G11C11/16

摘要： A storage element 3 has an arrangement in which magnetization fixed layers 31 and 32 are provided above and below a storage layer 17 for storing information based on the magnetization state of a magnetic material through intermediate layers 16 and 18, directions of magnetizations M15 and M19 of ferromagnetic layers 15 and 19 closest to the storage layer 17 of the magnetization fixed layers 31 and 32 above and below the storage layer 17 are opposite to each other, the two intermediate layers 16 and 18 above and below the storage layer 17 have a significant difference between sheet resistivity values thereof and in which the direction of a magnetization M1 of the storage layer 17 is changed with application of an electric current to the lamination layer direction to record information on the storage layer 17.

摘要翻译： 存储元件3具有这样的配置，其中磁化固定层31和32设置在存储层17的上方和下方，用于基于通过中间层16和18的磁性材料的磁化状态来存储信息，磁化M15和M19的方向 最靠近存储层17上方和下方的磁化固定层31和32的存储层17的铁磁层15和19彼此相对，存储层17上方和下方的两个中间层16和18具有显着差异 在其电阻率值之间，并且其中存储层17的磁化M1的方向随施加到层压层方向的电流而改变以在存储层17上记录信息。

公开(公告)号：US20060279981A1

公开(公告)日：2006-12-14

申请号：US11147944

申请日：2005-06-08

申请人： Zhitao Diao ,  Yiming Huai ,  Mahendra Pakala ,  Zhenghong Qian

发明人： Zhitao Diao ,  Yiming Huai ,  Mahendra Pakala ,  Zhenghong Qian

IPC分类号： G11C11/00

CPC分类号： G11C11/16

摘要： A method and system for providing a magnetic memory is described. The method and system include providing a plurality of magnetic storage cells, a plurality of word lines, and a plurality of bit lines. Each of the plurality of magnetic storage cells includes a plurality of magnetic elements and at least one selection transistor. Each of the plurality of magnetic elements is capable of being programmed using spin transfer induced switching by a write current driven through the magnetic element. Each of the plurality of magnetic elements has a first end and a second end. The at least one selection transistor is coupled to the first end of each of the plurality of magnetic elements. The plurality of word lines is coupled with the plurality of selection transistors and selectively enables a portion of the plurality of selection transistors.

摘要翻译： 描述了一种用于提供磁存储器的方法和系统。 该方法和系统包括提供多个磁存储单元，多个字线和多个位线。 多个磁存储单元中的每一个包括多个磁性元件和至少一个选择晶体管。 多个磁性元件中的每一个能够通过由磁性元件驱动的写入电流使用自旋转移感应开关来编程。 多个磁性元件中的每一个具有第一端和第二端。 所述至少一个选择晶体管耦合到所述多个磁性元件中的每一个的第一端。 多个字线与多个选择晶体管耦合，并且选择性地使能多个选择晶体管的一部分。

公开(公告)号：US07242045B2

公开(公告)日：2007-07-10

申请号：US10783416

申请日：2004-02-19

申请人： Paul P. Nguyen ,  Yiming Huai ,  Zhitao Diao ,  Frank Albert

发明人： Paul P. Nguyen ,  Yiming Huai ,  Zhitao Diao ,  Frank Albert

IPC分类号： H01L29/76

CPC分类号： H01L43/10 ,  B82Y25/00 ,  B82Y40/00 ,  G11C11/161 ,  H01F10/16 ,  H01F10/3263 ,  H01F10/3272 ,  H01F41/303

摘要： A method and system for providing a magnetic element that can be used in a magnetic memory is disclosed. The magnetic element includes pinned, nonmagnetic spacer, and free layers. The spacer layer resides between the pinned and free layers. The free layer can be switched using spin transfer when a write current is passed through the magnetic element. The magnetic element may also include a barrier layer, a second pinned layer. Alternatively, second pinned and second spacer layers and a second free layer magnetostatically coupled to the free layer are included. In one aspect, the free layer(s) include ferromagnetic material(s) diluted with nonmagnetic material(s) and/or ferrimagnetically doped to provide low saturation magnetization(s).

摘要翻译： 公开了一种用于提供可用于磁存储器中的磁性元件的方法和系统。 磁性元件包括固定，非磁性间隔物和自由层。 间隔层位于固定层和自由层之间。 当写入电流通过磁性元件时，可以使用自旋转移来切换自由层。 磁性元件还可以包括阻挡层，第二被钉扎层。 或者，包括第二固定和第二间隔层和静电耦合到自由层的第二自由层。 在一个方面，自由层包括用非磁性材料稀释的铁磁材料和/或亚铁磁掺杂以提供低的饱和磁化强度。

公开(公告)号：US07916433B2

公开(公告)日：2011-03-29

申请号：US12816108

申请日：2010-06-15

申请人： Yiming Huai ,  Zhitao Diao ,  Eugene Youjun Chen

发明人： Yiming Huai ,  Zhitao Diao ,  Eugene Youjun Chen

IPC分类号： G11B5/127 ,  G11C11/14

CPC分类号： G11B5/3909 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3906 ,  G11C11/161 ,  H01L43/10 ,  Y10T428/115

摘要： A method and system for providing a magnetic element are described. The method and system include providing a pinned layer, a barrier layer, and a free layer. The free layer includes a first ferromagnetic layer, a second ferromagnetic layer, and an intermediate layer between the first ferromagnetic layer and the second ferromagnetic layer. The barrier layer resides between the pinned layer and the free layer and includes MgO. The first ferromagnetic layer resides between the barrier layer and the intermediate layer. The first ferromagnetic layer includes at least one of CoFeX and CoNiFeX, with X being selected from the group of B, P, Si, Nb, Zr, Hf, Ta, Ti, and being greater than zero atomic percent and not more than thirty atomic percent. The first ferromagnetic layer is ferromagnetically coupled with the second ferromagnetic layer. The intermediate layer is configured such that the first ferromagnetic layer has a first crystalline orientation and the second ferromagnetic layer has a second crystalline orientation different from the first ferromagnetic layer.

摘要翻译： 描述了一种用于提供磁性元件的方法和系统。 该方法和系统包括提供钉扎层，阻挡层和自由层。 自由层包括第一铁磁层，第二铁磁层和第一铁磁层与第二铁磁层之间的中间层。 阻挡层位于被钉扎层和自由层之间，并且包括MgO。 第一铁磁层位于阻挡层和中间层之间。 第一铁磁层包括CoFeX和CoNiFeX中的至少一种，其中X选自B，P，Si，Nb，Zr，Hf，Ta，Ti，并且大于零原子百分比且不超过三十个原子 百分。 第一铁磁层与第二铁磁层铁磁耦合。 中间层被配置为使得第一铁磁层具有第一结晶取向，而第二铁磁层具有不同于第一铁磁层的第二晶体取向。