公开(公告)号：US20140008742A1

公开(公告)日：2014-01-09

申请号：US13491568

申请日：2012-06-07

申请人： Eugene Youjun Chen ,  Xueti Tang

发明人： Eugene Youjun Chen ,  Xueti Tang

IPC分类号： H01L43/10

CPC分类号： H01L43/10 ,  B82Y25/00 ,  B82Y40/00 ,  G01R33/098 ,  G11C11/161 ,  H01F10/3254 ,  H01F10/3286 ,  H01F41/307 ,  H01F41/34 ,  H01L27/228 ,  H01L43/08

摘要： In one embodiment, a magnetic element for a semiconductor device includes a reference layer, a free layer, and a nonmagnetic spacer layer disposed between the reference layer and the free layer. The nonmagnetic spacer layer includes a binary, ternary, or multi-nary alloy oxide material. The binary, ternary, or multi-nary alloy oxide material includes MgO having one or more additional elements selected from the group consisting of: Ru, Al, Ta, Tb, Cu, V, Hf, Zr, W, Ag, Au, Fe, Co, Ni, Nb, Cr, Mo, and Rh.

摘要翻译： 在一个实施例中，用于半导体器件的磁性元件包括设置在参考层和自由层之间的参考层，自由层和非磁性间隔层。 非磁性间隔层包括二元，三元或多元合金氧化物材料。 二元，三元或多元合金氧化物材料包括具有选自Ru，Al，Ta，Tb，Cu，V，Hf，Zr，W，Ag，Au，Fe中的一种或多种另外的元素的MgO ，Co，Ni，Nb，Cr，Mo和Rh。

公开(公告)号：US08456898B2

公开(公告)日：2013-06-04

申请号：US13311308

申请日：2011-12-05

申请人： Eugene Youjun Chen ,  Shengyuan Wang

发明人： Eugene Youjun Chen ,  Shengyuan Wang

IPC分类号： G11B5/39 ,  H01F10/32 ,  G11C11/15 ,  G11B5/127 ,  H01L43/08 ,  H01L43/12

CPC分类号： H01F10/324 ,  B82Y25/00 ,  G11B5/1278 ,  G11B5/39 ,  G11C11/15 ,  G11C11/161 ,  H01F10/3254 ,  H01F10/3268 ,  H01F10/3286 ,  H01L27/228 ,  H01L43/08 ,  H01L43/10 ,  H01L43/12 ,  Y10T428/1121 ,  Y10T428/1143

摘要： Techniques and magnetic devices associated with a magnetic element that includes a fixed layer having a fixed layer magnetization and perpendicular anisotropy, a nonmagnetic spacer layer, and a free layer having a changeable free layer magnetization and perpendicular anisotropy.

摘要翻译： 与包括具有固定层磁化和垂直各向异性的固定层的磁性元件相关联的技术和磁性装置，非磁性间隔层和具有可变自由层磁化和垂直各向异性的自由层。

公开(公告)号：US20100247967A1

公开(公告)日：2010-09-30

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： G11B5/33

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。

公开(公告)号：US07791931B2

公开(公告)日：2010-09-07

申请号：US12413535

申请日：2009-03-28

申请人： Eugene Youjun Chen ,  Yiming Huai

发明人： Eugene Youjun Chen ,  Yiming Huai

IPC分类号： G11C11/00

CPC分类号： G11C11/1697 ,  G11C11/1653 ,  G11C11/1659 ,  G11C11/1673 ,  G11C11/1675 ,  G11C2013/0071 ,  G11C2013/0073

摘要： A method and system for providing and using a magnetic memory is described. The method and system include providing a plurality of magnetic storage cells. Each magnetic storage cell includes a magnetic element and a selection device coupled with the magnetic element. The magnetic element is programmed by write currents driven through the magnetic element in a first or second direction. In one aspect, the method and system include providing a voltage supply and a voltage pump coupled with the magnetic storage cells and the voltage supply. The voltage supply provides a supply voltage. The voltage pump provides to the selection device a bias voltage having a magnitude greater than the supply voltage. Another aspect includes providing a silicon on oxide transistor as the selection device. Another aspect includes providing to the body of the transistor a body bias voltage that is a first voltage when the transistor is off and a second voltage when the transistor is on.

摘要翻译： 描述了一种用于提供和使用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。 每个磁存储单元包括磁性元件和与磁性元件耦合的选择装置。 通过在第一或第二方向通过磁性元件驱动的写入电流来对磁性元件进行编程。 一方面，该方法和系统包括提供与磁存储单元和电压源耦合的电压源和电压泵。 电源提供电源电压。 电压泵向选择装置提供具有大于电源电压的幅度的偏置电压。 另一方面包括在氧化物晶体管上提供硅作为选择装置。 另一方面包括向晶体管的主体提供当晶体管截止时为第一电压的体偏置电压，以及晶体管导通时的第二电压。

公开(公告)号：US07760474B1

公开(公告)日：2010-07-20

申请号：US11487552

申请日：2006-07-14

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。

公开(公告)号：US07379327B2

公开(公告)日：2008-05-27

申请号：US11476171

申请日：2006-06-26

申请人： Eugene Youjun Chen ,  Yiming Huai ,  Alex Fischer Panchula ,  Lien-Chang Wang ,  Xiao Luo

发明人： Eugene Youjun Chen ,  Yiming Huai ,  Alex Fischer Panchula ,  Lien-Chang Wang ,  Xiao Luo

IPC分类号： G11C11/00

CPC分类号： G11C11/16

摘要： A method and system for providing a magnetic memory. The magnetic memory includes magnetic storage cells in an array, bit lines, and source lines. Each magnetic storage cell includes at least one magnetic element. The magnetic element(s) are programmable by write currents driven through the magnetic element(s). Each magnetic element has free and pinned layer(s) and a dominant spacer. The magnetic memory is configured such that either the read current(s) flow from the free layer(s) to the dominant spacer if the maximum low resistance state read current divided by the minimum low resistance state write current is greater than the maximum high resistance state read current divided by the minimum high resistance state write current or the read current(s) flow from the dominant spacer to the free layer(s) if the maximum low resistance state read current divided by the minimum low resistance state write current is less than the maximum high resistance state read current divided by the minimum high resistance state write current.

摘要翻译： 一种用于提供磁存储器的方法和系统。 磁存储器包括阵列中的磁存储单元，位线和源极线。 每个磁存储单元包括至少一个磁性元件。 磁性元件可以通过驱动通过磁性元件的写入电流来编程。 每个磁性元件具有自由和固定的层和主要间隔物。 如果最大低电阻状态读取电流除以最小低电阻状态写入电流除以最大高电阻，则磁存储器被配置为使得读取电流从自由层流向主要间隔物 如果最小低电阻状态读取电流除以最小低电阻状态写入电流，则状态读取电流除以最小高电阻状态写入电流或从主要间隔物到自由层的读取电流（s） 比最大高电阻状态读取电流除以最小高电阻状态写入电流。

公开(公告)号：US20070279968A1

公开(公告)日：2007-12-06

申请号：US11446391

申请日：2006-06-01

申请人： Xiao Luo ,  Eugene Youjun Chen ,  Lien-Chang Wang ,  Yiming Huai

发明人： Xiao Luo ,  Eugene Youjun Chen ,  Lien-Chang Wang ,  Yiming Huai

IPC分类号： G11C11/00

CPC分类号： G11C11/1675 ,  G11C8/12 ,  G11C8/14 ,  G11C11/1657 ,  G11C11/1659 ,  G11C11/1673

摘要： A method and system for providing a magnetic memory is described. The method and system include providing magnetic memory cells, local and global word lines, bit lines, and source lines. Each magnetic memory cell includes a magnetic element and a selection device connected with the magnetic element. The magnetic element is programmed by first and second write currents driven through the magnetic element in first and second directions. The local word lines are connected with the selection device of and have a first resistivity. Each global word line corresponds to a portion of the local word lines and has a resistivity lower than the first resistivity. The bit lines are connected with the magnetic element. The source lines are connected with the selection device. Each source line corresponds to a more than one of the magnetic memory cells and carries the first and second write currents.

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磁存储器单元，局部和全局字线，位线和源极线。 每个磁存储单元包括磁性元件和与该磁性元件连接的选择装置。 磁性元件通过在第一和第二方向通过磁性元件驱动的第一和第二写入电流来编程。 局部字线与第一电阻率的选择装置连接。 每个全局字线对应于局部字线的一部分，并具有低于第一电阻率的电阻率。 位线与磁性元件连接。 源极线与选择器件连接。 每个源极线对应于多个磁存储器单元并且承载第一和第二写入电流。

公开(公告)号：US07272034B1

公开(公告)日：2007-09-18

申请号：US11217258

申请日：2005-08-31

申请人： Eugene Youjun Chen ,  Yiming Huai

发明人： Eugene Youjun Chen ,  Yiming Huai

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. Each of the plurality of magnetic storage cells includes at least one magnetic element and a plurality of selection transistors. The at least one magnetic element is capable of being programmed using spin transfer induced switching by a write current driven through the at least one magnetic element. The at least one selection transistor is configured to allow the magnetic element to be alternately selected for writing and reading. Architectures for reading and writing to the magnetic storage cells are also described.

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。 多个磁存储单元中的每一个包括至少一个磁性元件和多个选择晶体管。 至少一个磁性元件能够通过由至少一个磁性元件驱动的写入电流使用自旋转移感应开关来编程。 至少一个选择晶体管被配置为允许磁性元件被交替地选择用于写入和读取。 还描述了用于读取和写入磁存储单元的体系结构。

公开(公告)号：US08779538B2

公开(公告)日：2014-07-15

申请号：US13491568

申请日：2012-06-07

申请人： Eugene Youjun Chen ,  Xueti Tang

发明人： Eugene Youjun Chen ,  Xueti Tang

IPC分类号： H01L27/22 ,  H01L29/04 ,  H01L47/00 ,  G11B5/33 ,  G11B5/127

CPC分类号： H01L43/10 ,  B82Y25/00 ,  B82Y40/00 ,  G01R33/098 ,  G11C11/161 ,  H01F10/3254 ,  H01F10/3286 ,  H01F41/307 ,  H01F41/34 ,  H01L27/228 ,  H01L43/08

摘要： In one embodiment, a magnetic element for a semiconductor device includes a reference layer, a free layer, and a nonmagnetic spacer layer disposed between the reference layer and the free layer. The nonmagnetic spacer layer includes a binary, ternary, or multi-nary alloy oxide material. The binary, ternary, or multi-nary alloy oxide material includes MgO having one or more additional elements selected from the group consisting of: Ru, Al, Ta, Tb, Cu, V, Hf, Zr, W, Ag, Au, Fe, Co, Ni, Nb, Cr, Mo, and Rh.

摘要翻译： 在一个实施例中，用于半导体器件的磁性元件包括设置在参考层和自由层之间的参考层，自由层和非磁性间隔层。 非磁性间隔层包括二元，三元或多元合金氧化物材料。 二元，三元或多元合金氧化物材料包括具有选自Ru，Al，Ta，Tb，Cu，V，Hf，Zr，W，Ag，Au，Fe中的一种或多种另外的元素的MgO ，Co，Ni，Nb，Cr，Mo和Rh。

公开(公告)号：US08546896B2

公开(公告)日：2013-10-01

申请号：US12941031

申请日：2010-11-06

申请人： Daniel Lottis ,  Eugene Youjun Chen ,  Xueti Tang ,  Steven M. Watts

发明人： Daniel Lottis ,  Eugene Youjun Chen ,  Xueti Tang ,  Steven M. Watts

IPC分类号： H01L29/82

CPC分类号： H01L43/08 ,  B82Y25/00 ,  G11C11/16 ,  G11C11/1659 ,  H01F10/3254 ,  H01F10/3259 ,  H01F10/3263 ,  H01F10/3272 ,  H01F10/3286

摘要： A method and system for providing a magnetic substructure usable in a magnetic device, as well as a magnetic element and memory using the substructure are described. The magnetic substructure includes a plurality of ferromagnetic layers and a plurality of nonmagnetic layers. The plurality of ferromagnetic layers are interleaved with the plurality of nonmagnetic layers. The plurality of ferromagnetic layers are immiscible with and chemically stable with respect to the plurality of nonmagnetic layers. The plurality of ferromagnetic layers are substantially free of a magnetically dead layer-producing interaction with the plurality of nonmagnetic layers. Further, the plurality of nonmagnetic layers induce a perpendicular anisotropy in the plurality of ferromagnetic layers. The magnetic substructure is configured to be switchable between a plurality of stable magnetic states when a write current is passed through the magnetic substructure.

摘要翻译： 描述了一种用于提供可用于磁性装置中的磁性子结构的方法和系统，以及使用该子结构的磁性元件和存储器。 磁性子结构包括多个铁磁层和多个非磁性层。 多个铁磁层与多个非磁性层交错。 所述多个铁磁层相对于所述多个非磁性层不混溶并且化学稳定。 多个铁磁层基本上没有与多个非磁性层产生磁性死层的相互作用。 此外，多个非磁性层在多个铁磁层中引起垂直各向异性。 磁性子结构被配置为当写入电流通过磁性子结构时在多个稳定磁状态之间切换。