Magnetic memories utilizing a magnetic element having an engineered free layer
    21.
    发明授权
    Magnetic memories utilizing a magnetic element having an engineered free layer 有权
    利用具有工程自由层的磁性元件的磁存储器

    公开(公告)号:US07663848B1

    公开(公告)日:2010-02-16

    申请号:US11523872

    申请日:2006-09-20

    IPC分类号: G11B5/127

    摘要: A method and system for providing a magnetic memory are described. The method and system include providing a plurality of magnetic storage cells. Each of the magnetic storage cells includes at least one magnetic element. The magnetic element(s) includes a pinned layer, a barrier layer that is a crystalline insulator and has a first crystalline orientation, and a free layer. The free layer includes a first ferromagnetic layer, a second ferromagnetic layer, and an intermediate layer between the first and second ferromagnetic layer. The barrier layer resides between the pinned and free layers. The first ferromagnetic layer resides between the barrier layer and the intermediate layer and is ferromagnetically coupled with the second ferromagnetic layer. The intermediate layer is configured such that the first ferromagnetic layer has the first crystalline orientation and the second ferromagnetic layer has a second crystalline orientation different from the first ferromagnetic layer. The magnetic element is configured to allow the free layer to be switched utilizing spin transfer when a write current is passed through the magnetic element.

    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。 每个磁存储单元包括至少一个磁性元件。 磁性元件包括钉扎层,作为结晶绝缘体并具有第一结晶取向的阻挡层和自由层。 自由层包括第一铁磁层,第二铁磁层和第一和第二铁磁层之间的中间层。 阻挡层位于固定层和自由层之间。 第一铁磁层位于阻挡层和中间层之间,并且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晶体取向,而第二铁磁层具有不同于第一铁磁层的第二晶体取向。 磁性元件配置成当写入电流通过磁性元件时允许利用自旋转移来切换自由层。

    Magnetic elements with spin engineered insertion layers and MRAM devices using the magnetic elements
    22.
    发明授权
    Magnetic elements with spin engineered insertion layers and MRAM devices using the magnetic elements 有权
    具有自旋工程插入层的磁性元件和使用磁性元件的MRAM器件

    公开(公告)号:US07495303B2

    公开(公告)日:2009-02-24

    申请号:US11699160

    申请日:2007-01-29

    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。

    SPIN TRANSFER MAGNETIC ELEMENT HAVING LOW SATURATION MAGNETIZATION FREE LAYERS
    23.
    发明申请
    SPIN TRANSFER MAGNETIC ELEMENT HAVING LOW SATURATION MAGNETIZATION FREE LAYERS 有权
    具有低饱和磁化自由层的旋转磁体元件

    公开(公告)号:US20070159734A1

    公开(公告)日:2007-07-12

    申请号:US11685723

    申请日:2007-03-13

    IPC分类号: G11B5/127

    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。

    Magnetic element having low saturation magnetization
    24.
    发明授权
    Magnetic element having low saturation magnetization 有权
    具有低饱和磁化强度的磁性元件

    公开(公告)号:US08476723B2

    公开(公告)日:2013-07-02

    申请号:US13160438

    申请日:2011-06-14

    IPC分类号: H01L29/82 H01L43/00

    摘要: A magnetic device including a magnetic element is described. The magnetic element includes a fixed layer having a fixed layer magnetization, a spacer layer that is nonmagnetic, and a free layer having a free layer magnetization. The free layer is changeable due to spin transfer when a write current above a threshold is passed through the first free layer. The free layer is includes low saturation magnetization materials.

    摘要翻译: 描述包括磁性元件的磁性装置。 磁性元件包括具有固定层磁化的固定层,非磁性的间隔层和具有自由层磁化的自由层。 当超过阈值的写入电流通过第一自由层时,由于自旋转移,自由层是可变的。 自由层包括低饱和磁化材料。

    Magnetic devices having oxide antiferromagnetic layer next to free ferromagnetic layer
    25.
    发明授权
    Magnetic devices having oxide antiferromagnetic layer next to free ferromagnetic layer 有权
    具有邻近自由铁磁层的氧化物反铁磁层的磁性器件

    公开(公告)号:US07859034B2

    公开(公告)日:2010-12-28

    申请号:US12425370

    申请日:2009-04-16

    IPC分类号: H01L29/82

    摘要: Magnetic multilayer structures, such as magnetic or magnetoresistive tunnel junctions (MTJs) and spin valves, having a magnetic biasing layer formed next to and magnetically coupled to the free ferromagnetic layer to achieve a desired stability against fluctuations caused by, e.g., thermal fluctuations and astray fields. Stable MTJ cells with low aspect ratios can be fabricated using CMOS processing for, e.g., high-density MRAM memory devices and other devices, using the magnetic biasing layer. Such multilayer structures can be programmed using spin transfer induced switching by driving a write current perpendicular to the layers to switch the magnetization of the free ferromagnetic layer.

    摘要翻译: 诸如磁性或磁阻型隧道结(MTJ)和自旋阀的磁性多层结构具有磁性偏置层,该磁性偏置层形成在自由铁磁层的旁边并磁耦合到自由铁磁层,以实现针对由例如热波动和误差引起的波动的期望的稳定性 领域。 具有低纵横比的稳定的MTJ单元可以使用CMOS处理制造,例如使用磁偏置层的例如高密度MRAM存储器件和其他器件。 可以通过驱动垂直于层的写入电流来转换自由铁磁层的磁化,使用自旋转移感应开关对这种多层结构进行编程。

    Devices and circuits based on magnetic tunnel junctions utilizing a multilayer barrier
    26.
    发明授权
    Devices and circuits based on magnetic tunnel junctions utilizing a multilayer barrier 有权
    基于利用多层屏障的磁隧道结的装置和电路

    公开(公告)号:US07851840B2

    公开(公告)日:2010-12-14

    申请号:US11520868

    申请日:2006-09-13

    IPC分类号: H01L29/96 H01L43/08

    CPC分类号: H01L43/08 G11C11/16

    摘要: Devices having magnetic or magnetoresistive tunnel junctions (MTJS) have a multilayer insulator barrier layer to produce balanced write switching currents in the device circuitry, or to produce the magnetic devices with balanced critical spin currents required for spin torque transfer induced switching of the magnetization, or both for the MTJs under both the forward and reversed bias directions.

    摘要翻译: 具有磁或磁阻隧道结(MTJS)的器件具有多层绝缘体阻挡层,以在器件电路中产生平衡的写入开关电流,或者产生具有自旋转矩传递感应开关磁化所需的平衡临界自旋电流的磁性器件,或 对于正向和反向偏置方向的MTJ都是这样。

    Magnetic device having stabilized free ferromagnetic layer
    27.
    发明授权
    Magnetic device having stabilized free ferromagnetic layer 有权
    具有稳定的自由铁磁层的磁性装置

    公开(公告)号:US07777261B2

    公开(公告)日:2010-08-17

    申请号:US11232356

    申请日:2005-09-20

    IPC分类号: H01L29/94

    摘要: Magnetic multilayer structures, such as magnetic or magnetoresistive tunnel junctions (MTJs) and spin valves, having a magnetic biasing layer formed next to and magnetically coupled to the free ferromagnetic layer to achieve a desired stability against fluctuations caused by, e.g., thermal fluctuations and astray fields. Stable MTJ cells with low aspect ratios can be fabricated using CMOS processing for, e.g., high-density MRAM memory devices and other devices, using the magnetic biasing layer. Such multilayer structures can be programmed using spin transfer induced switching by driving a write current perpendicular to the layers.

    摘要翻译: 诸如磁性或磁阻型隧道结(MTJ)和自旋阀的磁性多层结构具有磁性偏置层,该磁性偏置层形成在自由铁磁层的旁边并磁耦合到自由铁磁层,以实现针对由例如热波动和误差引起的波动的期望的稳定性 领域。 具有低纵横比的稳定的MTJ单元可以使用CMOS处理制造,例如使用磁偏置层的例如高密度MRAM存储器件和其他器件。 可以通过驱动垂直于层的写入电流,使用自旋转移感应开关对这种多层结构进行编程。

    Magnetic Devices Having Oxide Antiferromagnetic Layer Next To Free Ferromagnetic Layer
    28.
    发明申请
    Magnetic Devices Having Oxide Antiferromagnetic Layer Next To Free Ferromagnetic Layer 有权
    具有接近自由铁磁层的氧化物反铁磁层的磁性器件

    公开(公告)号:US20100072524A1

    公开(公告)日:2010-03-25

    申请号:US12425370

    申请日:2009-04-16

    IPC分类号: H01L29/82

    摘要: Magnetic multilayer structures, such as magnetic or magnetoresistive tunnel junctions (MTJs) and spin valves, having a magnetic biasing layer formed next to and magnetically coupled to the free ferromagnetic layer to achieve a desired stability against fluctuations caused by, e.g., thermal fluctuations and astray fields. Stable MTJ cells with low aspect ratios can be fabricated using CMOS processing for, e.g., high-density MRAM memory devices and other devices, using the magnetic biasing layer. Such multilayer structures can be programmed using spin transfer induced switching by driving a write current perpendicular to the layers to switch the magnetization of the free ferromagnetic layer.

    摘要翻译: 诸如磁性或磁阻型隧道结(MTJ)和自旋阀的磁性多层结构具有磁性偏置层,该磁性偏置层形成在自由铁磁层的旁边并磁耦合到自由铁磁层,以实现针对由例如热波动和误差引起的波动的期望的稳定性 领域。 具有低纵横比的稳定的MTJ单元可以使用CMOS处理制造,例如使用磁偏置层的例如高密度MRAM存储器件和其他器件。 可以通过驱动垂直于层的写入电流来转换自由铁磁层的磁化,使用自旋转移感应开关对这种多层结构进行编程。

    METHOD AND SYSTEM FOR PROVIDING FIELD BIASED MAGNETIC MEMORY DEVICES
    29.
    发明申请
    METHOD AND SYSTEM FOR PROVIDING FIELD BIASED MAGNETIC MEMORY DEVICES 有权
    用于提供现场偏磁磁记录装置的方法和系统

    公开(公告)号:US20080273380A1

    公开(公告)日:2008-11-06

    申请号:US11692090

    申请日:2007-03-27

    IPC分类号: G11C11/00 H01S4/00

    CPC分类号: G11C11/16 Y10T29/49002

    摘要: A method and system for providing a magnetic memory is disclosed. The method and system include providing a plurality of magnetic storage cells in an array, a plurality of bit lines, and at least one bias structure. Each of the plurality of magnetic storage cells includes at least one magnetic element having an easy axis and being programmable by at least one write current driven through the magnetic element. The plurality of bit lines corresponds to the plurality of magnetic storage cells. The at least one bias structure is magnetically coupled with the at least one magnetic element in each of the plurality of magnetic storage cells. The at least one bias structure provides a bias field in a direction greater than zero degrees and less than one hundred eighty degrees from the easy axis.

    摘要翻译: 公开了一种用于提供磁存储器的方法和系统。 该方法和系统包括在阵列,多个位线以及至少一个偏置结构中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具有容易轴的磁性元件,并且可由通过磁性元件驱动的至少一个写入电流来编程。 多个位线对应于多个磁存储单元。 所述至少一个偏置结构与所述多个磁存储单元中的每一个中的所述至少一个磁性元件磁耦合。 所述至少一个偏置结构在大于零度且小于离开易轴的百分之八十度的方向上提供偏置场。

    Magnetic elements with spin engineered insertion layers and MRAM devices using the magnetic elements
    30.
    发明授权
    Magnetic elements with spin engineered insertion layers and MRAM devices using the magnetic elements 有权
    具有自旋工程插入层的磁性元件和使用磁性元件的MRAM器件

    公开(公告)号:US07369427B2

    公开(公告)日:2008-05-06

    申请号:US10938219

    申请日:2004-09-09

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

    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。