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    • 4. 发明授权
    • Method and system for providing magnetic junctions having improved polarization enhancement and reference layers
    • 用于提供具有改进的极化增强和参考层的磁结的方法和系统
    • US08796796B2
    • 2014-08-05
    • US13721214
    • 2012-12-20
    • Steven M. WattsKiseok Moon
    • Steven M. WattsKiseok Moon
    • H01L29/82
    • H01L29/82G11C11/161H01L29/66007H01L43/08
    • A magnetic junction is provided. The magnetic junction includes a reference stack, a nonmagnetic spacer layer and a free layer. The reference stack includes a high perpendicular magnetic anisotropy (PMA) layer and a graded polarization enhancement layer (PEL) between the high PMA and nonmagnetic spacer layers. The PEL is magnetically coupled with the reference layer. The PEL includes magnetic layers and nonmagnetic insertion layers. At least part of the PEL has a spin polarization greater than the PMA layer's. The nonmagnetic insertion layers are configured such that the magnetic layers are ferromagnetically coupled and the crystalline orientations of the high PMA and nonmagnetic spacer layers are decoupled. Each nonmagnetic insertion layer's thickness is insufficient for the crystalline orientations to be decoupled in the absence of the remaining nonmagnetic insertion layers. The free layer is switchable between stable magnetic states when a write current is passed through the magnetic junction.
    • 提供一个磁性结。 磁结包括参考叠层,非磁性间隔层和自由层。 参考堆叠包括高PMA和非磁性间隔层之间的高垂直磁各向异性(PMA)层和渐变极化增强层(PEL)。 PEL与参考层磁耦合。 PEL包括磁性层和非磁性插入层。 PEL的至少一部分具有大于PMA层的自旋极化。 非磁性插入层被配置为使得磁性层被铁磁耦合并且高PMA和非磁性间隔层的结晶取向被解耦。 每个非磁性插入层的厚度不足以使晶体取向在不存在剩余的非磁性插入层的情况下被去耦合。 当写入电流通过磁结时,自由层可在稳定的磁状态之间切换。
    • 9. 发明申请
    • METHOD AND SYSTEM FOR PROVIDING MAGNETIC JUNCTIONS HAVING IMPROVED POLARIZATION ENHANCEMENT AND REFERENCE LAYERS
    • 用于提供改进的极化增强和参考层的磁性结的方法和系统
    • US20140175574A1
    • 2014-06-26
    • US13721214
    • 2012-12-20
    • Steven M. WattsKiseok Moon
    • Steven M. WattsKiseok Moon
    • H01L29/82H01L29/66
    • H01L29/82G11C11/161H01L29/66007H01L43/08
    • A magnetic junction is provided. The magnetic junction includes a reference stack, a nonmagnetic spacer layer and a free layer. The reference stack includes a high perpendicular magnetic anisotropy (PMA) layer and a graded polarization enhancement layer (PEL) between the high PMA and nonmagnetic spacer layers. The PEL is magnetically coupled with the reference layer. The PEL includes magnetic layers and nonmagnetic insertion layers. At least part of the PEL has a spin polarization greater than the PMA layer's. The nonmagnetic insertion layers are configured such that the magnetic layers are ferromagnetically coupled and the crystalline orientations of the high PMA and nonmagnetic spacer layers are decoupled. Each nonmagnetic insertion layer's thickness is insufficient for the crystalline orientations to be decoupled in the absence of the remaining nonmagnetic insertion layers. The free layer is switchable between stable magnetic states when a write current is passed through the magnetic junction.
    • 提供一个磁性结。 磁结包括参考叠层,非磁性间隔层和自由层。 参考堆叠包括高PMA和非磁性间隔层之间的高垂直磁各向异性(PMA)层和渐变极化增强层(PEL)。 PEL与参考层磁耦合。 PEL包括磁性层和非磁性插入层。 PEL的至少一部分具有大于PMA层的自旋极化。 非磁性插入层被配置为使得磁性层被铁磁耦合并且高PMA和非磁性间隔层的结晶取向被解耦。 每个非磁性插入层的厚度不足以使晶体取向在不存在剩余的非磁性插入层的情况下被去耦合。 当写入电流通过磁结时,自由层可在稳定的磁状态之间切换。