Magnetic random access memory and method of reducing critical current of the same
    3.
    发明授权
    Magnetic random access memory and method of reducing critical current of the same 有权
    磁性随机存取存储器和降低临界电流的方法

    公开(公告)号:US07596017B2

    公开(公告)日:2009-09-29

    申请号:US11679827

    申请日:2007-02-27

    IPC分类号: G11C11/14

    摘要: A magnetic random access memory includes a substrate, a free layer and a spacer layer. The substrate and the free layer are made of a vertical anisotropy ferrimagentic thin film. The spacer layer is sandwiched between the substrate and the free layer and is made of an insulating layer. The method uses a modified Landau-Lifshitz-Gilbert equation to obtain a critical current value as a function of exchange coupling constant. The critical current value is predictable under several external magnetic fields being applied. When the exchange coupling constant is proportionally varied, the critical current value is reduced to a third of its original value under an optimum state.

    摘要翻译: 磁性随机存取存储器包括衬底,自由层和间隔层。 衬底和自由层由垂直各向异性铁素体薄膜制成。 间隔层夹在基片和自由层之间,由绝缘层制成。 该方法使用修正的Landau-Lifshitz-Gilbert方程来获得临界电流值作为交换耦合常数的函数。 在应用的几个外部磁场下,临界电流值是可预测的。 当交换耦合常数成比例地变化时,在最佳状态下临界电流值减小到其初始值的三分之一。

    MAGNETIC RANDOM ACCESS MEMORY AND METHOD OF REDUCING CRITICAL CURRENT OF THE SAME
    4.
    发明申请
    MAGNETIC RANDOM ACCESS MEMORY AND METHOD OF REDUCING CRITICAL CURRENT OF THE SAME 有权
    磁性随机存取存储器和减少其相关电流的方法

    公开(公告)号:US20080205123A1

    公开(公告)日:2008-08-28

    申请号:US11679827

    申请日:2007-02-27

    IPC分类号: G11C11/00

    摘要: A magnetic random access memory includes a substrate, a free layer and a spacer layer. The substrate and the free layer are made of a vertical anisotropy ferrimagentic thin film. The spacer layer is sandwiched between the substrate and the free layer and is made of an insulating layer. The method uses a modified Landau-Lifshitz-Gilbert equation to obtain a critical current value as a function of exchange coupling constant. The critical current value is predictable under several external magnetic fields being applied. When the exchange coupling constant is proportionally varied, the critical current value is reduced to a third of its original value under an optimum state.

    摘要翻译: 磁性随机存取存储器包括衬底,自由层和间隔层。 衬底和自由层由垂直各向异性铁素体薄膜制成。 间隔层夹在基片和自由层之间,由绝缘层制成。 该方法使用修正的Landau-Lifshitz-Gilbert方程来获得临界电流值作为交换耦合常数的函数。 在应用的几个外部磁场下,临界电流值是可预测的。 当交换耦合常数成比例地变化时,在最佳状态下临界电流值减小到其初始值的三分之一。