基于自旋传输和磁动力学耦合模型,研究了纳磁体形状对全自旋逻辑(ASL)器件临界开关电流以及开关延迟时间和功耗的影响。仿真结果显示,由于椭圆柱纳磁体构成的ASL器件易磁化轴方向退磁因子相比长方体纳磁体器件要小,所以其形状各向异性能和临界开关电流更小。从而在相同的注入电流情况下,椭圆柱纳磁体构成的ASL器件磁矩翻转时间比长方体纳磁体更短,所以椭圆柱纳磁体开关延迟时间和功耗均小于长方体纳磁体构成的ASL器件。上述结论为合理选择纳磁体形状提供了理论依据,所得结果对ASL器件的设计及应用具有重要的意义,为优化ASL器件开关延迟时间和功耗提供了一种新的方法。 Based on the spin-transfer and magnetokinetic coupling models, the influence of the shape of the magnet on the critical switching current, the switching delay time and the power dissipation of ASL devices are investigated. The simulation results show that the shape anisotropy energy and the critical switching current of the ASL device composed of elliptical columnar magnets are smaller than that of the rectangular parallelepipedal nanorod components in the easy magnetization axis direction. Therefore, under the same injection current condition, the ASL device composed of elliptical columnar magnets has a shorter moment of magnetic moment than the rectangular parallelepipedal nanorod, so the switching delay time and power consumption of the elliptic columnar magnet are smaller than those of the ASL device. The above conclusions provide a theoretical basis for the reasonable choice of the shape of the magnet. The obtained results are of great significance for the design and application of ASL devices, and provide a new method for optimizing the switching delay and power dissipation of ASL devices.