应变调制型多铁异质结器件的HSpice电路建模

HSpice Circuit Modeling of the Strain-Mediated Multiferroic Heterostructure Device

由于具有天然的非易失性和极低的动态功耗,应变调制型多铁异质结在后摩尔时代新型电子技术中具有广阔的应用前景。通过分析反映磁致伸缩层磁化强度动态特性的Landau-LifshitzGilbert(LLG)方程,并参考电容的伏安特性,建立了该器件的一种HSpice电路仿真模型。仿真结果表明,在应力时钟的驱动下,磁化强度完成了面内180°翻转,实现了两个逻辑稳态之间的转换。随后,通过将HSpice仿真结果与物理模型的数值分析结果进行对比,验证了电路模型的有效性。研究结果为今后基于应变调制型多铁异质结器件设计大规模集成电路奠定了基础。

Due to the intrinsic nonvolatility and the ultra-low dynamic energy consumption,the strain-mediated multiferroic heterostructure has wide application prospects in the post moore＇s law period.An HSpice circuit simulation model of the strain-mediated multiferroic heterostructure device was established by analyzing the Landau-Lifshitz-Gilbert（LLG）equation which reflected the dynamic characteristic of magnetization of the magnetostrictive layer and considering the volt-ampere characteristic of the capacitor.The simulation results show that the magnetization can rotate 180°by the strain clocking signal,which means that the transition between the two logic steady states is realized.Thereafter,the validity of the circuit model was verified by comparing the HSpice simulation results with the numerical analysis results of the physical model.The research result lays the foundation for the design of large scale integrated circuits based on strainmediated multiferroic heterostructure devices in the future.