Max Planck Institute of Microstructure Physics, Halle (Saale), Germany.
Nano Lett. 2010 Apr 14;10(4):1266-70. doi: 10.1021/nl9038339.
Switching dynamics of nanoscale ferroelectric capacitors with a radius of 35 nm were investigated using piezoresponse force microscopy. Polarization switching starts with only one nucleation event occurring only at the predetermined places. The switching dynamics of nanoscale capacitors did not follow the classical Kolmogorov-Avrami-Ishibashi model. On the basis of the consideration of two separate (nucleation and growth) steps within a nonstatistical finite system, we have proposed a model which is in good agreement with the experimental results.
使用压电力显微镜研究了半径为 35nm 的纳米级铁电电容器的开关动力学。极化开关仅从仅在预定位置发生的一个成核事件开始。纳米级电容器的开关动力学不符合经典的 Kolmogorov-Avrami-Ishibashi 模型。基于在非统计有限系统内考虑两个单独（成核和生长）步骤的基础上，我们提出了一个与实验结果吻合良好的模型。
