Dynamic piezoresponse force microscopy: Spatially resolved probing of polarization dynamics in time and voltage domains
Dynamic piezoresponse force microscopy: Spatially resolved probing of polarization dynamics in time and voltage domains
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DOI：
10.1063/1.4746080
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发表时间：
2012-09-01
影响因子：
3.2
通讯作者：
Kalinin, S. V.
中科院分区：
文献类型：
--
作者：
Kumar, A.;Ehara, Y.;Kalinin, S. V.
提出了一种用于检测压电力显微镜(PFM)磁滞回线测量过程中的动态现象的方法。动态PFM(D-PFM)需要开发用于分析和可视化多维数据的5维(5D)数据采集协议和相关方法。采用多元统计分析和唯象拟合相结合的方法，研究了具有致密铁弹性磁畴结构的模型铁电薄膜和铁电电容器在极化转换过程中的动态行为。在多域薄膜中，对开关数据的多变量分析表明，铁电和铁弹性成分可以解耦，并且可以探索时间动力学。在电容器中，极化动力学与微观结构之间存在着很强的相关性。讨论了D-PFM在探索铁电和离子体系中随时间变化的迟滞现象方面的潜力。(C)2012年美国物理研究所。[http://dx.doi.org/10.1063/1.4746080]
An approach for probing dynamic phenomena during hysteresis loop measurements in piezoresponse force microscopy (PFM) is developed. Dynamic PFM (D-PFM) necessitates development of 5-dimensional (5D) data acquisition protocols and associated methods for analysis and visualization of multidimensional data. Using a combination of multivariate statistical analysis and phenomenological fitting, we explore dynamic behavior during polarization switching in model ferroelectric films with dense ferroelastic domain structures and in ferroelectric capacitors. In polydomain films, multivariate analysis of the switching data suggests that ferroelectric and ferroelastic components can be decoupled and time dynamics can be explored. In capacitors, a strong correlation between polarization dynamics and microstructure is observed. The future potential of D-PFM for probing time-dependent hysteretic phenomena in ferroelectrics and ionic systems is discussed. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4746080]