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Atomic-level quantitative analysis of electronic functional materials by aberration-corrected STEM

Chinese Physics B 2024年第11期33卷 12-25页

作者： Wanbo Qu Zhihao Zhao Yuxuan Yang Yang Zhang Shengwu Guo Fei Li Xiangdong Ding Jun Sun Haijun Wu State Key Laboratory for Mechanical Behavior of materials Xi'an Jiaotong UniversityXi'an 710049China electronic materials Research Laboratory Key Laboratory of the Ministry of Educationand School of Electronic and Information EngineeringXi'an Jiaotong UniversityXi'an 710049China Instrumental Analysis Center of Xi'an Jiaotong University Xi'an Jiaotong UniversityXi'an 710049China

The stable sub-angstrom resolution of the aberration-corrected scanning transmission electron microscope(ACSTEM)makes it an advanced and practical characterization technique for all *** to the prosperous advancement in computational technology,specialized software and programs have emerged as potent facilitators across the entirety of electron microscopy characterization *** advanced image processing algorithms promotes the rectification of image distortions,concurrently elevating the overall image quality to superior *** high-resolution,pixel-level discrete information and converting it into atomic-scale,followed by performing statistical calculations on the physical matters of interest through quantitative analysis,represent an effective strategy to maximize the value of electron microscope *** efficacious utilization of quantitative analysis of electron microscope images has become a progressively prominent consideration for materials scientists and electron microscopy *** article offers a concise overview of the pivotal procedures in quantitative analysis and summarizes the computational methodologies involved from three perspectives:contrast,lattice and strain,as well as atomic displacements and *** further elaborates on practical applications of these methods in electronic functional materials,notably in piezoelectrics/ferroelectrics and *** emphasizes the indispensable role of quantitative analysis in fundamental theoretical research,elucidating the structure–property correlations in high-performance systems,and guiding synthesis strategies.

关键词： AC-STEM quantitative analysis polarization electronic functional materials

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