Visualization of Ferroelectric Domains in Thin Films of Molecular Materials Using Confocal Micro-Raman Spectroscopy
作者机构：Jiangsu Key Laboratory for Science and Applications of Molecular FerroelectricsSoutheast UniversityNanjing211189P.R.China School of Chemistry and Chemical EngineeringSoutheast UniversityNanjing211189P.R.China
出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)
年 卷 期：2022年第38卷第6期
页 面：1394-1399页
核心收录：
学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学]
基 金：supported by the National Key R&D Program of China (No.2021YFA1200700) the National Natural Science Foundation of China (No.21925502) the Fundamental Research Funds for the Central Universities,China.The authors gratefully acknowledge professor Sheng-Ping Guo of Yangzhou University for his help in DFT calculation
主 题：Molecular ferroelectric Ferroelectric film Domain Polarized Raman spectroscopy Raman imaging
摘 要：Ferroelectrics are an important class of functional *** all their unique properties,the study of their ferroelectric domains and domain walls is of great interest due to their importance in ferroelectric *** are many methods to characterize ferroelectric domains,namely,scanning probe microscopy,optical microscopy,electron microscopy,***,newly emerged molecular ferroelectrics are attracting much attention from chemists,physicists and researchers in material sciences due to their structural flexibility,light mass,simple fabrication,***,for the characterization of molecular ferroelectric domains,most conventional methods require either a complicated preparation process or direct contact between physical probes and material surfaces,limiting the development of molecular ferroelectric *** this report,we have demonstrated that confocal micro-Raman spectroscopy,as a nondestructive and noncontact in-situ method,is very suitable for studying the ferroelectric polarization and structures of domains in molecular *** recently reported molecular ferroelectric trimethylchloromethyl ammonium trichlorocadmium(II)(TMCM-CdCl_(3))as an example,the non-180°domains have been characterized and visualized at different *** a simple and extendable method requires minimum sample preparation,which would further benefit the research of molecular ferroelectric domain engineering and promote the miniaturization and integration of molecular ferroelectric films.
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