铁电性
化学
电介质
极化(电化学)
溶剂
结晶
混合材料
纳米技术
有机化学
光电子学
物理化学
材料科学
作者
Shulin Jiao,Yan Zhu,Peijie Jiao,Yuying Wu,Zheng Tang,Dong Li,Zhangran Gao,Xiaofan Sun,Hong‐Ling Cai,Xiaoshan Wu
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2021-11-04
卷期号:60 (22): 17212-17218
被引量:11
标识
DOI:10.1021/acs.inorgchem.1c02536
摘要
Organic-inorganic hybrid ferroelectrics (OIHFs) have fueled enormous interest benefiting from their less environmental pollution, performance-tailored functionality, low product costs as well as tunability of structures. However, the lack of material synthesis approaches and diverse targeted molecular design is a stumbling block for designing novel OIHFs rationally. Here, we report a unique organic-inorganic hybrid ferroelectric (3,3-difluoropyrrolidine)2CdCl41 and another novel nonferroelectric crystal (3,3-difluoropyrrolidine)2Cd2Cl62 by changing various crystallization solvents. Significantly, 1 presents a ferroelectric phase transition behavior at ∼367 K, and the distinct symmetry breaking, i.e., mmmFm, sets up a biaxial ferroelectric with four equivalent directions of polarization, which has a Pr ∼ 0.77 μC/cm2. Systematic studies prove that ferroelectricity can be ascribed to the synergistic effects of the distortion of the inorganic anion skeleton and the ordering of organic cations. This work reveals the potential of constructing novel ferroelectrics based on the solvent selective effect and pyrrolidinium as organic cations.
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