A Halogen-Substitution Strategy for Tuning Structure, Phase Transition, and Ferroelectric/Nonlinear Optical Properties in Fe-Based ABX4-Type Organic-Inorganic Hybrid Molecular Ferroelectrics.
This study designs and synthesizes a series of ABX4-type organic-inorganic hybrid molecular ferroelectrics [Et2Me(CH2X)N][FeBr4] (X = Cl, Br, I; compounds 1-3). Single-crystal X-ray diffraction (SCXRD), differential scanning calorimetry (DSC), dielectric measurements, and second-harmonic generation (SHG) measurements a...