Homochiral Nickel Nitrite ABX3 (X = NO2–) Perovskite Ferroelectrics
dataset
posted on 2020-04-06, 16:12 authored by Bin-Bin Deng, Chu-Chu Xu, Ting-Ting Cheng, Yi-Ting Yang, Yan-Ting Hu, Pan Wang, Wen-Hui He, Meng-Juan Yang, Wei-Qiang LiaoChiral organic–inorganic
perovskites (COIPs) have recently
attracted increasing interest due to their unique inherent chirality
and potential applications in next-generation optoelectronic and spintronic
devices. However, COIP ferroelectrics are very sparse. In this work,
for the first time, we present the nickel-nitrite ABX3 COIP
ferroelectrics, [(R and S)-N-fluoromethyl-3-quinuclidinol]Ni(NO2)3 ([(R and S)-FMQ]Ni(NO2)3), where the X-site is the rarely seen NO2– bridging ligand. [(R and S)-FMQ]Ni(NO2)3 display mirror-relationship
in the crystal structure and vibrational circular dichroism signal.
It is emphasized that [(R and S)-FMQ]Ni(NO2)3 show splendid ferroelectricity with both an
extremely high phase-transition point of 405 K and a spontaneous polarization
of 12 μC/cm2. To our knowledge, [(R and S)-FMQ]Ni(NO2)3 are the
first examples of nickel-nitrite based COIP ferroelectrics. This finding
expands the COIP family and throws light on exploration of high-performance
COIP ferroelectrics.
