An Above-Room-Temperature Molecular Ferroelectric: [Cyclopentylammonium]CdBr.

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ID: 74169
2019
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Abstract
Molecular ferroelectrics as alternatives to the conventional inorganic ferroelectrics have been greatly developed in past decades; many of these have been discovered and designed through various chemical means due to their structural adjustability. However, it is still a huge challenge to obtain high (above room temperature) Curie temperature () molecular ferroelectrics to meet the application requirements. Here, we present a new organic-inorganic hybrid molecular ferroelectric, [cyclopentylammonium]CdBr (), showing a moderate above-room-temperature of 340.3 K. The mechanism of the ferroelectric phase transition from to 2 in is ascribed to the order-disorder transition of both the organic cations and inorganic anions, affording a spontaneous polarization of 0.57 μC/cm for the ferroelectric phase. Using piezoresponse force microscopy (PFM), we clearly observed the antiparallel 180° stripe domains and realized the polarization switching, unambiguously establishing the existence of room-temperature ferroelectricity in the thin film. These attributes make it attractive for use in flexible devices, soft robotics, biomedical devices, and other applications.
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huang2019aninorganic Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Huang, Chao-Ran;Luo, Xuzhong;Liao, Wei-Qiang;Tang, Yuan-Yuan;Xiong, Ren-Gen;
Journal Inorganic chemistry
Year 2019
DOI
10.1021/acs.inorgchem.9b03098
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Keywords
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