Ferroelectricity induced by non-symmetry of A-site cations in hexagonal antiferromagnetic In1–Yb FeO3 (x = 0.1, 0.2, 0.3) perovskites

Zhou, Yong; Liu, Peng; Chen, Yang; Yang, Bin; Li, Bing; Liu, Fuyang; Liu, Xiaoyang

doi:10.1016/j.jre.2023.01.007

Cited by 1 publication

(1 citation statement)

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“…Notably, the converse piezoelectric effect of materials, when subjected to electric field stimulation, also plays a role in the switching of ferroelastic domains. This is inevitable due to the inherent piezoelectricity possessed by ferroelectric materials. − A schematic diagram (Figure c) is provided to help understand the observed phenomenon. Under the stimulation of a reverse electric field, the polarization of MFP is reversed.…”

Section: Resultsmentioning

confidence: 99%

Experimental Observation of the Fully Ferroelectric–Fully Ferroelastic Effect in Multiferroic Hybrid Perovskites

Jia,

Teri,

Luo

et al. 2024

J. Am. Chem. Soc.

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Since the concept of "multiferroic" was first proposed in 1968, the coupling effect between different ferroic orders has attracted great interest in energy, information, and biomedical fields. However, the fully ferroelectric−fully ferroelastic effect has never been experimentally observed in hybrid perovskites, even though this effect was predicted to exist half a century ago. Realizing such cross-linking effects of polarization vectors and strain tensors has always been a huge challenge because of the complex difference in these two ferroic origins. Here, we report a multiferroic with full ferroelectricity and full ferroelasticity in twodimensional (2D) hybrid perovskites based on ferroelectrochemistry. The dynamic molecular reorientations endow (cyclohexanemethylaminium) 2 PbCl 4 with a desired symmetry change of 4̅ 2mFmm2 at a Curie temperature of 411.8 K. More strikingly, the switchable evolution of ferroelastic domains was directly observed under the control of either electric or mechanical fields, which is the first experimental observation of a fully ferroelectric− fully ferroelastic effect in hybrid perovskites. This work would provide new insights into understanding the intrinsic cross-linking mechanism between ferroelectricity and ferroelasticity toward the development of multichannel interactive microelectronic devices.

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