Bo Zhuang, Lei Pan, Zhi-Long Li, Jiu-Yang Liu, Zhi-Xu Zhang, Kun Ding*, Yi Zhang*, Zunqi Liu* and Da-Wei Fu*,
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Multiple Ferroic Orderings in Lead-Free Hybrid Material Induced by Molecular Asymmetric Modification
The characteristics of multiple ferroic orderings can afford potential applications such as mechanical switches, energy conversion, and pressure sensors. However, it remains a tremendous challenge to achieve multiple ferroic orderings due to rigorous requirements for certain symmetry in the crystal lattice and symmetry breaking. The organic–inorganic halide material has been regarded as possessing great potential for ferroelectric and ferroelastic phase transition for its unique structures. Herein, by modifying molecular symmetries, we successfully obtained the lead-free hybrid halide material (AMP)2SbBr5 (AMP = 2-Amino-2-methyl-1-propanol). With the help of hydroxyl insertion, the mirror symmetry was broken, realizing ferroelectric and ferroelastic phase transitions. The lone-pair electron activity as well as the directional ordering of the organic cations triggered the saturated polarization of 11.28 μC cm–2, which is the largest polarization ever found in antimony-based molecular ferroelectrics. This study enhanced lead-free molecular ferroelectric development and offers instructive inspiration for designing multiple ferroic orderings.
期刊介绍：
ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.
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