Customizing Room‐Temperature Perovskite Ferroelectrics  toward the Multichannel Domain Manipulation

作者：Haojie Xu, Wuqian Guo, Yi Liu, Yu Ma, Qingshun Fan, Liwei Tang, Wenjing Li, H. Q. Ni, Junhua Luo, Zhihua Sun · 发表于：Angewandte Chemie International Edition · 年份：2025 · DOI：10.1002/anie.202501238 · 被引用次数：10 · 研究领域：Perovskite Materials and Applications、Ferroelectric and Piezoelectric Materials、Silicone and Siloxane Chemistry

Abstract Manipulating domain structure in ferroelectrics by external stimuli presents a fascinating avenue for new‐generation electronic devices. However, multichannel controlling of ferroelectric domains is still a challenge, due to the lack of knowledge on their bistability to diverse physical stimuli. Herein, we have customized a series of perovskite ferroelectrics, (C n H 2n+1 NH 3 ) 2 (CH 3 NH 3 ) 2 Pb 3 Br 10 ( n = 2–7), of which the Curie temperatures are modulated in a wide temperature range (Δ T = 74 K) by tailoring chain length of organic spacers. Strikingly, the n = 7 member is a room‐temperature ferroelectric with bistable characteristics, thus endowing the manipulation of domains via four channels (i.e., thermal, stress, light, and electric fields). Such a non‐volatile memory behavior of the stress‐switching domain is unprecedented in hybrid perovskite ferroelectrics. This manipulation of domains reveals the unique bistability of its ferroelectric orders, which sheds light on the future advance of customizing electric‐ordered materials toward smart device applications.