Two-dimensional organic-inorganic hybrid perovskite ferroelastics: (PEA)2[CdCl4], (3-FPEA)2[CdCl4], and (4-FPEA)2[CdCl4]

被引：7

作者：

Yue, Zhi-Yuan ^{[1
]}

Luo, Wang ^{[1
]}

Wang, Na ^{[1
]}

Li, Hua-Kai ^{[1
]}

Xu, Ze-Jiang ^{[1
]}

Feng, Yan ^{[1
]}

Shi, Chao ^{[1
]}

Ye, Heng-Yun ^{[1
]}

Miao, Le-Ping ^{[1
]}

机构：

[1] Jiangxi Univ Sci & Technol, Chaot Matter Sci Res Ctr, Jiangxi Prov Key Lab Funct Mol Mat Chem, Ganzhou 341000, Peoples R China

来源：

CRYSTENGCOMM | 2023年 / 25卷 / 08期

基金：

中国国家自然科学基金;

关键词：

CRYSTALS; PHASE; BIVO4;

D O I：

10.1039/d2ce01390h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

As a mechanical analog of ferroelectricity and ferromagnetism, ferroelasticity has made outstanding contributions in the fields of energy conversion, information processing, and mechanical switching. However, research on 2D ferroelasticity is lacking so far, and it is still a challenge to synthesize 2D perovskite ferroelastics. Here, we successfully constructed three 2D organic-inorganic hybrid ferroelastics: (PEA)(2)CdCl4 [PEA = phenethylamium cation, 1], (3-FPEA)(2)CdCl4 [3-FPEA = 3-fluorophenethylamium cation, 2] and (4-FPEA)(2)CdCl4 [4-FPEA = 4-fluorophenethylamium cation, 3]. These compounds undergo a structural phase transition between 379-385 K, exhibit temperature-triggered ferroelasticity, and possess a dielectric transition. The structural analysis of temperature-variable single crystals indicates that the reason for the phase transition of the ferroelastics is the order-disorder transition of cations and distortion of the anion framework. This research provides new options for a new generation of 2D perovskite ferroelastics.

引用

页码：1270 / 1275

页数：6