Jin Xin, Zhang Yu-Yang, Du Shixuan
University of the Chinese Academy of Sciences and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China.
Fundam Res. 2023 Mar 2;3(3):322-331. doi: 10.1016/j.fmre.2023.02.009. eCollection 2023 May.
Two-dimensional (2D) ferroelectrics (FEs), which maintain stable electric polarization in ultrathin films, are a promising class of materials for the development of various miniature functional devices. In recent years, several 2D FEs with unique properties have been successfully fabricated through experiments. They have been found to exhibit some unique properties either by themselves or when they are coupled with other functional materials (e.g., ferromagnetic materials, materials with 5 electrons, etc.). As a result, several new types of 2D FE functional devices have been developed, exhibiting excellent performance. As a type of newly discovered 2D functional material, the number of 2D FEs and the exploration of their properties are still limited and this calls for further theoretical predictions. This review summarizes recent progress in the theoretical predictions of 2D FE materials and provides strategies for the rational design of 2D FE materials. The aim of this review is to provide guidelines for the design of 2D FE materials and related functional devices.
二维（2D）铁电体（FEs）在超薄膜中能保持稳定的极化，是开发各种微型功能器件的一类很有前景的材料。近年来，通过实验成功制备了几种具有独特性质的二维铁电体。人们发现它们自身或与其他功能材料（如铁磁材料、五电子材料等）耦合时会表现出一些独特的性质。因此，已经开发出了几种新型的二维铁电体功能器件，表现出优异的性能。作为一种新发现的二维功能材料，二维铁电体的数量及其性质的探索仍然有限，这就需要进一步的理论预测。本综述总结了二维铁电体材料理论预测的最新进展，并提供了二维铁电体材料合理设计的策略。本综述的目的是为二维铁电体材料及相关功能器件的设计提供指导。
