Emerging new applications of antiferroelectric perovskite oxides based on their fascinating phase transformation between polar and nonpolar states have provided considerable attention to this class of materials even decades after the discovery of antiferroelectricity. After presenting the challenge of formulating a precise definition of antiferroelectric materials, we briefly summarize proposed applications. In the following, we focus on the crystallographic structures of the antiferroelectric and ferroelectric phases of NaNbO₃, which is emerging as a promising alternative to PbZrO₃-based systems. The field-induced phase transition behavior of NaNbO₃-based AFE materials in the form of single crystals, bulk ceramics, and multilayer ceramic capacitors is reviewed. Recent advances in a group of materials exhibiting high energy storage performance and relaxor-like behavior are also covered. The influence of electrode geometry on phase transition behavior and thus on the energy storage property is briefly addressed. The review concludes with an overview of the remaining challenges related to the fundamental understanding of the scientific richness of AFE materials in terms of structure, microstructure, defect transport under high fields, and phase transition dynamics required for their future development and applications.

反铁电钙钛矿氧化物基于其在极性和非极性状态之间迷人的相变而出现的新应用，即使在发现反铁电性几十年后，也引起了人们对这类材料的相当大的关注。在介绍了制定反铁电材料精确定义的挑战之后，我们简要总结了拟议的应用。在下文中，我们重点关注 NaNbO 3 的反铁电相和铁电相的晶体结构，它正在成为基于_{PbZrO 3的}系统的有前途的替代品。_{NaNbO 3}的场致相变行为回顾了单晶、大块陶瓷和多层陶瓷电容器形式的基于 AFE 的材料。还涵盖了一组表现出高储能性能和类弛豫行为的材料的最新进展。简要介绍了电极几何形状对相变行为的影响，从而对能量存储特性的影响。综述最后概述了与 AFE 材料在结构、微观结构、高场下缺陷传输以及未来开发和应用所需的相变动力学方面的科学丰富性的基本理解相关的剩余挑战。