AgNbO₃-based ceramics have been considered as promising lead-free materials for energy storage applications. The antiferroelectricity stability is a key factor for energy storage performance, which can be affected by Goldschmidt tolerance factor (t), phase structure and so on. The competition between t and phase structure was designed in A-site doped AgNbO₃ ceramics. Li-doping leads to reduced t and a phase transition from monoclinic antiferroelectric phase to rhombohedral ferroelectric phase. Na-doping results in decreased t without phase transition. K-doping causes a phase transition from monoclinic antiferroelectric phase to orthorhombic ferroelectric phase. The enhanced ferroelectricity in (Ag_1-xLi_x)NbO₃ and (Ag_1-xK_x)NbO₃ ceramics is due to the appearances of rhombohedral and orthorhombic phase, respectively. The enhanced antiferroelectricity in (Ag_1-xNa_x)NbO₃ ceramics is attributed to the decreased t. By analyzing t, phase structure and antiferroelectricity/ferroelectricity, it seems that the phase structure is dominating in determining the ferroelectricity/antiferroelectricity rather than t in A-site doped AgNbO₃ ceramics.

基于AgNbO ₃的陶瓷被认为是用于储能应用的有前途的无铅材料。反铁电稳定性是影响储能性能的关键因素，它可能会受到Goldschmidt公差因子（t），相结构等的影响。在A位掺杂的AgNbO ₃陶瓷中设计了t和相结构之间的竞争。锂掺杂导致t减小，并从单斜反铁电相过渡到菱面体铁电相。Na掺杂导致t降低没有相变 K掺杂引起从单斜反铁电相到斜方铁电相的相变。（Ag _{1- x} Li _x）NbO ₃和（Ag _{1- x} K _x）NbO ₃陶瓷中增强的铁电性分别是由于菱形和正交晶相的出现。（Ag _{1- x} Na _x）NbO ₃陶瓷中反铁电性的增强归因于t的降低。通过分析t，相结构和反铁电/铁电，似乎是在确定A位置掺杂的AgNbO ₃陶瓷中铁电/反铁电而不是t时，相结构占主导地位。