Nanosized Multistate Configurations of Relaxor‐Like Antiferroelectric Revealed by Atomic‐Scale In Situ Electron Microscopy

materials is directly observed. The nanosized multistate configurations formed during transformation, which encompass antiferroelectric, quasi-paraelectric, and ferroelectric nanoregions, are responsible for the slim double hysteresis loops characteristic of relaxor-like antiferroelectric. These findings offer new guidelines for validating the physical models essential for the development of high-performance relaxor-like antiferroelectrics.