Fig. 1: Average structural characteristics of PbZrO3 and PLZST system.
From: Unveiling the ferrielectric nature of PbZrO3-based antiferroelectric materials
a The XRD patterns showing two types of superlattice reflections originated from the cations modulation marked by arrows and octahedra tilts marked by dash rectangle, respectively. The 2θ range of 18°–20° are enlarged on the right to clearly show 1/2{11\(\bar 1\)} peaks associated with antiphase tilt of oxygen octahedra. The main {100} peaks of PbZrO3 is approximately aligned with PLZST 50/50/0 for clearly comparing modulation period. b The [001] SAED patterns showing the modulation wave along [110] direction. The satellite reflections associated with modulation mode are marked by yellow arrows. c The modulation period (NIMS) = λ/d110 (λ refers to modulation wavelength in real-space) calculated from SAED patterns. The average data of modulation period for each sample is obtained from more than five different areas and error bars represent the standard deviation.
