fig1
Figure 1. (A-D) Overview and representative reflection plane patterns. The reflection peaks marked by the yellow arrow in (B) arise from the commensurate structure along the [001]P direction. (E, F) Crystal structure of PLZST and the geometry relationship between the orthorhombic unit cell (solid black line) and the perovskite lattice (dotted black line). Subscripts O and P denote the orthogonal and perovskite lattices, respectively. PLZST: (Pb0.91La0.06)(Zr0.42Sn0.40Ti0.18)O3.