Figure 1

(a) Schematic of a five-layered Aurivillius phase structure19, illustrating layered intergrowths of fluorite-like [Bi2O2]2+ units alternating with perovskite-like units having Bi cations at the A-sites (purple) and transition metal cations at the B-sites. BO6 octahedra are displayed in blue and oxygen atoms are displayed in red. (b) Atomic resolution HAADF-STEM image for B6TFMO. Bi cations are represented by purple circles and transition metals cations (Ti/Mn/Fe) are represented by blue circles.