Figure 3

Schematic crystal structural diagram performed through the Vesta software by using the output of Rietveld refinement crystallographic information file (cif). (a) Crystal structure of BaBi3.90Sm0.1Ti4O15 unit cell with A21am space group along c-axis. (b,c) Representation of the (Bi2O2)2+ fluorite like layered units with geometrically alternating arrangement of 4-layered (BaBi2Ti4O13)2− perovskites in connection to TiO6 centred octahedra.