fig4

Figure 4. (A) Structural representations of LaFeO₃ and Ce-doped derivatives (La_0.75Ce_0.25FeO₃, La_0.5Ce_0.5FeO₃, La_0.25Ce_0.75FeO_3, and CeFeO₃) highlighting the FeO₆ octahedral framework; (B) Calculated FeO₆ octahedral distortion parameters for LaFeO₃ and Ce-doped variants; (C) Schematic of ion-exchange synthesis for SnHfO₃ using SnClF as the precursor. This figure is quoted with permission^[63]; (D) Illustration of ion diffusion-induced symmetry reduction and structural tilting in SnHfO₃; (E) A-site distortion diagram showcasing the structural rearrangement in SnHfO₃; (F) Rietveld refinement pattern demonstrating the phase transition behavior in SnHfO₃. This figure is quoted with permission^[64]; (G) Overview of four chemical strategies to intercept metastable phases; (H) Phase transition pathway analysis between NTTO and LTTO phases. This figure is quoted with permission^[65]; (I) Convex hull analysis for phase stability based on formation energy. (J) Structural refinement of HP-LTTO phase; (K) Stabilization mechanism for HP-LTTO thin films on CaCO₃ substrate, with detailed octahedral structures of LiO₆ (green), TeO₆ (blue), TeO₆ (brown), and CaO₆ (yellow), and spherical representations for carbon (brown) and oxygen (red) atoms. This figure is quoted with permission^[66].NTTO: Na₂TiTeO₆; HP-LTTO: high-pressure synthesis of Li₂TiTeO₆.