Synthesis of Zr substituted B-site complex Bi₄(Zr_xTi_1-x)₃O₁₂ platelet microcrystals

Novel plate-like B-site complex Bi₄(Zr_xTi₁-_x)₃O₁₂ microcrystals consisted with both (Bi₂O₂)²⁺ layer and Zr⁴⁺substituted [Bi₂Ti₃O₁₀]^2- blocks have been synthesized through molten salt method. With the increase of Zr⁴⁺ content, the lattice constant of Bi₄(Zr_xTi₁-_x)₃O₁₂ increases. From the Raman analysis, the bending vibration was mainly influenced by the Zr⁴⁺ content, while both of bending and stretching vibration was influenced at relative high calcination temperature. The reaction conversion process was mainly controlled by the solution-precipitation mechanism and TiO₂ provided the basis crystal nucleation in NaCl-KCl molten salt, where the reactant ionic can precipitation, epitaxial growth and finally generated the final bismuth layer-structure products. Finally, fine crystallinity and orientation of plate-like Zr substituted Bi₄(Zr_0.1Ti_0.9)₃O₁₂ microcrystals with high aspect ratio can be successful fabricated at 900 °C, which paved a way to design and fabricate the novel plate-like B-site complex perovskite compounds in the future.