Property, crystal, electronic structures and ferroelectric performance of Mo-substituted and Bi₄Si₃O₁₂-added (Bi,RE) ₄Ti₃O₁₂(RE=La,Nd) ferroelectric materials

Abstract

In this study, we synthesized (Bi,RE)₄(Ti,Mo,Si)₃O₁₂ (RE=La,Nd) and investigated their properties, crystal structure and ferroelectric performances. From P-E hysteresis measurements, it was confirmed that P_r increased and E_c decreased by substituting Mo or adding BSO. Crystal structure analysis indicates that spontaneous polarization tend to be resulted from distortion of the perovskite layer. It is also suggested that Mo-substitution and BSO-addition have a significant effect on the perovskite layer.