Reduced leakage current and excellent thermal stability in lead-free BiFeO3–BaTiO3-based piezoelectric ceramics

Lanthanum‐Induced Morphotropic Phase Boundary in BiFeO3–BaTiO3‐Based Lead‐Free Piezoelectric Ceramics

“…[ 18–20 ] The similarity in crystalline structure and MPB behavior between BF–BT and PZT suggests that a similar method to that used in PZT can be employed to optimize the piezoelectric activity of BF–BT as well. In our previous work, [ 21 ] we found that the co‐doping of Ga and Mn could remarkably improve the insulation properties of BF–BT ceramics. Therefore, in the present work, La was incorporated into a newly designed Ga and Mn co‐doped BF–BT‐based ceramic system, which have the formula of 0.71Bi 1.05(1− x ) La x Fe 0.98 Ga 0.02 O 3 –0.29BaTiO 3 + 0.1wt.%MnO 2 (abbreviated as BL x FG–BT), to evaluate its effect on the electrical properties.…”