Enhancement of Piezoelectricity by Novel Poling Method of the Rare‐Earth Modified BiFeO3–BaTiO3 Lead‐Free Ceramics

• DOI: 10.1002/aelm.202201210
• Publication Date: 2023-03-02T13:58:43Z
• Authors: Muhammad Habib; Xuefan Zhou; Lin Tang; Guoliang Xue; Attaur Rahman; Fazli Akram; Dou Zhang
• Keywords: Poling; Phase boundary; Hysteresis

Abstract In piezoceramics, the Curie temperature ( T C ) and piezoelectric coefficient d 33 are often inversely proportional, so it is very difficult to optimize high piezoelectricity simultaneously. addition, temperature‐insensitive strain * with small hysteresis also a longstanding obstacle in development of lead‐free ceramics. this work, facile approach donor doping strategy adopted replace Ba 2+ Yb 3+ , Y Sm Nd as result, 450 °C outstanding 422–436 pC N −1 achieved by novel magnetic poling method. Thermally‐stable performance ≈ 520–550 pm V Δ S 10%) H < 20%) results highly encourageable The main factors contributing morphotropic phase boundary, suppression defect charges doping, thermal quenching, mesoscale nanodomain size, excellent work superior those state‐of‐the‐art piezoceramics. synergistic approaches compositional design process beneficial for sensor actuator applications.