Improved chemical defects and electrical properties of Li/Al co-doped BiFeO3-BaTiO3 lead-free ceramics

The impact of defects on the performance of piezoelectric materials has been a topic of considerable debate, due to the competing actions of the deteriorating effect of the defects themselves on the ceramic resistance and the positive effect on the piezoelectric performance resulting from the defect polarization. In order to probe its combined influence on piezoelectric properties, here, we designed BiFeO 3 (BF)-based ceramics with different defect concentrations. It has been demonstrated that the incorporation of an appropriate concentration of defects into ceramics can effectively enhance their piezoelectric properties while maintaining their insulating properties. During the polarization process, both the intrinsic polarization and defect dipoles are oriented along the direction of the electric field. This occurs in the presence of a high temperature environment as well as an applied electric field, which results in a complementary enhancement of the macroscopic ferro-and piezoelectric properties. Consequently, the piezoelectric performance of BF−BT−BKT ceramics is achieved (d 33 = 203 ± 5 pC/N, T C = 502 °C, k p = 33.05%). This work provides a framework for understanding the intrinsic structural mechanism of bismuth ferrate.

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Improved chemical defects and electrical properties of Li/Al co-doped BiFeO3-BaTiO3 lead-free ceramics

Cited by 3 publications

References 35 publications

Enhanced insulation and ferro/piezo-electric properties of BiFeO3–BaTiO3 via synchronous B-site co-doping and quenching treatment

Enhanced insulation and ferro/piezo-electric properties of BiFeO3–BaTiO3 via synchronous B-site co-doping and quenching treatment

Enhanced electrical properties and depolarization temperature of BF-BT ceramics via Mn2+ and Sc3+ Co-doping and direct reaction sintering

Enhanced Piezoelectric Response Attained by Defect Dipoles in BiFeO₃-based Lead-Free Ceramics

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Improved chemical defects and electrical properties of Li/Al co-doped BiFeO3-BaTiO3 lead-free ceramics

Cited by 3 publications

References 35 publications

Enhanced insulation and ferro/piezo-electric properties of BiFeO3–BaTiO3 via synchronous B-site co-doping and quenching treatment

Enhanced insulation and ferro/piezo-electric properties of BiFeO3–BaTiO3 via synchronous B-site co-doping and quenching treatment

Enhanced electrical properties and depolarization temperature of BF-BT ceramics via Mn2+ and Sc3+ Co-doping and direct reaction sintering

Enhanced Piezoelectric Response Attained by Defect Dipoles in BiFeO3-based Lead-Free Ceramics

Contact Info

Product

Resources

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Enhanced Piezoelectric Response Attained by Defect Dipoles in BiFeO₃-based Lead-Free Ceramics