Amphoteric Yb³⁺ and Dy³⁺ co-doped 0.5BaTi_0.8Zr_0.2O₃-0.5Ba_0.7Ca_0.3TiO₃ lead-free high piezoelectric ceramics influenced by defect dipoles

【作者】 田永尚； 曹丽嘉； 刘鹏； 井强山；

【Author】 Yongshang Tian;Lijia Cao;Peng Liu;Qiangshan Jing;College of Chemistry and Chemical Engineering, Henan Key Laboratory of Utilization of Non-Metallic Mineral in the South of Henan, Xinyang Normal University;

【机构】 College of Chemistry and Chemical Engineering, Henan Key Laboratory of Utilization of Non-Metallic Mineral in the South of Henan, Xinyang Normal University；

【摘要】 Co-doping of piezoelectric ceramics by amphoteric rare earth ions has resulted in synergistic improvement of their electrical properties.Amphoteric Yb³⁺and Dy³⁺co-doped BCT-BZT nanoparticles and ceramics showed high piezoelectric response and low activation energy were studied.The relationships of the defect dipole-induced electrical properties or/and activation energy with internal stress,structure distortions,and impurity phase were deduced.The optimum piezoelectric coefficient (d₃₃*=683 pm/V) indicated that the ceramics were suitable for practical applications.更多还原

【Abstract】 Co-doping of piezoelectric ceramics by amphoteric rare earth ions has resulted in synergistic improvement of their electrical properties.Amphoteric Yb³⁺and Dy³⁺co-doped BCT-BZT nanoparticles and ceramics showed high piezoelectric response and low activation energy were studied.The relationships of the defect dipole-induced electrical properties or/and activation energy with internal stress,structure distortions,and impurity phase were deduced.The optimum piezoelectric coefficient (d₃₃*=683 pm/V) indicated that the ceramics were suitable for practical applications.更多还原