材料科学
压电
居里温度
陶瓷
环境友好型
兴奋剂
谐振器
超声波传感器
光电子学
声学
复合材料
铁磁性
凝聚态物理
生态学
物理
生物
作者
Liang Dong,Lifeng Zhu,Ting Tang,Jingrui Li,Long Wang,Yixuan Liu,Cunguang Chen,Shidong Wang,Ke Wang
标识
DOI:10.1021/acsami.3c16488
摘要
Potassium sodium niobate (KNN) lead-free piezoceramics have garnered significant attention for their environmentally friendly attributes, desired piezoelectric activity (d33), and high Curie temperature (Tc). However, the limited applicability of most KNN systems in high-power apparatus, including ultrasonic motors, transformers, and resonators, persists due to the inherent low mechanical quality factor (Qm). Herein, we proposed an innovative strategy for achieving high Qm accompanied by desirable d33 via synergistic chemical doping and texturing in KNN piezoceramics. Comprehensive electrical measurements along with quantitative structural characterization at multilength scales reveal that the excellent electromechanical properties (kp = 0.58, d33 ∼ 134 pC·N-1, Qm = 582, and Tc ∼ 415 °C) originate from the high <001> texturing degree, nanodomain, as well as acceptor hardening. Our findings provide an insight and guidance for achieving high-power performance in lead-free KNN-based piezoceramics, which were expected to be used in advanced transducer technology.
科研通智能强力驱动
Strongly Powered by AbleSci AI