Defect dipole-modified KNN lead-free piezoceramics

Giant strain & fatigue recovery

Defect-engineered polymorphic phase transition enables giant piezoelectric strain and fatigue-induced strain recoverability in a lead-free KNN system, offering a new material for reliable large-stroke actuators.

Wang, Binquan · Huangfu, Geng · Wang, Jie · Li, Hua · Guo, Yiping

Advanced Functional Materials 2023

Specifications

基压电陶瓷压电应变系数

{'zh': '3080', 'en': ''} pm V⁻¹

Advantages

Recovery from fatigue-induced strain depletion under bipolar electric fields

Li/Sr-doped (K0.5Na0.5)NbO3 ceramics