Electromechanical coupling coefficient

Engineering

Statistics

Materials science

Geomorphology

Ceramic

Lead titanate

Lead zirconate titanate

Actuator

Energy (signal processing)

Lead (geology)

Energy harvesting

Acoustics

Ferroelectricity

Geology

Transducer

Physics

Ferroelectric ceramics

Dielectric

Mathematics

Composite material

Piezoelectricity

Optoelectronics

Electrical engineering

Advanced Functional Materials

Lead zirconate titanate (PZT)‐based piezoelectric ceramics are important functional materials for various electromechanical applications, including sensors, actuators, and transducers. High piezoelectric coefficient and mechanical quality factor are essential for the resonant piezoelectric application. However, since these properties are often inversely proportional, simultaneously high performances are hard to achieve, consequently, a wide range of applications are strongly restricted. In the present study, exceptionally well‐balanced performances are achieved in PZT‐based ceramics via innovative defect engineering, which involves multi‐scale coordination among defect dipole, domain‐wall density, and grain boundary. These materials are superior to many state‐of‐the‐art commercial counterparts, which can potentially satisfy high‐end requirements for advanced electromechanical applications, such as energy harvesting, structural health monitoring, robotic sensors, and actuator.

Defect Engineering in Lead Zirconate Titanate Ferroelectric Ceramic for Enhanced Electromechanical Transducer Efficiency