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

Abstract

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.

Multiple property enhancement in bismuth ferrite‐based ferroelectrics by balancing nanodomain and relaxor state

“…Totally different conduction mechanism can be realized in BNT‐based ceramics via A‐site nonstoichiometry 20 . Enhanced electromechanical transducer efficiency has been achieved in lead zirconate titanate (PZT)‐based ceramics by Mn doping 21 . For bulk ferroelectrics, the addition of oxides has been verified to be the most simple and flexible approach to engineer defects 22–27 .…”

“…20 Enhanced electromechanical transducer efficiency has been achieved in lead zirconate titanate (PZT)-based ceramics by Mn doping. 21 For bulk ferroelectrics, the addition of oxides has been verified to be the most simple and flexible approach to engineer defects. [22][23][24][25][26][27] Therefore, different kinds of oxides (CuO, MnO 2 , and CeO 2 ) have been selected here to manipulate the domain configuration and relaxor state in BF-BT-based ceramics.…”

Model-Based Dielectric Constant Estimation of Polymeric Nanocomposite

“…Therefore, much research has been focusing on how to improve the performance of energy storage materials, especially dielectric energy storage materials [ 8 , 9 ]. Ceramic dielectric nanoparticles, such as barium titanate (BT) [ 10 ], lead zirconate titanate (PZT) [ 11 ], barium strontium titanate (BST) [ 12 ] and copper calcium titanate (CCTO) [ 13 ], which have a high dielectric constant and excellent anti-aging properties [ 14 , 15 , 16 ], are one of the most common used dielectric materials in energy storge. However, there are several shortcomings that limit the application of ceramic dielectric nanoparticles, for instance, the high sintering temperature, complex preparation process, poor flexibility, high dielectric loss and low electrical strength [ 17 , 18 , 19 ].…”

Giant strains of 0.5% accompanying polarization extension and polarization rotation in (Bi0.5Na0.5)TiO3–PbTiO3–Pb(Zn1/3Nb2/3)O3 ternary system

“…Ferroelectric ceramics have been widely used as actuators, sensors, and transducers in the last several decades [1,2]. The commercial Pb(Zr,Ti)O 3 (PZT)based ferroelectric ceramics have been widely used in electromechanical devices due to their excellent piezoelectric and electromechanical properties [3][4][5]. However, they usually have relatively low electrostrain \ 0.2%.…”