Synergistic enhancement of piezoelectric performance and temperature stability of lead zirconate titanate ceramics
Year: 2026
Type: article
Abstract: The rapid advancement of modern electromechanical applications has imposed urgent demands for piezoelectric ceramics featuring both superior piezoelectric performance and a broad operational temperature range. Nevertheless, concurrently achieving high piezoelectricity and reliable thermal stability in lead zirconate titanate (PZT)‐based piezoceramics remains a herculean challenge. To address this issue, we designed a [Pb 0.99 Sm 0.01 ][(Zr 0.54 Ti 0.46 ) 1− x Ta x ]O 3 (PSZT‐ x Ta) ceramic system. By introducing defect dipoles via heterovalent ion doping in the perovskite ABO 3 lattice to suppress oxygen vacancies, we realized exceptional properties in the PSZT‐0.03Ta ceramics, including a Curie temperature ( T C ) of 334°C, a piezoelectric coefficient ( d 33 ) of 539 pC/N, and an electromechanical coupling factor ( k p ) of 0.63. These materials also exhibited excellent thermal stability, with d 33 varying by less than 10% from 18 to 188°C and k p and resonance frequency ( f r ) changing by only 3.5% and 2%, respectively, from 30 to 200°C. The synergism between high piezoelectricity and thermal stability arises from the synergistic interplay of multiple factors: The stable coexistence of tetragonal (T) and rhombohedral (R) phases at the morphotropic phase boundary, where the R phase contributes significant lattice distortion and volume expansion while the T phase ensures structural stability; A hierarchical domain structure comprising micrometer‐scale domains and nano‐stripe domains; Defect dipoles that effectively mitigate oxygen vacancy formation.
DOI: 10.1111/jace.70516
Authors: Weiling Wang, Wanfeng Zhuang, Zhongquan Cui, Ning Chen, Hong Liu, Jianguo Zhu
Institution: Sichuan University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W7119534564