Multiscale Structural Engineering Boosts Piezoelectricity in Na0.5Bi2.5Nb2O9-Based High-Temperature Piezoceramics

• DOI: 10.1021/acsami.4c00629
• Publication Date: 2024-04-02T15:39:15Z
• Authors: Juan Wang; Wenying Fan; Shao-Dong Cheng; Shidong Wang; Yuqi Jiang; Geng Li; Min Ju; Binglin Shen; Binjie Chen; Zhongshang Dou; Wen Gong; Fang-Zhou Yao; Ke Wang

High-temperature piezoelectric materials, which enable the accurate and reliable sensing of physical parameters to guarantee functional operation various systems under harsh conditions, are highly demanded. To this end, both large piezoelectricity high Curie temperature pivotal figures merit (FOMs) for high-temperature piezoceramics. Unfortunately, despite intensive pursuits, it remains a formidable challenge unravel inverse correlation between these FOMs. Herein, conceptual material paradigm multiscale structural engineering was proposed address dilemma. The synergistic effects phase structure reminiscent polymorphic boundary refined domain morphology simultaneously contribute coefficient d33 30.3 pC/N TC 740 °C in (LiCeNd) codoped Na0.5Bi2.5Nb2O9 (NBN-LCN) ceramics. More encouragingly, system has exceptional thermal stability is nonsusceptible mechanical loading. This study not only demonstrates that high-performance robust NBN-LCN piezoceramics hold great potential implements conditions but also opens an avenue integrating antagonistic properties enhancement collective performance materials.