Work

High piezoelectric properties and excellent thermal stability in PNN‐modified lead zirconate titanate piezoceramics

Year: 2025

Type: article

Abstract: To date, lead‐based piezoelectric ceramics continue to be extensively utilized and studied as essential functional materials in various electromechanical applications. Achieving a combination of high piezoelectric coefficients, excellent mechanical quality factors, and thermal stability is critical for resonant piezoelectric systems, yet advancements in optimizing these properties remain a significant challenge. Here, defect engineering based on chemical composition modulation was used to prepare lead‐based 0.06Pb(Ni 1/3 Nb 2/3 )O 3 ‒0.94[0.05Pb(Mn 1/3 Sb 2/3 )‒0.95Pb(Zr 0.48 Ti 0.52 )O 3 ] ceramics, overcoming the performance‐limiting negative correlation. This led to an enhancement in piezoelectric performance ( d 33 = 462 pC/N, Q m = 1717) without significant sacrifice of mechanical quality factor, along with low loss (tan δ = 0.24%) and high Curie temperature ( T c = 322°C). The advanced piezoelectric temperature stability is confirmed by a d 33 value variation of only 2.17% as the temperature increased from 25°C to 200°C, surpassing many advanced commercial lead‐based materials (PZT‐5A). This work demonstrates significant progress in the comprehensive performance and temperature stability of lead‐based piezoelectric ceramics, achieving a well‐balanced performance and stimulating further efforts toward high‐temperature piezoelectric applications.

Source: Journal of the American Ceramic Society

DOI: 10.1111/jace.20643