The achieving enhanced piezoelectric performance of KNN-based ceramics: Decisive role of multi-phase coexistence induced by lattice distortion

P Jia, Z Zheng, Y Li, Z Li, T Liu, Y Wang - Journal of Alloys and Compounds, 2023 - Elsevier
Multi-phase coexistence induced by phase boundary regulation is an efficient approach to
promote the performance of (K, Na) NbO 3 ceramics. Here,[(1-x)(K 0.5 Na 0.5)(Nb 0.965 Sb …

Deciphering the structural heterogeneity behaviors of (K, Na) NbO3-based piezoelectric ceramics with multi-scale analyses

Y Li, A Cui, K Dai, Y Yan, K Jiang, L Shang, L Zhu, Y Li… - Acta Materialia, 2024 - Elsevier
Inducing local structural heterogeneity is one of the most attractive strategies to enhance the
piezoelectricity in lead-free piezoceramics, while the underlying mechanisms have not been …

Phase structure, domain structure, thermal stability, and high-temperature piezoelectric response of BiFeO3–BaTiO3 lead-free piezoelectric ceramics

S Guan, H Yang, S Cheng, X Wang, Y Sun, X Yang… - Ceramics …, 2024 - Elsevier
High-temperature lead-free piezoceramics with a large piezoelectric constant d 33 and a
high depolarization temperature T d have long been a target of ferroelectric researchers. In …

Grain size engineered K0.5Na0.5NbO3 ceramic with enhanced piezoelectric properties by introducing Zn additive

P Gao, X Huang, C Liu, R Zhang, X Chen, P Lei… - Journal of Materials …, 2023 - Springer
Developing lead-free piezoelectric materials is crucial for replacing lead-contained materials
in electronics. In this study, we address the challenges of low breakdown strength and poor …

Selection and optimization of Sb and Ta co-doped (K0.41Na0.59)(Nb1-xySbxTay)O3 lead-free ceramics

LTU Tu, NT Tho - Journal of Materials Science: Materials in Electronics, 2023 - Springer
Abstract Lead-(K0. 41Na0. 59)(Nb1-x-ySbxTay) O3 (abbreviated as KNNST) ceramics with
x= 0.0–0.15 and y= 0.0–0.2 were successfully synthesized and thoroughly investigated. The …

High Piezoelectric Performance in Undoped (K,Na)NbO3 Piezoceramics over a Wide Range of Compositions

L Vaschalde, EG Víllora, K Shimamura - Inorganic Chemistry, 2023 - ACS Publications
In a previous study, an optimized low-temperature (LT) sintering process for the preparation
of high-performance undoped (K, Na) NbO3 (KNN) ceramics with high density, high …

Processing, microstructure, electrical properties and cytotoxic behaviour of lead-free 0.99 K0. 5Na0. 5NbO3-0.01 BiFeO3 piezoceramics prepared using Spark Plasma …

A Iacomini, S Garroni, M Mureddu, L Malfatti… - Journal of Solid State …, 2022 - Elsevier
In this work,“lead free” 0.99 K 0.5 Na 0.5 NbO 3-0.01 BiFeO 3 (KNN–BF) piezoceramics
were prepared by a combination of mechanochemical activation, Spark Plasma Sintering …

KNN‐Based Hybrid Piezoelectric Materials

SW Ali, S Banerjee, C Shee… - Hybrid Materials for …, 2024 - Wiley Online Library
Apprehending an energy crisis in the near future, energy harvesting has now become a
topic of extensive research. Piezoelectric materials have been widely studied for small‐scale …

Piezoelectric energy transduction: materials, diverse applications, and challenges

S Banerjee, C Shee, S Bairagi, BB Xu… - Recent Advances in …, 2024 - iopscience.iop.org
Chapter 4 explores the fundamental concept of piezoelectricity and its underlying
mechanisms. It then examines various classes of piezoelectric materials in detail. The …

Capacitive and Resistive Properties of Molten Salt Synthesized Lead-Free K1/2Na1/2NbO3 Ceramic

DS Chakram, VR Reddy, SN Kumar… - Journal of Inorganic and …, 2023 - Springer
Abstract Lead-free K1/2Na1/2NbO3 (KNN) powder was synthesized using the molten-salt
process in the eutectic mixture of KCl–NaCl at a low temperature of 700℃ for 2 h, which is …