Ultrahigh electro-strain in acceptor-doped KNN lead-free piezoelectric ceramics via defect engineering

• Published in: Acta materialia Vol. 200; pp. 35 - 41
• Main Authors: Zhao, Zhihao, Lv, Yukai, Dai, Yejing, Zhang, Shujun
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.11.2020
• Subjects: (K0.5N0.5)NbO3; Defect engineering; Electro-strain; Lead-free piezoelectric ceramics; Electro-strain; Defect engineering; (K0.5N0.5)NbO3; Lead-free piezoelectric ceramics

Defect dipoles in acceptor-doped perovskite-based ferroelectric ceramics play an important role in piezoelectric properties. In this work, the acceptor, such as Fe2+ and Cu+, -doped (K0.5N0.5)NbO3 (KNN) ceramics are fabricated in reduced atmosphere by the conventional solid-state reaction method. By...