Highly temperature-stable piezoelectric properties of 0.96(K0.48Na0.52)(Nb0.96Sb0.04)O3–0.03BaZrO3–0.01(Bi0.50Na0.50)ZrO3 ceramic in common usage temperature range. (15th March 2019)

• Record Type: Journal Article
• Authors: Zhou, Chunming; Zhang, Jialiang; Yao, Weizeng; Liu, Dakang; Su, Wenbin
• Is Part Of: Scripta materialia. Number 162(2019)
• Page Start: 86
• Page End: 89
• Publication Date: 2019-03-15
• Subjects: KNN-based ceramics -- Orthorhombic phase -- Temperature dependence -- Phase transitions -- Microstructure; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.10.048
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Piezoelectric temperature stability is often a critical issue for the (K, Na)NbO3 -based lead-free ceramics when used in some technical products like filters and ultrasonic devices. In this letter, we report the excellent piezoelectric performance of a dense 0.96(K0.48 Na0.52 )(Nb0.96 Sb0.04 )O3 –0.03BaZrO3 –0.01(Bi0.50 Na0.50 )ZrO3 ceramic, which shows high piezoelectric coefficient d 33 = 300 pC/N and large electromechanical coupling factors k p = 0.56, k 33 = 0.69 at room temperature and weak piezoelectric temperature dependences in the common usage temperature range between −30 °C and 100 °C. It seems that the obtained excellent piezoelectric performance associates closely with the diffused R - O phase transition and the stable piezoelectric nature of orthorhombic phase. Graphical abstract: Unlabelled Image