Superior Piezoelectric Properties in Potassium-Sodium Niobate Lead-Free Ceramics

Kai Xu, Jun Li, Xiang Lv, Jiagang Wu, Xixiang Zhang, Dingquan Xiao, Jianguo Zhu

Research output: Contribution to journalArticlepeer-review

406 Scopus citations


A superior piezoelectric coefficient (d33 = 570 ± 10 pC N"1 ), the highest value reported to date in potassium-sodium niobate-based ceramics, is obtained in (1-x-y)K1-w Naw Nb1-z Sbz O3-y BaZrO3-x - Bi0.5 K0.5 HfO3 ceramics. This high d33 value can be ascribed to the co-existence of "nano-scale strain domains" (1-2 nm) and a high density of ferroelectric domain boundaries. Therefore, ternary KNN-based ceramics demonstrate the potential for applications.
Original languageEnglish (US)
Pages (from-to)8519-8523
Number of pages5
JournalAdvanced Materials
Issue number38
StatePublished - Jul 21 2016


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