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High Piezoelectricity and Stable Output in Alkali-Niobate-Based Lead-Free Ferroelectric Ceramics

30 Pages Posted: 14 Nov 2019 First Look: Under Review

See all articles by Peng Li

Peng Li

Tongji University - Key laboratory of Advanced Civil Engineering Materials

Zhengqian Fu

Chinese Academy of Sciences (CAS) - State Key Laboratory of High Performance Ceramics and Superfine Microstructure

Feifei Wang

Shanghai Normal University - Key Laboratory of Optoelectronic Material and Device

Yu Huan

University of Jinan - School of Material Science and Engineering

Zhiyong Zhou

Chinese Academy of Sciences (CAS) - Key Laboratory of Inorganic Functional Materials and Devices

Jiwei Zhai

Tongji University - Key laboratory of Advanced Civil Engineering Materials

Bo Shen

Tongji University - Key laboratory of Advanced Civil Engineering Materials

Shujun Zhang

University of Wollongong - Institute for Superconducting and Electronic Materials (ISEM)

Abstract

The applications of piezoelectric materials for electromechanical conversion devices require both high piezoelectric response with superior stability and reliability. In this work, BaHfO3 and (Bi0.5Na0.5)ZrO3 modified KNN based ceramics with high piezoelectric response (d33~490 ± 20 pC/N, d33*~860 pm/V) and good thermal stability (variation of d33* is below 12% over the temperature range of 25-180 oC) as well as cyclic reliability were achieved by integrating the strategies of phase boundary design and crystallographic texturing. The high piezoelectric response originated from three synergistic effects of R-T phase coexistence, piezoelectric anisotropy, and nanodomain configuration. Based on the in-situ temperature dependence of XRD and TEM analyses, we disclosed that the stable R-T phase coexistence and domain morphology over a wide temperature range contributed to the excellent thermal stability of piezoelectric properties. This work provides not only an effective strategy to simultaneously achieve high piezoelectricity and superior temperature stability, but also the in-depth understanding of the microstructure originality responsible for the stability and reliability in KNN based ceramics.

Keywords: Lead-free textured ceramics, High piezoresponse, Thermal stability, Fatigue resistance

Suggested Citation

Li, Peng and Fu, Zhengqian and Wang, Feifei and Huan, Yu and Zhou, Zhiyong and Zhai, Jiwei and Shen, Bo and Zhang, Shujun, High Piezoelectricity and Stable Output in Alkali-Niobate-Based Lead-Free Ferroelectric Ceramics. Available at SSRN: https://ssrn.com/abstract=3485085

Peng Li (Contact Author)

Tongji University - Key laboratory of Advanced Civil Engineering Materials

Shanghai
China

Zhengqian Fu

Chinese Academy of Sciences (CAS) - State Key Laboratory of High Performance Ceramics and Superfine Microstructure

1295 Dingxi Road
Shanghai, 200050
China

Feifei Wang

Shanghai Normal University - Key Laboratory of Optoelectronic Material and Device

China

Yu Huan

University of Jinan - School of Material Science and Engineering

China

Zhiyong Zhou

Chinese Academy of Sciences (CAS) - Key Laboratory of Inorganic Functional Materials and Devices

China

Jiwei Zhai

Tongji University - Key laboratory of Advanced Civil Engineering Materials

Shanghai
China

Bo Shen

Tongji University - Key laboratory of Advanced Civil Engineering Materials

Shanghai
China

Shujun Zhang

University of Wollongong - Institute for Superconducting and Electronic Materials (ISEM) ( email )

Wollongong, NSW 2500
Australia

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