(K0.5Na0.5)NbO3 lead-free ceramics with improved piezoelectricity and field-induced strain

Rongxia Huang; Yongjie Zhao; Dong Yan

doi:10.1016/j.ceramint.2018.09.275

(K_0.5Na_0.5)NbO₃ lead-free ceramics with improved piezoelectricity and field-induced strain

Rongxia Huang^*, Yongjie Zhao, Dong Yan

^*Corresponding author for this work

School of Material Science and Engineering

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

The sintering additive 0.4ZnO-0.6B₂O₃ (abbreviated as ZnB) was proposed to improve the sintering behavior of (K,Na)NbO₃ ceramics. The influence of ZnB on the microstructure and electrical properties of (K,Na)NbO₃ ceramics was carefully investigated in detail. Results demonstrated that during the sintering process a liquid phase can form at a relative low temperature, which could favor and accelerate the densification of (K,Na)NbO₃ ceramics. Moreover, it was found that (K,Na)NbO₃ ceramics with 1.2 wt% ZnB exhibited excellent properties with the piezoelectric constant of d₃₃ = 134 pC/N and planar electromechanical coupling coefficient of k_p = 40%. Moreover, the field induced strain of 0.135@5 kV/mm was also achieved with this composition. Meanwhile, the mechanism for this enhancement of property was discussed.

Original language	English
Pages (from-to)	1450-1454
Number of pages	5
Journal	Ceramics International
Volume	45
Issue number	1
DOIs	https://doi.org/10.1016/j.ceramint.2018.09.275
Publication status	Published - Jan 2019

Keywords

Ferroelectric property
Piezoelectric property
Sintering behavior
Strain property

Access to Document

10.1016/j.ceramint.2018.09.275

Cite this

@article{bb50053dc720476091733c7b8c9bd7e4,

title = "(K0.5Na0.5)NbO3 lead-free ceramics with improved piezoelectricity and field-induced strain",

abstract = "The sintering additive 0.4ZnO-0.6B2O3 (abbreviated as ZnB) was proposed to improve the sintering behavior of (K,Na)NbO3 ceramics. The influence of ZnB on the microstructure and electrical properties of (K,Na)NbO3 ceramics was carefully investigated in detail. Results demonstrated that during the sintering process a liquid phase can form at a relative low temperature, which could favor and accelerate the densification of (K,Na)NbO3 ceramics. Moreover, it was found that (K,Na)NbO3 ceramics with 1.2 wt% ZnB exhibited excellent properties with the piezoelectric constant of d33 = 134 pC/N and planar electromechanical coupling coefficient of kp = 40%. Moreover, the field induced strain of 0.135@5 kV/mm was also achieved with this composition. Meanwhile, the mechanism for this enhancement of property was discussed.",

keywords = "Ferroelectric property, Piezoelectric property, Sintering behavior, Strain property",

author = "Rongxia Huang and Yongjie Zhao and Dong Yan",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd and Techna Group S.r.l.",

year = "2019",

month = jan,

doi = "10.1016/j.ceramint.2018.09.275",

language = "English",

volume = "45",

pages = "1450--1454",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd.",

number = "1",

}

TY - JOUR

T1 - (K0.5Na0.5)NbO3 lead-free ceramics with improved piezoelectricity and field-induced strain

AU - Huang, Rongxia

AU - Zhao, Yongjie

AU - Yan, Dong

PY - 2019/1

Y1 - 2019/1

N2 - The sintering additive 0.4ZnO-0.6B2O3 (abbreviated as ZnB) was proposed to improve the sintering behavior of (K,Na)NbO3 ceramics. The influence of ZnB on the microstructure and electrical properties of (K,Na)NbO3 ceramics was carefully investigated in detail. Results demonstrated that during the sintering process a liquid phase can form at a relative low temperature, which could favor and accelerate the densification of (K,Na)NbO3 ceramics. Moreover, it was found that (K,Na)NbO3 ceramics with 1.2 wt% ZnB exhibited excellent properties with the piezoelectric constant of d33 = 134 pC/N and planar electromechanical coupling coefficient of kp = 40%. Moreover, the field induced strain of 0.135@5 kV/mm was also achieved with this composition. Meanwhile, the mechanism for this enhancement of property was discussed.

AB - The sintering additive 0.4ZnO-0.6B2O3 (abbreviated as ZnB) was proposed to improve the sintering behavior of (K,Na)NbO3 ceramics. The influence of ZnB on the microstructure and electrical properties of (K,Na)NbO3 ceramics was carefully investigated in detail. Results demonstrated that during the sintering process a liquid phase can form at a relative low temperature, which could favor and accelerate the densification of (K,Na)NbO3 ceramics. Moreover, it was found that (K,Na)NbO3 ceramics with 1.2 wt% ZnB exhibited excellent properties with the piezoelectric constant of d33 = 134 pC/N and planar electromechanical coupling coefficient of kp = 40%. Moreover, the field induced strain of 0.135@5 kV/mm was also achieved with this composition. Meanwhile, the mechanism for this enhancement of property was discussed.

KW - Ferroelectric property

KW - Piezoelectric property

KW - Sintering behavior

KW - Strain property

UR - http://www.scopus.com/inward/record.url?scp=85054125676&partnerID=8YFLogxK

U2 - 10.1016/j.ceramint.2018.09.275

DO - 10.1016/j.ceramint.2018.09.275

M3 - Article

AN - SCOPUS:85054125676

SN - 0272-8842

VL - 45

SP - 1450

EP - 1454

JO - Ceramics International

JF - Ceramics International

IS - 1

ER -

(K_0.5Na_0.5)NbO₃ lead-free ceramics with improved piezoelectricity and field-induced strain

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this