Low-temperature sintering of ZnO and B2O3 Co-doped (K0.5Na0.5)NbO3 lead-free piezoelectric ceramics

Rongxia Huang; Yuzhen Zhao; Yongjie Zhao; Rongzheng Liu; Heping Zhou

doi:10.4028/www.scientific.net/MSF.687.315

Low-temperature sintering of ZnO and B₂O₃ Co-doped (K_0.5Na_0.5)NbO₃ lead-free piezoelectric ceramics

Rongxia Huang^*, Yuzhen Zhao, Yongjie Zhao, Rongzheng Liu, Heping Zhou

^*Corresponding author for this work

Tsinghua University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Citations (Scopus)

Abstract

Lead-free K_0.5Na_0.5NbO₃-xwt% (0.4ZnO-0.6B₂O₃) ceramics were synthesized by conventional ceramics process. The co-doping of ZnO and B₂O₃ can decrease the sintering temperature of K_0.5Na_0.5NbO ₃ ceramics to 1000°C, and the samples show high relative density around 96%. X-ray diffraction (XRD) reveals that Co-doping of ZnO and B ₂O₃ induces lattice distortion. Liquid phase is observed by scanning electron microscopy (SEM), which is resulted from the addition of ZnO and B₂O₃. The ceramics show better piezoelectric and dielectric properties with planar electromechanical coupling factor k _p= 40.7%, piezoelectric constant d₃₃=117pC/N, dielectric constant ε₃₃^T/ε₀=318.6, and loss tangent tanδ=0.034.

Original language	English
Title of host publication	Functional and Electronic Materials
Publisher	Trans Tech Publications Ltd.
Pages	315-320
Number of pages	6
ISBN (Print)	9783037851692
DOIs	https://doi.org/10.4028/www.scientific.net/MSF.687.315
Publication status	Published - 2011
Externally published	Yes

Publication series

Name	Materials Science Forum
Volume	687
ISSN (Print)	0255-5476
ISSN (Electronic)	1662-9752

Keywords

Co-doped
KNN
Lead free piezoelectric ceramics
Low temperature sintering

Access to Document

10.4028/www.scientific.net/MSF.687.315

Cite this

@inproceedings{b32be7922f104588852d6d13f71a977a,

title = "Low-temperature sintering of ZnO and B2O3 Co-doped (K0.5Na0.5)NbO3 lead-free piezoelectric ceramics",

abstract = "Lead-free K0.5Na0.5NbO3-xwt% (0.4ZnO-0.6B2O3) ceramics were synthesized by conventional ceramics process. The co-doping of ZnO and B2O3 can decrease the sintering temperature of K0.5Na0.5NbO 3 ceramics to 1000°C, and the samples show high relative density around 96%. X-ray diffraction (XRD) reveals that Co-doping of ZnO and B 2O3 induces lattice distortion. Liquid phase is observed by scanning electron microscopy (SEM), which is resulted from the addition of ZnO and B2O3. The ceramics show better piezoelectric and dielectric properties with planar electromechanical coupling factor k p= 40.7%, piezoelectric constant d33=117pC/N, dielectric constant ε33T/ε0=318.6, and loss tangent tanδ=0.034.",

keywords = "Co-doped, KNN, Lead free piezoelectric ceramics, Low temperature sintering",

author = "Rongxia Huang and Yuzhen Zhao and Yongjie Zhao and Rongzheng Liu and Heping Zhou",

year = "2011",

doi = "10.4028/www.scientific.net/MSF.687.315",

language = "English",

isbn = "9783037851692",

series = "Materials Science Forum",

publisher = "Trans Tech Publications Ltd.",

pages = "315--320",

booktitle = "Functional and Electronic Materials",

address = "Switzerland",

}

Low-temperature sintering of ZnO and B₂O₃ Co-doped (K_0.5Na_0.5)NbO₃ lead-free piezoelectric ceramics. / Huang, Rongxia; Zhao, Yuzhen; Zhao, Yongjie et al.
Functional and Electronic Materials. Trans Tech Publications Ltd., 2011. p. 315-320 (Materials Science Forum; Vol. 687).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Low-temperature sintering of ZnO and B2O3 Co-doped (K0.5Na0.5)NbO3 lead-free piezoelectric ceramics

AU - Huang, Rongxia

AU - Zhao, Yuzhen

AU - Zhao, Yongjie

AU - Liu, Rongzheng

AU - Zhou, Heping

PY - 2011

Y1 - 2011

N2 - Lead-free K0.5Na0.5NbO3-xwt% (0.4ZnO-0.6B2O3) ceramics were synthesized by conventional ceramics process. The co-doping of ZnO and B2O3 can decrease the sintering temperature of K0.5Na0.5NbO 3 ceramics to 1000°C, and the samples show high relative density around 96%. X-ray diffraction (XRD) reveals that Co-doping of ZnO and B 2O3 induces lattice distortion. Liquid phase is observed by scanning electron microscopy (SEM), which is resulted from the addition of ZnO and B2O3. The ceramics show better piezoelectric and dielectric properties with planar electromechanical coupling factor k p= 40.7%, piezoelectric constant d33=117pC/N, dielectric constant ε33T/ε0=318.6, and loss tangent tanδ=0.034.

AB - Lead-free K0.5Na0.5NbO3-xwt% (0.4ZnO-0.6B2O3) ceramics were synthesized by conventional ceramics process. The co-doping of ZnO and B2O3 can decrease the sintering temperature of K0.5Na0.5NbO 3 ceramics to 1000°C, and the samples show high relative density around 96%. X-ray diffraction (XRD) reveals that Co-doping of ZnO and B 2O3 induces lattice distortion. Liquid phase is observed by scanning electron microscopy (SEM), which is resulted from the addition of ZnO and B2O3. The ceramics show better piezoelectric and dielectric properties with planar electromechanical coupling factor k p= 40.7%, piezoelectric constant d33=117pC/N, dielectric constant ε33T/ε0=318.6, and loss tangent tanδ=0.034.

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KW - KNN

KW - Lead free piezoelectric ceramics

KW - Low temperature sintering

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