Microstructure and piezoelectric properties of CuO-doped 0.95(K0.5Na0.5)NbO3-0.05Li(Nb0.5Sb0.5)O3 lead-free ceramics

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

doi:10.1016/j.jeurceramsoc.2011.04.018

Microstructure and piezoelectric properties of CuO-doped 0.95(K_0.5Na_0.5)NbO₃-0.05Li(Nb_0.5Sb_0.5)O₃ lead-free ceramics

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

^*Corresponding author for this work

Tsinghua University

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

48 Citations (Scopus)

Abstract

The effects of sintering temperature and the addition of CuO on the microstructure and piezoelectric properties of 0.95(K_0.5Na_0.5)NbO₃-0.05Li(Nb_0.5Sb_0.5)O₃ were investigated. The KNN-5LNS ceramics doped with CuO were well sintered even at 940°C. A small amount of Cu²⁺ was incorporated into the KNN-5LNS matrix ceramics and XRD patterns suggested that the Cu²⁺ ion could enter the A or B site of the perovskite unit cell and replace the Nb⁵⁺ or Li⁺ simultaneously. The study also showed that the introduction of CuO effectively reduced the sintering temperature and improved the electrical properties of KNN-5LNS. The high piezoelectric properties of d₃₃=263pC/N, k_p=0.42, Q_m=143 and tanδ=0.024 were obtained from the 0.4mol% CuO doped KNN-5LNS ceramics sintered at 980°C for 2h.

Original language	English
Pages (from-to)	1939-1944
Number of pages	6
Journal	Journal of the European Ceramic Society
Volume	31
Issue number	11
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2011.04.018
Publication status	Published - 1 Oct 2011
Externally published	Yes

Keywords

CuO addition
KNN
Lead-free
Low temperature sintering
Piezoelectric properties

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10.1016/j.jeurceramsoc.2011.04.018

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title = "Microstructure and piezoelectric properties of CuO-doped 0.95(K0.5Na0.5)NbO3-0.05Li(Nb0.5Sb0.5)O3 lead-free ceramics",

abstract = "The effects of sintering temperature and the addition of CuO on the microstructure and piezoelectric properties of 0.95(K0.5Na0.5)NbO3-0.05Li(Nb0.5Sb0.5)O3 were investigated. The KNN-5LNS ceramics doped with CuO were well sintered even at 940°C. A small amount of Cu2+ was incorporated into the KNN-5LNS matrix ceramics and XRD patterns suggested that the Cu2+ ion could enter the A or B site of the perovskite unit cell and replace the Nb5+ or Li+ simultaneously. The study also showed that the introduction of CuO effectively reduced the sintering temperature and improved the electrical properties of KNN-5LNS. The high piezoelectric properties of d33=263pC/N, kp=0.42, Qm=143 and tanδ=0.024 were obtained from the 0.4mol% CuO doped KNN-5LNS ceramics sintered at 980°C for 2h.",

keywords = "CuO addition, KNN, Lead-free, Low temperature sintering, Piezoelectric properties",

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

year = "2011",

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doi = "10.1016/j.jeurceramsoc.2011.04.018",

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AU - Zhao, Yongjie

AU - Zhao, Yuzhen

AU - Huang, Rongxia

AU - Liu, Rongzheng

AU - Zhou, Heping

PY - 2011/10/1

Y1 - 2011/10/1

N2 - The effects of sintering temperature and the addition of CuO on the microstructure and piezoelectric properties of 0.95(K0.5Na0.5)NbO3-0.05Li(Nb0.5Sb0.5)O3 were investigated. The KNN-5LNS ceramics doped with CuO were well sintered even at 940°C. A small amount of Cu2+ was incorporated into the KNN-5LNS matrix ceramics and XRD patterns suggested that the Cu2+ ion could enter the A or B site of the perovskite unit cell and replace the Nb5+ or Li+ simultaneously. The study also showed that the introduction of CuO effectively reduced the sintering temperature and improved the electrical properties of KNN-5LNS. The high piezoelectric properties of d33=263pC/N, kp=0.42, Qm=143 and tanδ=0.024 were obtained from the 0.4mol% CuO doped KNN-5LNS ceramics sintered at 980°C for 2h.

AB - The effects of sintering temperature and the addition of CuO on the microstructure and piezoelectric properties of 0.95(K0.5Na0.5)NbO3-0.05Li(Nb0.5Sb0.5)O3 were investigated. The KNN-5LNS ceramics doped with CuO were well sintered even at 940°C. A small amount of Cu2+ was incorporated into the KNN-5LNS matrix ceramics and XRD patterns suggested that the Cu2+ ion could enter the A or B site of the perovskite unit cell and replace the Nb5+ or Li+ simultaneously. The study also showed that the introduction of CuO effectively reduced the sintering temperature and improved the electrical properties of KNN-5LNS. The high piezoelectric properties of d33=263pC/N, kp=0.42, Qm=143 and tanδ=0.024 were obtained from the 0.4mol% CuO doped KNN-5LNS ceramics sintered at 980°C for 2h.

KW - CuO addition

KW - KNN

KW - Lead-free

KW - Low temperature sintering

KW - Piezoelectric properties

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DO - 10.1016/j.jeurceramsoc.2011.04.018

M3 - Article

AN - SCOPUS:79957869253

SN - 0955-2219

VL - 31

SP - 1939

EP - 1944

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 11

ER -

Microstructure and piezoelectric properties of CuO-doped 0.95(K_0.5Na_0.5)NbO₃-0.05Li(Nb_0.5Sb_0.5)O₃ lead-free ceramics

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Keywords

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