Effect of Li2O and CuO additives on the structural and piezoelectric properties of (Na0.5K0.5)(Nb 0.96Sb0.04)O3 lead-free piezoelectric ceramics

Min Kyu Choi; Hwi Yeol Park; In Tae Seo; Jae Hong Choi; Woong Kim; Sahn Nahm; Hwack Joo Lee

doi:10.1016/j.cap.2010.10.005

Effect of Li₂O and CuO additives on the structural and piezoelectric properties of (Na_0.5K_0.5)(Nb _0.96Sb_0.04)O₃ lead-free piezoelectric ceramics

Min Kyu Choi, Hwi Yeol Park, In Tae Seo, Jae Hong Choi, Woong Kim, Sahn Nahm, Hwack Joo Lee

Department of Materials Science and Engineering

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

6 Citations (Scopus)

Abstract

[(Na_0.5K_0.5)_1-xLi_x](Nb _0.96Sb_0.04)O₃ [NKLNS100x] ceramics with 0.0 ≤ x ≤ 0.1 were sintered at 1040 °C for 2 h and the specimens with x ≥ 0.05 had a dense microstructure due to liquid phase sintering. The specimen with x = 0.05 had both orthorhombic and tetragonal phases, and showed good piezoelectric properties of k_p = 0.43, d₃₃ = 243 pC/N and ε₃₃^T/ε₀ = 990. The [(Na _0.5K_0.5)_0.95Li_0.05](Nb _0.96Sb_0.04)O₃ [NKLNS5] ceramics sintered at 960 °C also showed a high density by the addition of CuO, due to the production of the CuO and Na₂O-related liquid phase. The Cu²⁺ ions were considered to replace Nb⁵⁺ ions and act as a hardener, which increased the Q_m value of the NKLNS5 ceramics. High piezoelectric properties of k_p = 0.37, Q_m = 560, ε ₃₃^T/ε₀ = 600 and d₃₃ = 170 pC/N were obtained from the specimen containing 1.5 mol% of CuO sintered at 960 °C for 2 h.

Original language	English
Pages (from-to)	598-603
Number of pages	6
Journal	Current Applied Physics
Volume	11
Issue number	3
DOIs	https://doi.org/10.1016/j.cap.2010.10.005
Publication status	Published - 2011 May

Keywords

Ceramics
Electron energy loss spectroscopy (EELS)
Microstructure
Piezoelectricity

ASJC Scopus subject areas

Materials Science(all)
Physics and Astronomy(all)

Access to Document

10.1016/j.cap.2010.10.005

Cite this

@article{72a08fb7002846699c1b434921b85cf5,

title = "Effect of Li2O and CuO additives on the structural and piezoelectric properties of (Na0.5K0.5)(Nb 0.96Sb0.04)O3 lead-free piezoelectric ceramics",

abstract = "[(Na0.5K0.5)1-xLix](Nb 0.96Sb0.04)O3 [NKLNS100x] ceramics with 0.0 ≤ x ≤ 0.1 were sintered at 1040 °C for 2 h and the specimens with x ≥ 0.05 had a dense microstructure due to liquid phase sintering. The specimen with x = 0.05 had both orthorhombic and tetragonal phases, and showed good piezoelectric properties of kp = 0.43, d33 = 243 pC/N and ε33T/ε0 = 990. The [(Na 0.5K0.5)0.95Li0.05](Nb 0.96Sb0.04)O3 [NKLNS5] ceramics sintered at 960 °C also showed a high density by the addition of CuO, due to the production of the CuO and Na2O-related liquid phase. The Cu2+ ions were considered to replace Nb5+ ions and act as a hardener, which increased the Qm value of the NKLNS5 ceramics. High piezoelectric properties of kp = 0.37, Qm = 560, ε 33T/ε0 = 600 and d33 = 170 pC/N were obtained from the specimen containing 1.5 mol% of CuO sintered at 960 °C for 2 h.",

keywords = "Ceramics, Electron energy loss spectroscopy (EELS), Microstructure, Piezoelectricity",

author = "Choi, {Min Kyu} and Park, {Hwi Yeol} and Seo, {In Tae} and Choi, {Jae Hong} and Woong Kim and Sahn Nahm and Lee, {Hwack Joo}",

note = "Funding Information: This research was supported by a grant from the Center for Advanced Materials Processing (CAMP) of the 21st Century Frontier R&D Program funded by the Ministry of Intelligence and Economy, Republic of Korea .",

year = "2011",

month = may,

doi = "10.1016/j.cap.2010.10.005",

language = "English",

volume = "11",

pages = "598--603",

journal = "Current Applied Physics",

issn = "1567-1739",

publisher = "Elsevier",

number = "3",

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TY - JOUR

T1 - Effect of Li2O and CuO additives on the structural and piezoelectric properties of (Na0.5K0.5)(Nb 0.96Sb0.04)O3 lead-free piezoelectric ceramics

AU - Choi, Min Kyu

AU - Park, Hwi Yeol

AU - Seo, In Tae

AU - Choi, Jae Hong

AU - Kim, Woong

AU - Nahm, Sahn

AU - Lee, Hwack Joo

N1 - Funding Information: This research was supported by a grant from the Center for Advanced Materials Processing (CAMP) of the 21st Century Frontier R&D Program funded by the Ministry of Intelligence and Economy, Republic of Korea .

PY - 2011/5

Y1 - 2011/5

N2 - [(Na0.5K0.5)1-xLix](Nb 0.96Sb0.04)O3 [NKLNS100x] ceramics with 0.0 ≤ x ≤ 0.1 were sintered at 1040 °C for 2 h and the specimens with x ≥ 0.05 had a dense microstructure due to liquid phase sintering. The specimen with x = 0.05 had both orthorhombic and tetragonal phases, and showed good piezoelectric properties of kp = 0.43, d33 = 243 pC/N and ε33T/ε0 = 990. The [(Na 0.5K0.5)0.95Li0.05](Nb 0.96Sb0.04)O3 [NKLNS5] ceramics sintered at 960 °C also showed a high density by the addition of CuO, due to the production of the CuO and Na2O-related liquid phase. The Cu2+ ions were considered to replace Nb5+ ions and act as a hardener, which increased the Qm value of the NKLNS5 ceramics. High piezoelectric properties of kp = 0.37, Qm = 560, ε 33T/ε0 = 600 and d33 = 170 pC/N were obtained from the specimen containing 1.5 mol% of CuO sintered at 960 °C for 2 h.

AB - [(Na0.5K0.5)1-xLix](Nb 0.96Sb0.04)O3 [NKLNS100x] ceramics with 0.0 ≤ x ≤ 0.1 were sintered at 1040 °C for 2 h and the specimens with x ≥ 0.05 had a dense microstructure due to liquid phase sintering. The specimen with x = 0.05 had both orthorhombic and tetragonal phases, and showed good piezoelectric properties of kp = 0.43, d33 = 243 pC/N and ε33T/ε0 = 990. The [(Na 0.5K0.5)0.95Li0.05](Nb 0.96Sb0.04)O3 [NKLNS5] ceramics sintered at 960 °C also showed a high density by the addition of CuO, due to the production of the CuO and Na2O-related liquid phase. The Cu2+ ions were considered to replace Nb5+ ions and act as a hardener, which increased the Qm value of the NKLNS5 ceramics. High piezoelectric properties of kp = 0.37, Qm = 560, ε 33T/ε0 = 600 and d33 = 170 pC/N were obtained from the specimen containing 1.5 mol% of CuO sintered at 960 °C for 2 h.

KW - Ceramics

KW - Electron energy loss spectroscopy (EELS)

KW - Microstructure

KW - Piezoelectricity

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