Low-temperature sintering and piezoelectric properties of (Na 0.5K0.5)NbO3 lead-free piezoelectric ceramics

Hwi Yeol Park; In Tae Seo; Jae Hong Choi; Sahn Nahm; Hyeung Gyu Lee

doi:10.1111/j.1551-2916.2009.03359.x

Low-temperature sintering and piezoelectric properties of (Na _0.5K_0.5)NbO₃ lead-free piezoelectric ceramics

Hwi Yeol Park, In Tae Seo, Jae Hong Choi, Sahn Nahm, Hyeung Gyu Lee

Department of Materials Science and Engineering

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

40 Citations (Scopus)

Abstract

(Na_0.5K_0.5)NbO₃ (NKN) ceramic with 1.5 mol% CuO added (NKNC) was well sintered even at a low temperature of 900°C with the addition of ZnO. Most of the ZnO reacted with the CuO and formed the liquid phase that assisted the densification of the specimens at 900°C. A few Zn²⁺ ions entered the matrix of the specimens and increased the coercive field (E_c) and Q_m values of the specimens. High-piezoelectric properties of k_p=0.37, Q_m=755, and ε₃^T/ε₀=327 were obtained from the NKNC ceramics containing 1.0 mol% ZnO sintered at 900°C for 2 h.

Original language	English
Pages (from-to)	36-39
Number of pages	4
Journal	Journal of the American Ceramic Society
Volume	93
Issue number	1
DOIs	https://doi.org/10.1111/j.1551-2916.2009.03359.x
Publication status	Published - 2010 Jan

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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10.1111/j.1551-2916.2009.03359.x

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abstract = "(Na0.5K0.5)NbO3 (NKN) ceramic with 1.5 mol% CuO added (NKNC) was well sintered even at a low temperature of 900°C with the addition of ZnO. Most of the ZnO reacted with the CuO and formed the liquid phase that assisted the densification of the specimens at 900°C. A few Zn2+ ions entered the matrix of the specimens and increased the coercive field (Ec) and Qm values of the specimens. High-piezoelectric properties of kp=0.37, Qm=755, and ε3T/ε0=327 were obtained from the NKNC ceramics containing 1.0 mol% ZnO sintered at 900°C for 2 h.",

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AU - Park, Hwi Yeol

AU - Seo, In Tae

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AU - Nahm, Sahn

AU - Lee, Hyeung Gyu

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AB - (Na0.5K0.5)NbO3 (NKN) ceramic with 1.5 mol% CuO added (NKNC) was well sintered even at a low temperature of 900°C with the addition of ZnO. Most of the ZnO reacted with the CuO and formed the liquid phase that assisted the densification of the specimens at 900°C. A few Zn2+ ions entered the matrix of the specimens and increased the coercive field (Ec) and Qm values of the specimens. High-piezoelectric properties of kp=0.37, Qm=755, and ε3T/ε0=327 were obtained from the NKNC ceramics containing 1.0 mol% ZnO sintered at 900°C for 2 h.

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Low-temperature sintering and piezoelectric properties of (Na _0.5K_0.5)NbO₃ lead-free piezoelectric ceramics

Abstract

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