Low-temperature sintering and piezoelectric properties of CuO-added 0.95(Na0.5K0.5)NbO3-0.05BaTiO3 ceramics

Hwi Yeol Park, Cheol Woo Ahn, Kyung Hoon Cho, Sahn Nahm, Hyeung Gyu Lee, Hyung Won Kang, Duk Hee Kim, Kyeong Soon Park

Research output: Contribution to journalArticle

76 Citations (Scopus)

Abstract

The sintering temperature of 0.95(Na0.5K0.5)NbO 3-0.05BaTiO3 (NKN-BT) ceramics needs to be decreased below 1000°C to prevent Na2O evaporation, which can cause difficulties in poling and may eventually degrade their piezoelectric properties. NKN-BT ceramics containing CuO were well sintered at 950°C with grain growth. Poling was easy for all specimens. Densification and grain growth were explained by the formation of a liquid phase. The addition of CuO improved the piezoelectric properties by increasing the grain size and density. High piezoelectric properties of d33=230 pC/N, kp=37%, and ε3 T0=1150 were obtained from the specimen containing 1.0 mol% of CuO synthesized by the conventional solid-state method.

Original languageEnglish
Pages (from-to)4066-4069
Number of pages4
JournalJournal of the American Ceramic Society
Volume90
Issue number12
DOIs
Publication statusPublished - 2007 Dec 1

Fingerprint

Grain growth
ceramics
Sintering
Densification
Evaporation
grain size
evaporation
Temperature
liquid
Liquids
temperature
sintering
sodium oxide
method
solid state

ASJC Scopus subject areas

  • Ceramics and Composites

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Low-temperature sintering and piezoelectric properties of CuO-added 0.95(Na0.5K0.5)NbO3-0.05BaTiO3 ceramics. / Park, Hwi Yeol; Ahn, Cheol Woo; Cho, Kyung Hoon; Nahm, Sahn; Lee, Hyeung Gyu; Kang, Hyung Won; Kim, Duk Hee; Park, Kyeong Soon.

In: Journal of the American Ceramic Society, Vol. 90, No. 12, 01.12.2007, p. 4066-4069.

Research output: Contribution to journalArticle

Park, Hwi Yeol ; Ahn, Cheol Woo ; Cho, Kyung Hoon ; Nahm, Sahn ; Lee, Hyeung Gyu ; Kang, Hyung Won ; Kim, Duk Hee ; Park, Kyeong Soon. / Low-temperature sintering and piezoelectric properties of CuO-added 0.95(Na0.5K0.5)NbO3-0.05BaTiO3 ceramics. In: Journal of the American Ceramic Society. 2007 ; Vol. 90, No. 12. pp. 4066-4069.
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abstract = "The sintering temperature of 0.95(Na0.5K0.5)NbO 3-0.05BaTiO3 (NKN-BT) ceramics needs to be decreased below 1000°C to prevent Na2O evaporation, which can cause difficulties in poling and may eventually degrade their piezoelectric properties. NKN-BT ceramics containing CuO were well sintered at 950°C with grain growth. Poling was easy for all specimens. Densification and grain growth were explained by the formation of a liquid phase. The addition of CuO improved the piezoelectric properties by increasing the grain size and density. High piezoelectric properties of d33=230 pC/N, kp=37{\%}, and ε3 T/ε0=1150 were obtained from the specimen containing 1.0 mol{\%} of CuO synthesized by the conventional solid-state method.",
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AU - Park, Hwi Yeol

AU - Ahn, Cheol Woo

AU - Cho, Kyung Hoon

AU - Nahm, Sahn

AU - Lee, Hyeung Gyu

AU - Kang, Hyung Won

AU - Kim, Duk Hee

AU - Park, Kyeong Soon

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