Effect of cuo on the sintering temperature and piezoelectric properties of (na0.5k0.5)nbo3 lead-free piezoelectric ceramics

Hwi Yeol Park, Joo Young Choi, Min Kyu Choi, Kyung Hoon Cho, Sahn Nahm, Hyeung Gyu Lee, Hyung Won Kang

Research output: Contribution to journalArticle

114 Citations (Scopus)

Abstract

When a small amount of CuO was added to (Na0.5K 0.5)NbO3 (NKN) ceramics sintered at 960°C for 2 h, a dense microstructure with increased grains was developed, probably due to liquidphase sintering. The Curie temperature slightly increased when CuO exceeded 1.5 mol%. The Cu2+ ion was considered to have replaced the Nb5+ ion and acted as a hardener, which increased the Ec and Qm values of the NKN ceramics. High piezoelectric properties of kp=0.37, Qm=844, and ε3 T/ε=229 were obtained from the specimen containing 1.5 mol% of CuO sintered at 960°C for 2 h.

Original languageEnglish
Pages (from-to)2374-2377
Number of pages4
JournalJournal of the American Ceramic Society
Volume91
Issue number7
DOIs
Publication statusPublished - 2008 Jul 1

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Piezoelectric ceramics
ceramics
Sintering
Lead
Ions
ion
Curie temperature
microstructure
temperature
Temperature
Microstructure
effect
sintering

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Effect of cuo on the sintering temperature and piezoelectric properties of (na0.5k0.5)nbo3 lead-free piezoelectric ceramics. / Park, Hwi Yeol; Choi, Joo Young; Choi, Min Kyu; Cho, Kyung Hoon; Nahm, Sahn; Lee, Hyeung Gyu; Kang, Hyung Won.

In: Journal of the American Ceramic Society, Vol. 91, No. 7, 01.07.2008, p. 2374-2377.

Research output: Contribution to journalArticle

Park, Hwi Yeol ; Choi, Joo Young ; Choi, Min Kyu ; Cho, Kyung Hoon ; Nahm, Sahn ; Lee, Hyeung Gyu ; Kang, Hyung Won. / Effect of cuo on the sintering temperature and piezoelectric properties of (na0.5k0.5)nbo3 lead-free piezoelectric ceramics. In: Journal of the American Ceramic Society. 2008 ; Vol. 91, No. 7. pp. 2374-2377.
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AU - Lee, Hyeung Gyu

AU - Kang, Hyung Won

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