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

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36 Citations (Scopus)


(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 ε3T0=327 were obtained from the NKNC ceramics containing 1.0 mol% ZnO sintered at 900°C for 2 h.

Original languageEnglish
Pages (from-to)36-39
Number of pages4
JournalJournal of the American Ceramic Society
Issue number1
Publication statusPublished - 2010 Jan

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry


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