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

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Effect of cuo on the sintering temperature and piezoelectric properties of (na<sub>0.5</sub>k<sub>0.5</sub>)nbo<sub>3</sub> lead-free piezoelectric ceramics'. Together they form a unique fingerprint.

  • Cite this