Piezoelectric properties of K{sub 4}CuNb{sub 8}O{sub 23} modified (Na{sub 0.5}K{sub 0.5})NbO{sub 3} lead-free piezoceramics
Journal Article
·
· Journal of Applied Physics
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610064, Sichuan (China)
Dense K{sub 4}CuNb{sub 8}O{sub 23} modified (Na{sub 0.5}K{sub 0.5})NbO{sub 3} (NKN:KCN) ceramics were synthesized by using conventional oxide mixing process. The maximum mechanical quality factor Q{sub m} of NKN:KCN ceramics reaches up to 1150, the piezoelectric constant d{sub 33} and the planar electromechanical coefficient k{sub p} still maintain relatively high levels, which are about 100 pC/N and 40%, respectively. Middle frequency (455 kHz) lead-free resonators were fabricated by using NKN:KCN, and remarkable improvements in resonance characteristics were found by KCN doping.
- OSTI ID:
- 21064451
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 10 Vol. 102; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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