Piezoelectric properties of CuO-added (Na0.5K0.5)NbO3 ceramic multilayers
- Title
- Piezoelectric properties of CuO-added (Na0.5K0.5)NbO3 ceramic multilayers
- Author
- 성태현
- Keywords
- Piezoelectric properties; Tape casting; Perovskite; Microstructure-final; Speaker; TEMPERATURE; MICROSTRUCTURE; LOUDSPEAKER; NIOBATE
- Issue Date
- 2012-03
- Publisher
- ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
- Citation
- In Journal of the European Ceramic Society 2012 32(5):1085-1090
- Abstract
- Multilayered ceramics (MLCs) laminated with 20 layers of CuO-added (Na0.5K0.5)NbO3 (CNKN) tape were well sintered at 960 degrees C with an average grain size of 5.0 mu m. They exhibited good piezoelectric properties of epsilon(T)(33)/epsilon(0) = 709, d(33) = 114 pC/N, k(p) = 0.34 and Q(m) = 793. The 80Ag/20Pd electrodes were well formed on the CNKN MLCs when they were co-fired at 960 degrees C for 2 h. A piezoelectric speaker fabricated using 6-layer CNKN MLCs exhibited an average sound pressure level (SPL) of 75 dB in the range between 300 and 20,000 Hz with a maximum SPL of 90 dB. This value is comparable with that of a loud stereo radio, indicating that the CNKN MLC is a good candidate material for piezoelectric speakers. (C) 2011 Elsevier Ltd. All rights reserved.
- URI
- http://www.sciencedirect.com/science/article/pii/S0955221911006121?via%3Dihub
- ISSN
- 0955-2219
- DOI
- 10.1016/j.jeurceramsoc.2011.11.020
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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