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http://dx.doi.org/10.4313/JKEM.2015.28.4.229

Piezoelectric and Dielectric Properties of Low Temperature Sintering (Na,K,Li)(Nb,Sb,Ta)O3 Ceramics Doped with CuO  

Lee, Gwang-Min (Department of Electrical Engineering, Semyung University)
Yoo, Ju-Hyun (Department of Electrical Engineering, Semyung University)
Lee, Jie-Young (School of Computer Science, Semyung University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.28, no.4, 2015 , pp. 229-233 More about this Journal
Abstract
In this paper, in order to develop outstanding Pb-free piezoelectric composition ceramics, the $(Na_{0.525}K_{0.443}Li_{0.037})(Nb_{0.883}Sb_{0.08}Ta_{0.037})O_3+0.3wt%Bi_2O_3+0.4wt%Fe_2O_3+xwt%CuO$ (x= 0~0.8 wt%)(abbreviated as NKL-NST) lead-free piezoelectric ceramics have been synthesized using the ordinary solid state reaction method. The effects of CuO-doping on the structure and electrical properties of the NKL-NST ceramics were systematically studied. The results show that the ceramics exhibit a pure perovskite structure with orthorhombic phase at room temperature, and secondary phase was found in the ceramics. The 0.4 wt%CuO added ceramics sintered at $950^{\circ}C$ showed the optimum properties of piezoelectric constant($d_{33}$), planar piezoelectric coupling coefficient(kp) and mechanical quality factor(Qm) : $d_{33}=213$[pC/N], kp= 0.43, Qm= 423,respectively.
Keywords
CuO; Lead-free piezoelectric; NKN;
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1 Y. H. Lee, D. H. Kim, J. H. Yoo, I. S. Kim, J. S. Song, and J. I. Hong, J. Korean Inst. Electr. Electron. Mater. Eng., 22, 489, (2009).
2 B. H. Seo and J. H. Yoo, J. Korean Inst. Electr. Electron. Mater. Eng., 23, 617 (2010).
3 S. H. Lee, S. G. Lee, and Y. H. L, J. Korean Inst. Electr. Electron. Mater. Eng., 24, 632 (2011).
4 S. H. Lee, S. P. Nam, S. G. Lee, and Y. H. Lee, J. Korean Inst. Electr. Electron. Mater. Eng., 24, 116 (2011).
5 S. J. Park, H. Y. Park, K. H. Cho, S. Nahm, H. G. Lee, D. H. Kim, and B. H. Choi, Mater. Res. Bull., 43, 3580 (2008).   DOI