Hai-tao Li, Bo-ping Zhang, Wei-gang Yang, and Nan Ma, Influence of sintering temperature on the structure and piezoelectric properties of ZnO-modified (Li, Na, K)NbO3 lead-free ceramics, Int. J. Miner. Metall. Mater., 19(2012), No. 9, pp. 843-848. https://doi.org/10.1007/s12613-012-0637-8
Cite this article as:
Hai-tao Li, Bo-ping Zhang, Wei-gang Yang, and Nan Ma, Influence of sintering temperature on the structure and piezoelectric properties of ZnO-modified (Li, Na, K)NbO3 lead-free ceramics, Int. J. Miner. Metall. Mater., 19(2012), No. 9, pp. 843-848. https://doi.org/10.1007/s12613-012-0637-8
Hai-tao Li, Bo-ping Zhang, Wei-gang Yang, and Nan Ma, Influence of sintering temperature on the structure and piezoelectric properties of ZnO-modified (Li, Na, K)NbO3 lead-free ceramics, Int. J. Miner. Metall. Mater., 19(2012), No. 9, pp. 843-848. https://doi.org/10.1007/s12613-012-0637-8
Citation:
Hai-tao Li, Bo-ping Zhang, Wei-gang Yang, and Nan Ma, Influence of sintering temperature on the structure and piezoelectric properties of ZnO-modified (Li, Na, K)NbO3 lead-free ceramics, Int. J. Miner. Metall. Mater., 19(2012), No. 9, pp. 843-848. https://doi.org/10.1007/s12613-012-0637-8
ZnO-modified (Li, Na, K)NbO3 lead-free ceramics with a nominal composition of Li0.06(Na0.535K0.48)0.94NbO3+0.7mol% ZnO (LNKN-Z7) was synthesized normally at 930-1000℃. The Zn ions incorporated into the A-site at a higher sintering temperature, which changed LNKN-Z7 to soft piezoelectric ceramics with the mechanical quality factor decreasing from 228 to 192. A phase transition from tetragonal to orthorhombic symmetry was identified by XRD analysis, and the corresponding calculation of lattice parameters was conducted at 970-980℃. Because of such transitional behavior and fine microstructure, the optimized values of piezoelectric coefficient, planar electromechanical coupling coefficient, and relative dielectric constant were obtained.
ZnO-modified (Li, Na, K)NbO3 lead-free ceramics with a nominal composition of Li0.06(Na0.535K0.48)0.94NbO3+0.7mol% ZnO (LNKN-Z7) was synthesized normally at 930-1000℃. The Zn ions incorporated into the A-site at a higher sintering temperature, which changed LNKN-Z7 to soft piezoelectric ceramics with the mechanical quality factor decreasing from 228 to 192. A phase transition from tetragonal to orthorhombic symmetry was identified by XRD analysis, and the corresponding calculation of lattice parameters was conducted at 970-980℃. Because of such transitional behavior and fine microstructure, the optimized values of piezoelectric coefficient, planar electromechanical coupling coefficient, and relative dielectric constant were obtained.
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