Abstract
(Na0.525K0.443Li0.037)(Nb0.883Sb0.08Ta0.037)O3 + x wt% ZnO-B2O3 (NKLNST + x ZnO-B2O3) lead-free piezoelectric ceramics were prepared via a conventional solid-state reaction for various values of x = {0, 0.3, 0.6, 0.9, 1.2}; then, the dielectric and the piezoelectric properties of these ceramics were investigated. A pure perovskite structure and a small secondary phase were observed in the X-ray diffraction patterns. For the 0.3-wt% ZnO-B2O3 specimen, a density of ρ = 4.537 g/cm3, an electromechanical coupling factor of k P = 0.432, a mechanical quality factor of Q m = 96, and piezoelectric constant of d 33 = 209 pC/N were found to be optimal. These results indicate that the material with this composition is a promising candidate for use in a lead-free piezoelectric device.
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Kim, YS., Yoo, JH. Effect of ZnO-B2O3 addition on the dielectric and the piezoelectric properties of lead-free (Na0.525K0.443Li0.037)(Nb0.883Sb0.08Ta0.037)O3 ceramics. Journal of the Korean Physical Society 65, 1938–1942 (2014). https://doi.org/10.3938/jkps.65.1938
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DOI: https://doi.org/10.3938/jkps.65.1938