Abstract
Lead-free piezoceramics of (1 − x)Bi0.5Na0.5TiO3–xBaSnO3 (BNT–BS, x = 0, 0.02, 0.03, 0.04, 0.06, 0.09 and 0.12) have been synthesized and investigated. A rhombohedral–tetragonal morphotropic phase boundary (MPB) exists near x = 0.03. The MPB composition shows improved electrical properties: the saturated polarization, remnant polarization, coercive field, piezoelectric coefficient, planar electromechanical coupling factor, and unipolar strain are 35.8, 28.5 μC/cm2, and 4.5 kV/mm, 93 pC/N, 0.19, and 0.18 %, respectively. It is also found the introduction of BS can significantly enhance dielectric property. The structural and electrical properties are discussed by comparing with other BNT-based piezoceramics.
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Acknowledgments
This work was supported by the State Key Program for Basic Research of China (2013CB632900), the National Nature Science Foundation of China (11174127), the Doctoral Fund of Ministry of Education of China (20110091110014).
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Jiao, L., Guo, FF., Wang, JF. et al. Morphotropic phase boundary and electric properties in (1 − x)Bi0.5Na0.5TiO3–xBaSnO3 lead-free piezoelectric ceramics. J Mater Sci: Mater Electron 24, 4080–4084 (2013). https://doi.org/10.1007/s10854-013-1364-2
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DOI: https://doi.org/10.1007/s10854-013-1364-2