Abstract
Grain size effects on permittivity, piezoelectric constant d 33 and electric field-induced strain of BaTiO3 ceramics prepared by spark plasma sintering were studied systematically in this study. It was found that in our studied grain size range they all showed clear grain size effects, while their variations with grain size were distinctly different. With increasing grain size, the permittivity decreases monotonically due to decreased domain wall density, the piezoelectric constant d 33 keeps increasing because of the increased domain alignment which is related to the increase of 180° domain and decreased clamping effect on 90° domain switching by grain boundaries, the electric field-induced strain maximize at intermediate grain size which is due to the maximization of reversible 90° domain switching.
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Acknowledgments
This work is supported by the National Natural Science Foundation of China (21502007); the Opening Project of Xinjiang Laboratory of Phase Transitions and Microstructures of Condensed Matters (XJDX0912-2012-02); the Project of Changji College (Nos. 2015BSQD001, 2014YJYB006); College students innovation project (Nos. 201510997005, 201510997012).
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Guo, F.Q., Zhang, B.H., Fan, Z.X. et al. Grain size effects on piezoelectric properties of BaTiO3 ceramics prepared by spark plasma sintering. J Mater Sci: Mater Electron 27, 5967–5971 (2016). https://doi.org/10.1007/s10854-016-4518-1
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DOI: https://doi.org/10.1007/s10854-016-4518-1