Abstract
(1 − x)BaTiO3–xBi(Li0.5Nb0.5)O3 [(1 − x)BT–xBLN, 0 ≤ x ≤ 0.1] lead-free ceramics were prepared via a conventional solid state reaction method. Raman spectra and X-ray diffraction results confirmed the phase transformation from tetragonal to pseudo cubic symmetry at 0 ≤ x ≤ 0.02. With adding Bi(Li0.5Nb0.5)O3, the thermal stability of permittivity and dielectric loss of ceramics were improved. Especially, 0.9BT–0.1BLN ceramics exhibited good dielectric properties with small Δε/ε25 °C values (≤ ± 15%) in a wide temperature range of −61–160 °C, high relative permittivity (~1500–1750) and low dielectric loss (tan δ ≤ 0.02) from −60 to 200 °C, which indicates that BT–BLN is candidate for X8R devices.
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Acknowledgements
This work was supported by Natural Science Foundation of China (Nos. 11664008, 11364012 and 11464009), Natural Science Foundation of Guangxi (Nos. 2015GXNSFDA139033 and 2014GXNSFAA118326), Research Start-up Funds Doctor of Guilin University of Technology (Nos. 002401003281 and 002401003282), and Project of Outstanding Young Teachers’ Training in Higher Education Institutions of Guangxi.
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Chen, X., Li, X., Huang, G. et al. Excellent thermal stability and low dielectric loss of (1 − x)BaTiO3 –xBi(Li0.5Nb0.5)O3 solid solutions in a broad temperature range applied in X8R. J Mater Sci: Mater Electron 28, 17278–17282 (2017). https://doi.org/10.1007/s10854-017-7659-y
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DOI: https://doi.org/10.1007/s10854-017-7659-y