Abstract
The Li3Mg2(Sb1−xVx)O6 (0.01 ≤ x ≤ 0.04) ceramics have been synthesized by the solid-state reaction method. The effects of V5+ ion substitution on the sinterability, phase composition and microwave dielectric properties of Li3Mg2(Sb1−xVx)O6 ceramics were investigated. The dehiscence and secondary phase in Li3Mg2SbO6-based ceramics could be effectively inhibited by partial substitution of V5+ on the Sb5+ sites. The optimum microwave dielectric properties (εr = 11.2, Qxf = 54,700 GHz, τf = − 20 ppm/°C) were obtained for Li3Mg2(Sb1−xVx)O6 (x = 0.03) ceramics sintered at 1250 °C. The εr of Li3Mg2(Sb0.97V0.03)O6 ceramics was mainly depended on ionic polarizability as well as density, whereas its Qxf was strongly dominated by average grain size.
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Acknowledgements
This work is supported by the National Natural Science Foundation of China (Grant No. 51402235). China’s Post-doctoral Science Fund (Grant No. 2015M582696), and by Shaanxi Province Postdoctoral Science Foundation. Shaan xi Province Department Education (No. 18JK0711).
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Pei, Cj., Li, Y., Hou, Cd. et al. Sintering behavior and microwave dielectric properties of V5+ substituted Li3Mg2SbO6 ceramics. J Mater Sci: Mater Electron 30, 14495–14499 (2019). https://doi.org/10.1007/s10854-019-01819-7
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DOI: https://doi.org/10.1007/s10854-019-01819-7