Abstract
The influences of different doping contents of additive B2O3 on the sintering behavior, microstructure and microwave properties of Ba(Mg1/3Nb2/3)O3 (BMN) microwave ceramics were studied. The main phase in the sintered ceramics was crystallized as Ba(Mg1/3Nb2/3)O3 (BMN). Ba2B2O5 as the secondary phase was observed with x ≥ 10. Scanning electron microscopy (SEM) analysis revealed that the photograph of optimally nonstoichiometric ceramics sintered at 900 °C for 5 h displayed a dense microstructure. The dielectric properties and microstructures of BMN ceramics were very sensitive to the nonstoichiometry. The addition of B2O3 had a positive influence on the Q × f value, for example the sample with x = 7 showed the highest Q × f value of 89,800 GHz. Finally, excellent microwave dielectric properties (εr = 31.6, Q × f = 89,800 GHz and τf = 3.6 ppm/°C) were achieved for the sample with x = 7 sintered at 900 °C for 5 h.
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12 May 2021
A Correction to this paper has been published: https://doi.org/10.1007/s10854-021-06130-y
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Acknowledgements
This work was supported by the scientific Research Fund of Hunan Provincial Education Department (Grant No. 20A450), the project of the science and technology of Shaoyang City (Grant No. 2020GZ46), Science and technology innovation and entrepreneurship project of college students in Hunan Science and technology innovation talent plan (Grant No. 2020RC1011).
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Peng, S., Yao, W., Zeng, W. et al. Effect of B2O3 on the microstructure and microwave dielectric properties of Ba(Mg1/3Nb2/3)O3 ceramics. J Mater Sci: Mater Electron 32, 11084–11091 (2021). https://doi.org/10.1007/s10854-021-05770-4
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DOI: https://doi.org/10.1007/s10854-021-05770-4