Abstract
Bi0.8Gd0.2Fe1−xTixO3 (BGFTOx = 0,0.03,0.05) multiferroic nanoceramics were prepared by spark plasma sintering method. X-ray diffraction suggested the existence of tri-phase structures (Pnma, R3c, and Pn21a) in BGFTOx = 0.03,0.05 nanoceramics, and the effect of structure on the physical properties was investigated. BGFTOx = 0,0.03,0.05 nanoceramics exhibited typical relaxor ferroelectric behavior, and the transition temperature (Tm) was increased with the concentration of Ti4+. The impedance spectrum and ac conductivity of BGFTOx = 0.03,0.05 nanoceramics at different temperatures were investigated, and the results showed that BGFTOx = 0.05 nanoceramics possessed the lowest concentration of defects. Moreover, a weak ferromagnetic property was exhibited in BGFTOx = 0.05, and the reasons were discussed.
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Acknowledgements
This work was supported by the Department of Education Jiangxi Province (No. GJJ190990), the National Natural Science Foundation of China (No. 62041404), Jiangxi Province Natural Science Foundation (No. 2020BABL214009), National College Students’ Innovation and Entrepreneurship Training Program (No. 202010846004), and the Teaching Reform Tasks of Jiangxi Province (No. JXJG-17-24-12).
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Tian, Y., Xue, F., Tang, L. et al. Structural, impedance spectrum, and physical properties of Gd and Ti co-doped BiFeO3 ceramics synthesized by spark plasma sintering. J Mater Sci: Mater Electron 32, 18825–18836 (2021). https://doi.org/10.1007/s10854-021-06399-z
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DOI: https://doi.org/10.1007/s10854-021-06399-z