Abstract
The non-stoichiometric Nd[Mg1/2(1+x)Sn1/2]O3 (NMS, − 0.04 ≤ x ≤ 0.04) were synthesized through a routine solid-state reaction process. The phase composition, phonon characteristics, and microwave dielectric properties were investigated by X-ray diffraction patterns, Scanning electron microscopy Raman and Fourier transform far-infrared reflection. The best crystallinity with uniformly distributed grains and clear grain boundaries at x = 0.01. The intrinsic properties were calculated by four-parameter semi-quantum model based on far-infrared reflectivity data, which agree well with those values obtained from the microscopic polarizabilities & damping coefficient angle. The correlations between intrinsic properties and lattice vibrational modes were discussed in particular.
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Acknowledgements
This work was supported by National Natural Science Foundation of China (Grant 11874240), the Natural Science Foundation of Shandong Province, China (No. ZR2016EMM21), Scientific Research Foundation of Shandong University of Science and Technology for Recruited Talents (No. 2016RCJJ002), the Opening Project of the State Key Laboratory of New Ceramic and Fine Processing Tsinghua University (No. KF201811).
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Zhang, J., Chen, G., Wang, J. et al. Crystal structures, intrinsic properties and phonon characteristics of non-stoichiometric Nd[Mg1/2(1+x)Sn1/2]O3 ceramics. J Mater Sci: Mater Electron 30, 2450–2458 (2019). https://doi.org/10.1007/s10854-018-0518-7
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DOI: https://doi.org/10.1007/s10854-018-0518-7