Abstract
The rock-salt structured Li2Mg0.95A0.05TiO4 (A=Ni, Co, Mn, Zn) ceramics were prepared by the conventional solid-state method. The effects of different bivalent ions on the phase compositions, microstructure and microwave dielectric properties were investigated systematically. All the sintered samples exhibited a single phase with the space group of Fm-3m. The dielectric constants of Li2Mg0.95A0.05TiO4 ceramics were affected by the apparent densities and the dielectric polarizabilities. The Q·f values of Li2Mg0.95Co0.05TiO4 and Li2Mg0.95Zn0.05TiO4 ceramics were improved to ~110,000 GHz when the samples were sintered at 1350 °C. In addition, the temperature coefficient of resonant frequency showed no significant changes with the ionic substitutions. Typically, the Li2Mg0.95Co0.05TiO4 ceramics exhibited excellent microwave dielectric properties of ε r=15.74, Q·f = 111,700 GHz and τ f = −4.78 ppm/°C at 1350 °C. The Li2Mg0.95Zn0.05TiO4 specimens sintered at the same temperature also possessed similar dielectric properties with ε r = 16.07, Q·f = 111,300 GHz and τ f = −8.02 ppm/°C.
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References
A. Terrell, Vanderah, Science 298, 1182 (2002)
I.M. Reaney, D. Iddles, J. Am. Ceram. Soc. 89, 2063 (2006)
H. Ohsato, Ceram. Int. 38, S141 (2012)
H.T. Wu, L.P. Zhao, J. Univ. Jinan (Sci. Tech.) 30, 177 (2016)
S. George, M.T. Sebastian, J. Am. Ceram. Soc. 93, 2164 (2010)
Z.F. Fu, P. Liu, J.L. Ma, X.G. Zhao, H.W. Zhang, J. Eur. Ceram. Soc. 3, 625 (2016)
H.T. Wu, E.S. Kim, RSC Adv. 6, 47443 (2016)
J.X. Tong, J.H. Zhou, H. Yang, Q.L. Zhang, W. Huang, Y. You, J. Mater. Sci. Mater. Electron. 25, 1293 (2014)
J.J. Bian, Y.F. Dong, J. Eur. Ceram. Soc. 2, 325 (2010)
Y.D. Zhang, D. Zhou, J. Am. Ceram. Soc. 99, 3645 (2016)
Y.W. Tseng, J.Y. Chen, Y.C. Kuo, C.L Huang. J. Alloy. Compd. 33, L308 (2011)
H.L. Pan, C.F. Xing, X.S. Jiang, H.T. Wu, J. Alloy. Compd. 688, 416 (2016)
C.J. Pei, G.G. Yao, P. Liu, J.P. Zhou, Mater. Lett. 184, 57 (2016)
P. Zhang, H. Xie, Y.G. Zhao, M. Xiao, J. Alloy. Compd. 689, 246 (2016)
B.W. Hakki, P.D. Coleman, IEEE Trans. Microw. Theory Tech. 8, 402 (1960)
W.E. Courtney, IEEE Trans. Microw. Theory Tech. 18, 476 (1970)
R. Muhammad, Y. Iqbal, J. Mater. Sci. Mater. Electron. 26, 9092 (2015)
A. Manan, D.N. Khan, A. Ullah, J. Mater. Sci. Mater. Electron. 26, 2066 (2015)
R.D. Shannon, G.R. Rossman, Am. Miner 77, 94 (1992)
R.D. Shannon, J. Appl. Phys. 73, 348 (1993)
Y. Iida, J. Am. Ceram. Soc. 43, 171 (1960)
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This work was supported by the National Natural Science Foundation (No. 51472108).
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Du, H., Li, C.C., Liu, F.L. et al. Influence of ionic substitution on the microwave dielectric properties of Li2Mg0.95A0.05TiO4 (A=Ni, Co, Mn, Zn) ceramics. J Mater Sci: Mater Electron 28, 8304–8308 (2017). https://doi.org/10.1007/s10854-017-6544-z
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DOI: https://doi.org/10.1007/s10854-017-6544-z