Advertisement

Dependence of microwave dielectric properties on the substitution of isovalent composite ion for Nb-site of MgZrNb2−x(Sn1/2W1/2)xO8 (0 ≤ x ≤ 0.15) ceramics

  • Mi XiaoEmail author
  • Susu He
  • Jiao Meng
  • Ping ZhangEmail author
Article
  • 32 Downloads

Abstract

MgZrNb2−x(Sn1/2W1/2)xO8 (0 ≤ x ≤ 0.15) dielectric ceramics were synthesized through solid state reaction route. SnO2, WO3 and Nb2O5 were pre-calcined to promote the substitution element to fully enter the Nb-site when reacting with MgO and ZrO2. The formation of solid solutions with monoclinic wolframite structure were confirmed. Rietveld refinement and P–V–L theory were used as intrinsic factors of analyzing the changes in microwave dielectric properties. With the increase of (Sn1/2W1/2)5+ substitution amount, εr of highly densified MgZrNb2−x(Sn1/2W1/2)xO8 ceramic decreased slowly, which was mainly ascribed to low bond iconicity. The optimal substitution of isovalent composite ions enhances the total lattice energy, leading to an increase in Q × f value. The increase of τf was closely correlated with the decrease of the total bond energy. When x = 0.06, the optimal dielectric properties, εr= 24.61, Q × f = 93346.3 GHz, τf= − 48.46 ppm/°C, were successfully obtained for the MgZrNb2−x(Sn1/2W1/2)xO8 specimens sintered at 1300 °C.

Notes

Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 51877146).

References

  1. 1.
    S.H. Kim, E.S. Kim, Intrinsic factors affecting the microwave dielectric properties of Mg2Ti1−x(Mg1/3Sb2/3)xO4 ceramic. Ceram. Int. 42, 15035–15040 (2016)CrossRefGoogle Scholar
  2. 2.
    G.H. Chen, C.L. Yuan, C.R. Zhou, Y. Yang, Low-firing high permittivity Ca0.6Sm0.8/3TiO3–(Li0.5Nd0.5)TiO3 ceramics with BaCu(B2O5) addition. Ceram. Int. 39, 9763–9766 (2013)CrossRefGoogle Scholar
  3. 3.
    I.M. Reaney, D. Iddles, Microwave dielectric ceramics for resonators and filters in mobile phone networks. J. Am. Ceram. Soc. 89(7), 2063–2072 (2006)Google Scholar
  4. 4.
    M.T. Sebastian, Dielectric Materials for Wireless Communication, 1st edn. (Elsevier Science, Amsterdam, 2008)Google Scholar
  5. 5.
    R.J. Cava, Dielectric materials for applications in microwave communications. J. Mater. Chem. 11, 54–62 (2001)CrossRefGoogle Scholar
  6. 6.
    P. Zhang, M.M. Yang, Sintering behavior, crystalline structure and microwave dielectric properties of Li2(Ni1−xMgx)3TiO6 (0 ≤ x ≤ 1) ceramics. Ceram. Int. 44, 21607–21612 (2018)CrossRefGoogle Scholar
  7. 7.
    S.D. Ramarao, V.R.K. Murthy, Crystal structure refinement and microwave dielectric properties of new low dielectric loss AZrNb2O8 (A: Mn, Zn, Mg and Co) ceramics. Scripta Mater. 29, 274–277 (2013)CrossRefGoogle Scholar
  8. 8.
    D.W. Kim, J.H. Kim, J.R. Kim, K.S. Hong, Phase constitutions and microwave dielectric properties of Zn3Nb2O8–TiO2. Jpn. J. Appl. Phys. 40, 5994–5998 (2001)CrossRefGoogle Scholar
  9. 9.
    P. Zhang, Y.G. Zhao, Influence of Ta substitution for Nb in Zn3Nb2O8 and the impact on the crystal structure and microwave dielectric properties. Dalton Trans. 45, 11807–11816 (2016)CrossRefGoogle Scholar
  10. 10.
    P. Zhang, Y.G. Zhao, Bond ionicity, lattice energy, bond energy and microwave dielectric properties of ZnZr(Nb1−xAx)2O8 (A = Ta, Sb) ceramics. Dalton Trans. 44, 16684–16693 (2015)CrossRefGoogle Scholar
  11. 11.
    M. Xiao, J. Lou, Effect of Co2+ substitution on crystal structure and microwave dielectric properties of MgZrNb2O8 ceramics. J. Alloys Compd. 747, 783–787 (2018)CrossRefGoogle Scholar
  12. 12.
    H.C. Yang, H.Y. Yang, Influence of (Al1/3W2/3)5+ co-substitution for Nb5+ in NdNbO4 and the impact on the crystal structure and microwave dielectric properties. Dalton Trans. 47, 15808–15815 (2018)CrossRefGoogle Scholar
  13. 13.
    J.H. Kim, E.S. Kim, Microwave dielectric properties of Mg4Nb2O9-based ceramics with (BxW1−x)5+ substitutions at Nb5+ sites (B = Li, Mg, Al, Ti). Ceram. Int. 43, S339–S342 (2017)CrossRefGoogle Scholar
  14. 14.
    Q.B. Meng, The bond ionicity in RBa2Cu3O7 (R = Pr, Sm, Eu, Gd, Dy, Y, Ho, Er, Tm). J. Phys. 10, 85–88 (1998)Google Scholar
  15. 15.
    M. Xiao, S.S. He, Influence of Ge4+ substitution for Zr4+ on the microwave dielectric properties of Mg(Zr1−xGex)Nb2O8 (0 ≤ x ≤ 0.4) ceramics. Ceram. Int. 44, 21585–21590 (2018)CrossRefGoogle Scholar
  16. 16.
    X.M. Chen, B. Liu, X.Q. Liu, Structural evolution and enhanced microwave dielectric properties in Sr2+/Ti4+ co-substituted SrNd2Al2O7 ceramics. J. Alloys Compd. 758, 25–31 (2018)CrossRefGoogle Scholar
  17. 17.
    Z.J. Wu, Semiempirical study on the valences of Cu and bond covalency in Y1−xCaxBa2Cu3O6+y. Phys. Rev. B 58, 958–962 (1998)CrossRefGoogle Scholar
  18. 18.
    R.T. Sanderson, Multiple and single bond energies in inorganic molecules. Inorg. Nucl. Chem. 30, 375–393 (1968)CrossRefGoogle Scholar
  19. 19.
    R.T. Sanderson, Electronegativity and bond energy. J. Am. Chem. Soc. 105, 2259–2261 (1983)CrossRefGoogle Scholar
  20. 20.
    H. Kagata, J. Kato, Dielectric properties of Ca-based complex perovskite at microwave frequencies. Jpn. J. Appl. Phys. 33, 5463–5465 (1994)CrossRefGoogle Scholar
  21. 21.
    J. Varghese, T. Joseph, K.P. Surendran, T.P.D. Rajan, M.T. Sebastian, Hafnium silicate: a new microwave dielectric ceramic with low thermal expansivity. Dalton Trans. 44, 5146–5152 (2015)CrossRefGoogle Scholar
  22. 22.
    Q. Liao, L. Li, X. Ren, X. Ding, New low-loss microwave dielectric material ZnTiNbTaO8. J. Am. Ceram. Soc. 94, 3237–3240 (2011)CrossRefGoogle Scholar
  23. 23.
    S.J. Penn, N. Mc, N. Alford, K.J. Scherapel, Effect of porosity and grain size on the microwave dielectric properties of sintered alumina. J. Am. Ceram. Soc. 80, 1885–1888 (1997)CrossRefGoogle Scholar
  24. 24.
    Ian M. Reaney, Dielectric and structural characteristics of Ba- and Sr-based complex perovskites as a function of tolerance factor. Jpn. J. Appl. Phys. 33, 3984–3990 (1994)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Electrical and Information Engineering & Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of EducationTianjin UniversityTianjinPeople’s Republic of China

Personalised recommendations