Journal of Electronic Materials

, Volume 48, Issue 1, pp 656–661 | Cite as

Microwave Dielectric Properties of Na5RE(MoO4)4 (RE = La, Gd, Dy, Er) Ceramics with a Low Sintering Temperature

  • Liufang Meng
  • Changlai YuanEmail author
  • Baohua Zhu
  • Xiao Liu
  • Fei Liu
  • Jiwen Xu
  • Changrong Zhou
  • Guohua Chen


Na5RE(MoO4)4 (RE = La, Gd, Dy, Er) ceramics have been synthesized by the conventional solid-state reaction method. The crystallizations, microstructures and microwave dielectric properties of Na5RE(MoO4)4 ceramics were also investigated. The room-temperature x-ray diffraction patterns of Na5RE (MoO4)4 ceramics illustrate a tetragonal structure with a I 41/a space group. The grain size of Na5La(MoO4)4 is larger than that of Na5RE(MoO4)4 (RE = Gd, Dy, Er) ceramics, and uneven grains are observed in the systems. Na5RE (MoO4)4 ceramics sintered at 570–690°C for 4 h possess excellent microwave dielectric properties with εr = 6.4–8.4, τf = − 27.7–34.3 ppm/°C, and Q × f = 4073–24411 GHz at their optimum sintering temperature. The nonreactivity of Na5Er(MoO4)4 with silver is evidenced by x-ray diffraction, and SEM and EDS analysis reveal that silver can be a co-firable electrode material for the present ceramics.


Low-temperature sintering microwave dielectric properties Na5RE(MoO4)4 microstructures 


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The authors would like to thank the National Natural Science Foundation of China (Grant No. 11464006) for financial support.


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Copyright information

© The Minerals, Metals & Materials Society 2018

Authors and Affiliations

  • Liufang Meng
    • 1
  • Changlai Yuan
    • 1
    • 2
    Email author
  • Baohua Zhu
    • 1
  • Xiao Liu
    • 1
    • 2
  • Fei Liu
    • 1
  • Jiwen Xu
    • 1
    • 2
  • Changrong Zhou
    • 1
    • 2
  • Guohua Chen
    • 1
    • 2
  1. 1.College of Material Science and EngineeringGuilin University of Electronic TechnologyGuilinPeople’s Republic of China
  2. 2.Guangxi Key Laboratory of Information MaterialsGuilin University of Electronic TechnologyGuilinPeople’s Republic of China

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