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Citation: XIAO Mi, YANG Zhao, ZHONG Xiao-Rong, XI Fang-Fang. Influence of Bi2O3 on the Structure and Dielectric Properties of Ag(Nb0.8Ta0.2)O3 Ceramics[J]. Chinese Journal of Inorganic Chemistry, ;2014, 30(3): 649-653. doi: 10.11862/CJIC.2014.054 shu

Influence of Bi2O3 on the Structure and Dielectric Properties of Ag(Nb0.8Ta0.2)O3 Ceramics

  • 1.

    School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China

  • Received Date: 3 July 2013
    Available Online: 26 September 2013

  • The effect of Bi2O3 doping on the structure and dielectric properties of Ag(Nb0.8Ta0.2)O3 ceramics was investigated in this paper. The results of X-ray diffraction (XRD) showed that the doping of Bi2O3 could tend to accelerate the reduction of Ag, which may originate from the substitution of Bi3+ for Ag+. A certain doping amount of Bi2O3 would result in the increase of dielectric constant, and the decrease of dielectric loss of Ag(Nb0.8Ta0.2)O3 ceramics at room temperature, and making temperature coefficient shift for negative direction. The reason for the improvement of dielectric properties was also discussed. When the amount of Bi2O3 was about 3.5wt%, the sample had the best dielectric properties, larger permittivity (ε=672) and smaller dielectric loss (tanδ=7.3×10-4).
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