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Fabrication and properties of multilayer Sr0.7Ba0.3TiO3 ceramic varistors

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Abstract

The fabrication and properties of the multilayer Sr0.7Ba0.3TiO3 ceramic varistors made from low-fire Sr0.7Ba0.3TiO3-based ceramic materials doped with small amounts of additives such as Nb2O5 and Li2CO3 are described. After being sintered at 1100° C in a reducing atmosphere and annealed at 900° C in air, the varistors exhibited the following characteristics: varistor voltage V1mA, 10 v; nonlinear coefficientα, 15. The varistor voltage was almost unchanged against a supplied surge energy of 300 J/cm3. The varistors had excellent capacitor characteristics. The capacitance and loss factor were 80 nF and 2%, respectively.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, University of Electronic Science and Technology of China, 610054, Chengdu, P.R. China

    Liqin Zhou, Zhihua Jiang & Changkui Yu

Authors
  1. Liqin Zhou
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  2. Zhihua Jiang
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  3. Changkui Yu
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Zhou, L., Jiang, Z. & Yu, C. Fabrication and properties of multilayer Sr0.7Ba0.3TiO3 ceramic varistors. J. Electron. Mater. 21, 239–241 (1992). https://doi.org/10.1007/BF02655843

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  • DOI: https://doi.org/10.1007/BF02655843

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