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Electrical characteristics and pulse degradation of ZnO varistors with Nb2O5 dopant

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Abstract

The influence of Nb2O5 doping and pre-sintering of Nb2O5 with ZnO on electrical and pulse degradation characteristics of ZnO varistors has been investigated. Doping with a small amount of Nb2O5 worsened the electrical and pulse degradation characteristics. However, with 0.05–0.1 mol% Nb2O5, the electrical and pulse degradation characteristics were greatly improved, but further doping with Nb2O5 had little influence. Pre-sintering of Nb2O5 with ZnO at 1000–1100 °C greatly improved the electrical and pulse degradation characteristics.

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Authors and Affiliations

  1. Solid State Electronics Department, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, People’s Republic of China

    Hui -Feng Li, Yu -Chun Xu, Shi -Liang Wang & Li -Qiong Wang

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  1. Hui -Feng Li
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  2. Yu -Chun Xu
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  3. Shi -Liang Wang
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  4. Li -Qiong Wang
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Li, H.F., Xu, Y.C., Wang, S.L. et al. Electrical characteristics and pulse degradation of ZnO varistors with Nb2O5 dopant. JOURNAL OF MATERIALS SCIENCE 30, 5161–5165 (1995). https://doi.org/10.1007/BF00356064

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  • DOI: https://doi.org/10.1007/BF00356064

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