The Korean Journal of Ceramics

The Korean Ceramic Society (한국세라믹학회)
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Characteristics of ZnO Varistors with Praseodymium Oxide

  • Lee, Sang-Ki (Dept. of Electronic Materials Engr. and Advanced Materials Research Institute, Gyeongsang National University) ;
  • Cho, Sung-Gurl (Dept. of Electronic Materials Engr. and Advanced Materials Research Institute, Gyeongsang National University) ;
  • Shim, Young-Jae (Dept. of Inorganic Materials Engr. and Advanced Materials Research Institute, Gyeongsang National University)
  • Published : 1999.12.01
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Abstract

ZnO varistors containing cobalt, praseodymium and calcium oxides were prepared. The current-voltage charcteristics and microstructures of the specimens were investigated with respect to calcium addition and sintering temperature. The potential barrier heights and the carrier densities were estimated from C-V relations. The compatibility of Ag-Pd as an internal electrode for multilayer chip varistor was also examined.

Keywords

References

  1. IEEE Electrical Insulation Magazine v.5 no.6 Zinc Oxide Varistors K. Eda
  2. J. Am. Ceram. Soc. v.73 no.7 Application of Zinc Oxide Varistors T. K. Gupta
  3. Jpn. J. Appl. Phys. v.10 Nonohmic Properties of Zinc Oxide Ceramics M. Matsuoka
  4. J. Am. Ceram. Soc. v.79 no.9 Microstructure and Crystal Phases of Praseodymium Oxides in Zinc Oxide Varistor Ceramics Y.-S. Lee;K.-S. Liao;T.-Y. Tseng
  5. Am. Ceram. Soc. Bull. v.65 no.4 Zinc Oxide Varistors-A Review L. M. Levinson;H. R. Philipp
  6. Am. Ceram. Soc. Bull. v.66 no.9 Zinc Oxide Varistors with Praseodymium Oxide K. Mukae
  7. J. Am. Ceram. Soc. v.80 no.4 Phase Diagram and Microstructure in the ZnO-$Pr_2O_3$ System S.-Y. Chun;N. Wakiya;H. Funakubo;K. Shinozaki;N. Mizutani
  8. J. Appl. Phys. v.50 no.6 Capacitance-vs-Voltage Characteristics of ZnO Varistors K. Mukae;K. Tsuda;I. Nagasawa
  9. J. Am. Ceram. Soc. v.76 no.8 Compositional Effects on the Liquid-Phase Sintering of Praseodymium Oxide-Based Zinc Oxide Varistors A. B. Alles;V. L. Burdick