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Influence of Sintering Temperature on Electrical and Dielectric Characteristics of Zn-Pr-Co-Cr-La Oxide-Based Nonlinear Resistors

Zn-Pr-Co-Cr-La 산화물계 비선형 저항체의 전기적, 유전적 성질에 소결온도가 미치는 영향

  • Nahm, Choon-Woo (Department of Electrical Engineering, Dongeui University)
  • 남춘우 (동의대학교 전기공학과)
  • Published : 2006.09.01

Abstract

The electrical and dielectric properties of $ZnO-Pr_6O_{11}CoO-Cr_2O_3La_2O_3-based$ nonlinear resistors were investigated at different sintering temperatures in the range of $1230{\sim}1300^{|circ}C$. As the sintering temperature increased, the breakdown voltage decreased from 777.9 to 108.0V/mm, the nonlinear coefficient greatly decreased from 77.0 to 7.1, and the leakage current increased from $0.4{\mu}A\;to\;50.6{\mu}A$. On the other hand, the donor density from $0.90{\times}10^{18}\;to\;2.59{\times}10^{18}/cm^3$ and the barrier height decreased from 1.89 to 0.69 eV with increasing temperature. The dielectric dissipation factor increased from 0.0879 to 0.2839 for the increase of sintering temperature.

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