Varistor properties of ZnO/Pr6O11 multilayered composites prepared by pulsed laser ablation method

Satoshi Sugiyama, Atsunori Kamegawa, Hitoshi Takamura, Masuo Okada

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

ZnO-Pr6O11 varistors exhibit non-ohmic current-voltage characteristics due to the double Schottky barrier formed at the interface between ZnO grains and intergranular phases of Pr6O11. In this paper, the I-V characteristic of ZnO/Pr6O11 multilayered films with different thickness fabricated by pulsed laser ablation method are studied. In spite of decreasing the film thickness, the films with 5000-500 angstrom thickness exhibit nonlinear I-V characteristic. The values of breakdown voltage (Vb) and non-linear coefficient (α) are estimated as Vb=0.19-0.30V, α=2.5-4.1. Therefore, thin ZnO/Pr6O11 multilayered films prepared by PLD method show lower breakdown voltage.

Original languageEnglish
Pages (from-to)811-815
Number of pages5
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume46
Issue number8
DOIs
Publication statusPublished - 1999 Aug

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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