Relationship between microstructure and electrical properties of ZnO-based multilayer varistor

Wen Hsi Lee, Wei Ting Chen, Ying Chieh Lee, Shih Pin Lin, Tony Yang

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

In this study, two types of ZnO-based multilayer varistor (MLV) with two different dielectric layers (12 and 24 μm), sintered from 900 to 1000°C for 2 h were prepared to investigate the effects of microstructure such as the grain size and number of grain boundaries between two adjourn electrodes on electrical properties. The results show that the grain size linearly increases with sintering temperature, which results in an increase in the capacitance of ZnO-based MLVs. In contrast, the number of grain boundaries between two adjourn electrodes linearly decreases with sintering temperature associated with a decrease in breakdown voltage, leakage current and nonlinear coefficient of ZnO-based MLVs. The energy absorption capabilities determined from the peak current (PC) measurements of ZnO-based MLVs with sintering temperature are reported. The optimum peak currents of ZnO-based MLVs can be obtained by sintering at 950°C.

Original languageEnglish
Pages (from-to)5126-5131
Number of pages6
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume45
Issue number6 A
DOIs
Publication statusPublished - 2006 Jun 28

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varistors
Varistors
sintering
Multilayers
Electric properties
Sintering
electrical properties
microstructure
Microstructure
Grain boundaries
grain boundaries
grain size
Electrodes
electrodes
energy absorption
Energy absorption
Electric current measurement
Electric breakdown
electrical faults
Leakage currents

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

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abstract = "In this study, two types of ZnO-based multilayer varistor (MLV) with two different dielectric layers (12 and 24 μm), sintered from 900 to 1000°C for 2 h were prepared to investigate the effects of microstructure such as the grain size and number of grain boundaries between two adjourn electrodes on electrical properties. The results show that the grain size linearly increases with sintering temperature, which results in an increase in the capacitance of ZnO-based MLVs. In contrast, the number of grain boundaries between two adjourn electrodes linearly decreases with sintering temperature associated with a decrease in breakdown voltage, leakage current and nonlinear coefficient of ZnO-based MLVs. The energy absorption capabilities determined from the peak current (PC) measurements of ZnO-based MLVs with sintering temperature are reported. The optimum peak currents of ZnO-based MLVs can be obtained by sintering at 950°C.",
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Relationship between microstructure and electrical properties of ZnO-based multilayer varistor. / Lee, Wen Hsi; Chen, Wei Ting; Lee, Ying Chieh; Lin, Shih Pin; Yang, Tony.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 45, No. 6 A, 28.06.2006, p. 5126-5131.

Research output: Contribution to journalArticle

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