AC impedance spectroscopic characterization of 10 mol% MgO doped ZnO varistors

The performance parameters e.g. non-linear coefficient (α) and breakdown electric field (Eb 1mA/cm 2 ) of ZnO based ceramic varistors were found to improve after the addition of 10 mol% MgO. The improvement in the varistor properties is examined by ac impedance spectroscopy technique in the frequenc...

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Bibliographic Details
Published in:Solid state communications 1993, Vol.85 (8), p.671-674
Main Authors: Kharat, D.K., Dhami, G.S., Date, S.K., Kulkarni, A.R., Paulamer, R.D.A.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Conductivity phenomena in semiconductors and insulators
Electronic transport in condensed matter
Exact sciences and technology
High-field and nonlinear effects
Physics
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Summary:The performance parameters e.g. non-linear coefficient (α) and breakdown electric field (Eb 1mA/cm 2 ) of ZnO based ceramic varistors were found to improve after the addition of 10 mol% MgO. The improvement in the varistor properties is examined by ac impedance spectroscopy technique in the frequency range (1 Hz–10 MHz) between temperature 25–250°C and understood in terms of differing contributions from the equivalent electrical circuit elements.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(93)90569-9