ac properties of metal-oxide varistors
- 1 March 1976
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 47 (3), 1117-1122
- https://doi.org/10.1063/1.322745
Abstract
Measurements of the small‐signal ac response of ZnO‐based ceramic varistors are reported for frequencies f in the range 30<f8 Hz and temperatures T in the range −200<Tp drops rapidly with frequency, a crude approximation being ρp∼1/ω. A broadened relaxation peak in the dissipation factor D=tanδ is observed at 3×105 Hz at room temperature. The peak has an exponential temperature dependence with an activation energy 0.36 eV.Keywords
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