Low-temperature ac properties of metal-oxide varistors
- 1 December 1978
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 49 (12) , 6142-6146
- https://doi.org/10.1063/1.324536
Abstract
Low‐temperature (3.5<Tf in the range 30<f5 Hz. A loss peak and dispersion in ε observed at 4 °K are identified as resulting from the two‐phase structure of the ZnO varistor (Maxwell‐Wagner model). We find the zinc oxide grain resistivity ρZnO∼106 Ω cm in a typical commercial varistor at 4.2 °K. The physical origin of a second loss peak observed in measurements around room temperature is discussed. We show the latter dispersion is not interpretable using a Maxwell‐Wagner model for an inhomogeneous conductor.This publication has 10 references indexed in Scilit:
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