Optical method for determining the grain resistivity in ZnO-based ceramic varistors
- 1 March 1976
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 47 (3), 1112-1116
- https://doi.org/10.1063/1.322734
Abstract
An optical technique for evaluating the grain resistivity in ZnO ceramic varistors is described. It is based on the existence of a rather sharp minimum in the infrared reflectance whose wavelength position depends on the free‐electron density and hence on the ZnO grain resistivity. Values of resistivity obtained from optical measurements are in good agreement with those obtained using alternative evaluation techniques.Keywords
This publication has 8 references indexed in Scilit:
- Tunneling of photoexcited carriers in metal oxide varistorsJournal of Applied Physics, 1975
- Microstructure and phase transformation in a highly non−Ohmic metal oxide varistor ceramicJournal of Applied Physics, 1975
- The physics of metal oxide varistorsJournal of Applied Physics, 1975
- Metal oxide varistor-A multijunction thin-film deviceApplied Physics Letters, 1974
- Nonohmic Properties of Zinc Oxide CeramicsJapanese Journal of Applied Physics, 1971
- Infrared reflectivity of zinc oxideJournal of Physics and Chemistry of Solids, 1959
- Infrared absorption in zinc oxide crystalsJournal of Physics and Chemistry of Solids, 1959
- Determination of Optical Constants and Carrier Effective Mass of SemiconductorsPhysical Review B, 1957