Microstructure and Electrical Properties of Doped ZnO Varistor Nanomaterials
A sol-gel method of preparation doped ZnO varistor nanomaterials is described, The influences of doped ZnO nanomaterials for varistor microstructure and electrical properties (nonlinear coefficient α, breakdown voltage V1mA , dielectric constant ε, and dielectric loss tan δ) are investigated. Compared with the conventional mixed oxide technique, varistor ceramic of prepared by nanometer materials showed a more homogeneous microstructure, smaller grain sizes, higher densities and excellent electrical properties.
Witold Lojkowski and John R. Blizzard
X. Kang et al., "Microstructure and Electrical Properties of Doped ZnO Varistor Nanomaterials", Solid State Phenomena, Vols. 99-100, pp. 127-132, 2004