“…The increase of varistor voltage can be explained by the increase in the number of grain boundaries owing to the decrease of average ZnO grain size [43]. However, with more TiO 2 doped, the dopants will deteriorate the nonlinear electrical properties of the samples.…”
“…The increase of varistor voltage can be explained by the increase in the number of grain boundaries owing to the decrease of average ZnO grain size [43]. However, with more TiO 2 doped, the dopants will deteriorate the nonlinear electrical properties of the samples.…”
“…It is believed that the decrease of the average grain size with Nd 2 O 3 content is attributed to segregation of Nd 2 O 3 , which nearly insoluble in ZnO grains, to grain boundaries. This was nearly equal to that of ceramics doped with other rare-earth metal oxides [10].…”
“…A high value of nonlinear exponent of varistor ceramics would lead to low leakage current due to its relatively high tunneling current, and a low value of nonlinear exponent would lead to high leakage current due to its relatively high thermionic emission current [39].…”
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.