The present review describes mainly the history of SnO2-based voltage-dependent
resistors, discusses the main characteristics of these polycrystalline semiconductor systems …

This work examines the influence of pentoxides (V 2 O 5, Nb 2 O 5, Sb 2 O 5 and Ta 2 O 5)
when utilized as dopants on the microstructure, morphology and non-ohmic electrical …

The microstructural development and the stabilised valence of the ions added to SnO2 were
analysed. Aiming at a better interpretation of the involved phenomena, the effects on grain …

In this research, the microstructure, dielectric, and non-Ohmic properties of (Cr, Nb) co-
doped SnO 2 ceramics,(Cr 0.5, Nb 0.5) x Sn 1-x O 2 with x%= 0, 0.5, 1.0, 2.0, 5.0, and 10.0 …

This article describes the admittance-frequency feature of a class of SnO 2⋅ CoO-based
polycrystalline ceramics with high nonlinear current–voltage characteristics (nonlinear …

In this research, full density, single phase microstructure (in the XRD and SEM detection
limits), and fine-grained SnO 2 varistors with an average grain size of 0.65 μm was acquired …

The influence of dopants commonly used in SnO2 varistor ceramics, such as CoO, Cr2O3 or
Nb2O5, on the structural properties of SnO2 was investigated. Several SnO2-based …

A phenomenological model of non-Ohmic conduction in a ceramic varistor is suggested and
it is applied to explain current–voltage characteristics of SnO2–Bi2O3–Co3O4–Nb2O5 …

We performed a comparative study of electrical and thermal properties of ZnO‐and SnO2‐
based varistor. The electrical properties of commercial ZnO‐based varistor are equivalent to …

Co2SnO4 powders with the spinel structure were successfully obtained by the sol–gel
method using Co (NO3) 2· 6H2O and SnCl4· 5H2O as raw materials, followed by calcining …