Zinc oxide (ZnO) is a multifunctional material due to its exceptional physicochemical
properties and broad usefulness. The special properties resulting from the reduction of the …

ZnO based varistors are widely used for overvoltage protection in many electrical and
electronic circuits, at voltages ranging from a few to over a million volts. By careful control of …

In this work, we demonstrate a hybrid cold sintering/spark plasma sintering (CSP-SPS)
process to densify ZnO ceramic with controlled grain growth. The densification of ZnO is …

Controlling the grain growth and grain boundary morphology is of great importance in the
manipulation of electrical properties of electro-ceramics. However, it has been a challenge …

The nonlinear response of a material to an external stimulus is vital in fundamental science
and technical applications. The power-law current–voltage relationship of a varistor is one …

Full NMR characterization of ZnO nanoparticles (NPs) stabilized by various amines
(hexadecylamine, dodecylamine, and octylamine) in C7D8 demonstrated that the surface of …

Doped nanocrystalline ZnO powders in the size range between 15 and 250 nm were
synthesized by chemical combustion method. The powders were characterized for their …

In present study, impact of CaO doping on microstructure and phase electrical properties of
a ZnO varistor is being reported. The doped ZnO nanopowders were prepared by solution …

ZnO varistor ceramics are synthesized by spark plasma sintering (SPS), and then annealed
in a conventional furnace in air atmosphere. Dense microstructure with more than 98% of …

Processing of materials in the form of ceramics normally involves several steps including
calcination at a relatively low temperature for synthesis of the end-product powder and …