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Hexagonal nanocrystalline varistor grade ZnO particles with size 50 nm and the specific surface area of 28 m 2 /g have been prepared by non-aqueous gelation technique involving diethylene glycol and triethanolamine. The as-prepared varistor nanopowders were analyzed with the support of XRD, TG/DTA, FTIR, TMA, SEM and TEM. Varistor discs were fabricated by pressing and their densification was studied at 850, 950, 1050 and 1150°C. The evolution of varistor microstructures, extent of grain growthdoi:10.2298/pac1001007a fatcat:ivikorzb2vggljjmvgnqxtudne