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dc.contributor.authorAnas, S-
dc.contributor.authorMangalaraja, R V-
dc.contributor.authorMukundan, P-
dc.contributor.authorShukla, S K-
dc.contributor.authorAnanthakumar, S-
dc.identifier.citationActa Materialia 55(17):5792-5801;Oct 2007en_US
dc.description.abstractA direct synthesis of varistor-grade doped ZnO powder was attempted by simple hydrolysis followed by low-temperature refluxing (80 °C) in aqueous and alcoholic media. Rod like, one-dimensional nanocrystalline doped ZnO powders with crystallite size 24 nm and Brunauer–Emmett–Teller (BET) bulk surface area 22 m2 g−1 were synthesized. Sintering characteristics of these powders were analyzed under step-sintering coupled with rapid heating up to 1050 °C. The microstructural features and I–V characteristics of the step-sintered doped ZnO were compared with composite varistors. The study shows the advantage of the addition of nanosize doped varistor-grade ZnO as well as step-sintering for controlling grain size and improving varistor performance.en_US
dc.subjectDirect synthesisen_US
dc.subjectDoped zinc oxideen_US
dc.subjectComposite varistorsen_US
dc.titleDirect synthesis of varistor-grade doped nanocrystalline ZnO and its densification through a step-sintering techniqueen_US
Appears in Collections:2007

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