Please use this identifier to cite or link to this item: http://cmuir.cmu.ac.th/jspui/handle/6653943832/61746
Title: Effects of cobalt doping on nonlinearity of zinc oxide
Authors: W. Onreabroy
N. Sirikulrat
Keywords: Materials Science
Physics and Astronomy
Issue Date: 15-Jun-2006
Abstract: The microstructures and electrical properties of ZnO-Bi2O3-CoO (ZBC), ZnO-Bi2O3(ZB) and ZnO-CoO (ZC) ceramics were investigated. Cobalt oxide addition could reduce bismuth loss at high sintering temperature. The same amount of cobalt within ZnO grains was found in both specimens, ZBC and ZC, suggesting that bismuth had no effect on the dissolution of cobalt in ZnO and cobalt substitution for zinc in the ZnO structure. The highest nonlinear coefficient of about 19 was found in the ZBC varistor sintered at 1000-1100 °C. For the ZC specimens, nonlinear properties could also be obtained in this sintering temperature range. © 2006 Elsevier B.V. All rights reserved.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33846240535&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/61746
ISSN: 09215107
Appears in Collections:CMUL: Journal Articles

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