%0 Journal Article %J Ceramics International %D 2007 %T Influence of surfactant on ZnO varistors %A Dhage, S. R. %A Navale, S. C. %A Ravi, V. %K Chemical synthesis %K Semiconductors %K X-ray methods %K ZnO %X

ZnO varistors with and without surfactant such as sodium dodecyl sulphate (SIDS) are prepared by nitrate-combustion process. The samples were identically heat treated and sintered at 1000 degrees C for 12 h to study the influence of the surfactant on the nonlinear electrical properties of polycrystalline ZnO. It is observed that the nonlinear coefficient decreases marginally (alpha = 35) for samples prepared with surfactant, whereas breakdown field (E-B = 130 V/mm) decreased significantly. The corresponding parameters for the samples synthesized without surfactant are alpha = 45 and E-B = 400 V/mm. Hence, this method can be used for the manufacture of varistors with low to moderate breakdown fields. (c) 2005 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

%B Ceramics International %I ELSEVIER SCI LTD %C THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND %V 33 %P 289-291 %8 MAR %G eng %N 2 %9 Article %3

Foreign

%4 2.758 %R 10.1016/j.ceramint.2005.08.010