Electrical and micro structural properties of (Zn, Nb, Fe)-doped SnO2 varistor systems
| Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
|---|---|
| Data(s) |
20/05/2014
20/05/2014
01/01/2005
|
| Resumo |
The electrical and microstructural properties of SnO2-based varistors with the addition of 0.025 and 0.050 mol% of Fe2O3 have been characterised. Electric field (E) versus current density (J) curves showed that the effect of Fe2O3 addition is to increase both the non-linear coefficient and the breakdown voltage. Variations in the potential barrier height were inferred from impedance spectroscopy (IS) analysis. Through transmission electron microscopy (TEM), the presence of precipitates of secondary phases was confirmed. Samples with precipitates displayed poor electrical properties. (c) 2004 Elsevier Ltd and Techna Group S.r.l. All rights reserved. |
| Formato |
737-742 |
| Identificador |
http://dx.doi.org/10.1016/j.ceramint.2004.08.009 Ceramics International. Oxford: Elsevier B.V., v. 31, n. 5, p. 737-742, 2005. 0272-8842 http://hdl.handle.net/11449/32772 10.1016/j.ceramint.2004.08.009 WOS:000229358700016 |
| Idioma(s) |
eng |
| Publicador |
Elsevier B.V. |
| Relação |
Ceramics International |
| Direitos |
closedAccess |
| Palavras-Chave | #microstructure-final #electrical properties #impedance #varistors #tin dioxide |
| Tipo |
info:eu-repo/semantics/article |
