Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/80618
Type: Artigo de periódico
Title: Recent research developments in SnO2-based varistors
Author: Cassia-Santos, MR
Sousa, VC
Oliveira, MM
Sensato, FR
Bacelar, WK
Gomes, JW
Longo, E
Leite, ER
Varela, JA
Abstract: This paper discusses some advances in research conducted on SnO2-based electroceramics. The addition of different dopants, as well as several thermal treatments in oxidizing and inert atmospheres, were found to influence the microstructure and electrical properties of SnO2-based varistor ceramics. Measurements taken by impedance spectroscopy revealed variations in the height and width of the potential barrier resulting from the atmosphere in which thermal treatments were performed. High nonlinear coefficient values, which are characteristic of high-voltage and commercial ZnO varistors, were obtained for these SnO2-based systems. All the systems developed here have potentially promising varistor applications. (C) 2004 Elsevier B.V. All rights reserved.
Subject: varistors
SnO2
nonlinear systems
Schottky barrier
Country: Suíça
Editor: Elsevier Science Sa
Rights: fechado
Identifier DOI: 10.1016/j.matchemphys.2003.12.014
Date Issue: 2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

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