Nonohmic behavior of SnO2.MnO2-based ceramics

Detalhes bibliográficos
Autor(a) principal: Orlandi,Marcelo O.
Data de Publicação: 2003
Outros Autores: Bueno,Paulo Roberto, Leite,Edson Roberto, Longo,Elson
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000200025
Resumo: The present paper describes the nonohmic behavior of the SnO2.MnO-based system and analyzes the influence of the sintering time and the Nb2O5 concentration on this system's electrical properties. A nonlinear coefficient of ~7 was obtained for a 0.2 mol%-doped Nb2O5 composition, which is comparable to other values reported in the literature for the ternary SnO2-based systems. A recent barrier formation model proposed in the literature to explain the nonlinear electrical behavior of SnO2-based systems is used to clarify the role of the MnO constituent in the formation of the barrier, taking into account the influence of segregated atoms, precipitated phase and oxygen species in the grain boundary region.
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spelling Nonohmic behavior of SnO2.MnO2-based ceramicsSnO2varistorsemiconductorThe present paper describes the nonohmic behavior of the SnO2.MnO-based system and analyzes the influence of the sintering time and the Nb2O5 concentration on this system's electrical properties. A nonlinear coefficient of ~7 was obtained for a 0.2 mol%-doped Nb2O5 composition, which is comparable to other values reported in the literature for the ternary SnO2-based systems. A recent barrier formation model proposed in the literature to explain the nonlinear electrical behavior of SnO2-based systems is used to clarify the role of the MnO constituent in the formation of the barrier, taking into account the influence of segregated atoms, precipitated phase and oxygen species in the grain boundary region.ABM, ABC, ABPol2003-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000200025Materials Research v.6 n.2 2003reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392003000200025info:eu-repo/semantics/openAccessOrlandi,Marcelo O.Bueno,Paulo RobertoLeite,Edson RobertoLongo,Elsoneng2003-07-02T00:00:00Zoai:scielo:S1516-14392003000200025Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2003-07-02T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Nonohmic behavior of SnO2.MnO2-based ceramics
title Nonohmic behavior of SnO2.MnO2-based ceramics
spellingShingle Nonohmic behavior of SnO2.MnO2-based ceramics
Orlandi,Marcelo O.
SnO2
varistor
semiconductor
title_short Nonohmic behavior of SnO2.MnO2-based ceramics
title_full Nonohmic behavior of SnO2.MnO2-based ceramics
title_fullStr Nonohmic behavior of SnO2.MnO2-based ceramics
title_full_unstemmed Nonohmic behavior of SnO2.MnO2-based ceramics
title_sort Nonohmic behavior of SnO2.MnO2-based ceramics
author Orlandi,Marcelo O.
author_facet Orlandi,Marcelo O.
Bueno,Paulo Roberto
Leite,Edson Roberto
Longo,Elson
author_role author
author2 Bueno,Paulo Roberto
Leite,Edson Roberto
Longo,Elson
author2_role author
author
author
dc.contributor.author.fl_str_mv Orlandi,Marcelo O.
Bueno,Paulo Roberto
Leite,Edson Roberto
Longo,Elson
dc.subject.por.fl_str_mv SnO2
varistor
semiconductor
topic SnO2
varistor
semiconductor
description The present paper describes the nonohmic behavior of the SnO2.MnO-based system and analyzes the influence of the sintering time and the Nb2O5 concentration on this system's electrical properties. A nonlinear coefficient of ~7 was obtained for a 0.2 mol%-doped Nb2O5 composition, which is comparable to other values reported in the literature for the ternary SnO2-based systems. A recent barrier formation model proposed in the literature to explain the nonlinear electrical behavior of SnO2-based systems is used to clarify the role of the MnO constituent in the formation of the barrier, taking into account the influence of segregated atoms, precipitated phase and oxygen species in the grain boundary region.
publishDate 2003
dc.date.none.fl_str_mv 2003-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000200025
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000200025
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392003000200025
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.6 n.2 2003
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
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