Nonohmic behavior of SnO2.MnO2-based ceramics
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 compara...
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2003-06-01
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Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000200025 |
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doaj-0560945eeae540b2832cfea7d8546bea2020-11-24T22:42:30ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392003-06-016227928310.1590/S1516-14392003000200025Nonohmic behavior of SnO2.MnO2-based ceramicsMarcelo O. OrlandiPaulo Roberto BuenoEdson Roberto LeiteElson LongoThe 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000200025SnO2varistorsemiconductor |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Marcelo O. Orlandi Paulo Roberto Bueno Edson Roberto Leite Elson Longo |
spellingShingle |
Marcelo O. Orlandi Paulo Roberto Bueno Edson Roberto Leite Elson Longo Nonohmic behavior of SnO2.MnO2-based ceramics Materials Research SnO2 varistor semiconductor |
author_facet |
Marcelo O. Orlandi Paulo Roberto Bueno Edson Roberto Leite Elson Longo |
author_sort |
Marcelo O. Orlandi |
title |
Nonohmic behavior of SnO2.MnO2-based ceramics |
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 |
publisher |
Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
series |
Materials Research |
issn |
1516-1439 |
publishDate |
2003-06-01 |
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. |
topic |
SnO2 varistor semiconductor |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000200025 |
work_keys_str_mv |
AT marcelooorlandi nonohmicbehaviorofsno2mno2basedceramics AT paulorobertobueno nonohmicbehaviorofsno2mno2basedceramics AT edsonrobertoleite nonohmicbehaviorofsno2mno2basedceramics AT elsonlongo nonohmicbehaviorofsno2mno2basedceramics |
_version_ |
1725699720024686592 |