Dielectric dispersion in Bi3Zn2Sb3O14 ceramic: a pyrochlore type phase

Detalhes bibliográficos
Autor(a) principal: Lanfredi,Silvania
Data de Publicação: 2003
Outros Autores: Nobre,Marcos A. de Lima
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=S1516-14392003000200008
Resumo: The electric and dielectric properties of Bi3Zn2Sb3O14 ceramic were studied by impedance spectroscopy. The measurements were performed in the frequency range 5 to 13 MHz and at temperature ranges from 25 to 700 °C. The permittivity was calculated by the variation of the imaginary part of the impedance (-Im(Z)) as function of 1/omega, where omega represents the angular frequency (2pif). The parameter epsilon = f(T) exhibits values in the range from 40 to 48. The dielectric losses (tandelta) show slight dependence with the temperature up to 400 °C. A strong increasing of the tandeltaoccurs at temperatures higher than 400 °C. In a general way, a decrease of the parameter tandelta occurs with the increasing frequency.
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spelling Dielectric dispersion in Bi3Zn2Sb3O14 ceramic: a pyrochlore type phasevaristorpyrochloreimpedance spectroscopydielectricThe electric and dielectric properties of Bi3Zn2Sb3O14 ceramic were studied by impedance spectroscopy. The measurements were performed in the frequency range 5 to 13 MHz and at temperature ranges from 25 to 700 °C. The permittivity was calculated by the variation of the imaginary part of the impedance (-Im(Z)) as function of 1/omega, where omega represents the angular frequency (2pif). The parameter epsilon = f(T) exhibits values in the range from 40 to 48. The dielectric losses (tandelta) show slight dependence with the temperature up to 400 °C. A strong increasing of the tandeltaoccurs at temperatures higher than 400 °C. In a general way, a decrease of the parameter tandelta occurs with the increasing frequency.ABM, ABC, ABPol2003-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000200008Materials Research v.6 n.2 2003reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392003000200008info:eu-repo/semantics/openAccessLanfredi,SilvaniaNobre,Marcos A. de Limaeng2003-07-03T00:00:00Zoai:scielo:S1516-14392003000200008Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2003-07-03T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Dielectric dispersion in Bi3Zn2Sb3O14 ceramic: a pyrochlore type phase
title Dielectric dispersion in Bi3Zn2Sb3O14 ceramic: a pyrochlore type phase
spellingShingle Dielectric dispersion in Bi3Zn2Sb3O14 ceramic: a pyrochlore type phase
Lanfredi,Silvania
varistor
pyrochlore
impedance spectroscopy
dielectric
title_short Dielectric dispersion in Bi3Zn2Sb3O14 ceramic: a pyrochlore type phase
title_full Dielectric dispersion in Bi3Zn2Sb3O14 ceramic: a pyrochlore type phase
title_fullStr Dielectric dispersion in Bi3Zn2Sb3O14 ceramic: a pyrochlore type phase
title_full_unstemmed Dielectric dispersion in Bi3Zn2Sb3O14 ceramic: a pyrochlore type phase
title_sort Dielectric dispersion in Bi3Zn2Sb3O14 ceramic: a pyrochlore type phase
author Lanfredi,Silvania
author_facet Lanfredi,Silvania
Nobre,Marcos A. de Lima
author_role author
author2 Nobre,Marcos A. de Lima
author2_role author
dc.contributor.author.fl_str_mv Lanfredi,Silvania
Nobre,Marcos A. de Lima
dc.subject.por.fl_str_mv varistor
pyrochlore
impedance spectroscopy
dielectric
topic varistor
pyrochlore
impedance spectroscopy
dielectric
description The electric and dielectric properties of Bi3Zn2Sb3O14 ceramic were studied by impedance spectroscopy. The measurements were performed in the frequency range 5 to 13 MHz and at temperature ranges from 25 to 700 °C. The permittivity was calculated by the variation of the imaginary part of the impedance (-Im(Z)) as function of 1/omega, where omega represents the angular frequency (2pif). The parameter epsilon = f(T) exhibits values in the range from 40 to 48. The dielectric losses (tandelta) show slight dependence with the temperature up to 400 °C. A strong increasing of the tandeltaoccurs at temperatures higher than 400 °C. In a general way, a decrease of the parameter tandelta occurs with the increasing frequency.
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=S1516-14392003000200008
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000200008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392003000200008
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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