Influence of Nb5+ and Sb3+ dopants on the defect profile, PTCR effect and GBBL characteristics of BaTiO3 ceramics

Autores
Brzozowski, E.; Castro, Miriam Susana
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work, a study of the electrical properties and defect structure of PTCR (positive temperature coefficient of resistance) and GBBL (grain boundary barrier layer) BaTiO3-based ceramics was performed. For this study, different concentrations of Nb5+ or Sb3+ were employed for doping BaTiO3. Based on the Heywang–Jonker model for PTCR materials, the density of acceptor states and the potential barrier height were calculated. Doping BaTiO3 with small amounts of Nb2O5 led to higher potential barriers than those in Sb2O3-doped ceramics. From EPR analyses performed on the complete set of samples, paramagnetic defects were investigated. Hence, a relationship between the defect profile developed in the BaTiO3 materials and the transition from a low resistivity to a high resistivity material was established. From this study, an increase in the titanium vacancies relative concentration along with an increment in the electrical resistivity measured at room temperature as the dopant content increases was confirmed.
Fil: Brzozowski, E.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Castro, Miriam Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Materia
BATIO3 AND TITANATES
DEFECTS
ELECTRICAL PROPERTIES
PTC DEVICES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/96352
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Influence of Nb5+ and Sb3+ dopants on the defect profile, PTCR effect and GBBL characteristics of BaTiO3 ceramicsBrzozowski, E.Castro, Miriam SusanaBATIO3 AND TITANATESDEFECTSELECTRICAL PROPERTIESPTC DEVICEShttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2In this work, a study of the electrical properties and defect structure of PTCR (positive temperature coefficient of resistance) and GBBL (grain boundary barrier layer) BaTiO3-based ceramics was performed. For this study, different concentrations of Nb5+ or Sb3+ were employed for doping BaTiO3. Based on the Heywang–Jonker model for PTCR materials, the density of acceptor states and the potential barrier height were calculated. Doping BaTiO3 with small amounts of Nb2O5 led to higher potential barriers than those in Sb2O3-doped ceramics. From EPR analyses performed on the complete set of samples, paramagnetic defects were investigated. Hence, a relationship between the defect profile developed in the BaTiO3 materials and the transition from a low resistivity to a high resistivity material was established. From this study, an increase in the titanium vacancies relative concentration along with an increment in the electrical resistivity measured at room temperature as the dopant content increases was confirmed.Fil: Brzozowski, E.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Castro, Miriam Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaElsevier2004-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/96352Brzozowski, E.; Castro, Miriam Susana; Influence of Nb5+ and Sb3+ dopants on the defect profile, PTCR effect and GBBL characteristics of BaTiO3 ceramics; Elsevier; Journal of the European Ceramic Society; 24; 8; 7-2004; 2499-25070955-2219CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0955221903006861info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jeurceramsoc.2003.07.015info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:57:40Zoai:ri.conicet.gov.ar:11336/96352instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:57:40.312CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Influence of Nb5+ and Sb3+ dopants on the defect profile, PTCR effect and GBBL characteristics of BaTiO3 ceramics
title Influence of Nb5+ and Sb3+ dopants on the defect profile, PTCR effect and GBBL characteristics of BaTiO3 ceramics
spellingShingle Influence of Nb5+ and Sb3+ dopants on the defect profile, PTCR effect and GBBL characteristics of BaTiO3 ceramics
Brzozowski, E.
BATIO3 AND TITANATES
DEFECTS
ELECTRICAL PROPERTIES
PTC DEVICES
title_short Influence of Nb5+ and Sb3+ dopants on the defect profile, PTCR effect and GBBL characteristics of BaTiO3 ceramics
title_full Influence of Nb5+ and Sb3+ dopants on the defect profile, PTCR effect and GBBL characteristics of BaTiO3 ceramics
title_fullStr Influence of Nb5+ and Sb3+ dopants on the defect profile, PTCR effect and GBBL characteristics of BaTiO3 ceramics
title_full_unstemmed Influence of Nb5+ and Sb3+ dopants on the defect profile, PTCR effect and GBBL characteristics of BaTiO3 ceramics
title_sort Influence of Nb5+ and Sb3+ dopants on the defect profile, PTCR effect and GBBL characteristics of BaTiO3 ceramics
dc.creator.none.fl_str_mv Brzozowski, E.
Castro, Miriam Susana
author Brzozowski, E.
author_facet Brzozowski, E.
Castro, Miriam Susana
author_role author
author2 Castro, Miriam Susana
author2_role author
dc.subject.none.fl_str_mv BATIO3 AND TITANATES
DEFECTS
ELECTRICAL PROPERTIES
PTC DEVICES
topic BATIO3 AND TITANATES
DEFECTS
ELECTRICAL PROPERTIES
PTC DEVICES
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv In this work, a study of the electrical properties and defect structure of PTCR (positive temperature coefficient of resistance) and GBBL (grain boundary barrier layer) BaTiO3-based ceramics was performed. For this study, different concentrations of Nb5+ or Sb3+ were employed for doping BaTiO3. Based on the Heywang–Jonker model for PTCR materials, the density of acceptor states and the potential barrier height were calculated. Doping BaTiO3 with small amounts of Nb2O5 led to higher potential barriers than those in Sb2O3-doped ceramics. From EPR analyses performed on the complete set of samples, paramagnetic defects were investigated. Hence, a relationship between the defect profile developed in the BaTiO3 materials and the transition from a low resistivity to a high resistivity material was established. From this study, an increase in the titanium vacancies relative concentration along with an increment in the electrical resistivity measured at room temperature as the dopant content increases was confirmed.
Fil: Brzozowski, E.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Castro, Miriam Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
description In this work, a study of the electrical properties and defect structure of PTCR (positive temperature coefficient of resistance) and GBBL (grain boundary barrier layer) BaTiO3-based ceramics was performed. For this study, different concentrations of Nb5+ or Sb3+ were employed for doping BaTiO3. Based on the Heywang–Jonker model for PTCR materials, the density of acceptor states and the potential barrier height were calculated. Doping BaTiO3 with small amounts of Nb2O5 led to higher potential barriers than those in Sb2O3-doped ceramics. From EPR analyses performed on the complete set of samples, paramagnetic defects were investigated. Hence, a relationship between the defect profile developed in the BaTiO3 materials and the transition from a low resistivity to a high resistivity material was established. From this study, an increase in the titanium vacancies relative concentration along with an increment in the electrical resistivity measured at room temperature as the dopant content increases was confirmed.
publishDate 2004
dc.date.none.fl_str_mv 2004-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/96352
Brzozowski, E.; Castro, Miriam Susana; Influence of Nb5+ and Sb3+ dopants on the defect profile, PTCR effect and GBBL characteristics of BaTiO3 ceramics; Elsevier; Journal of the European Ceramic Society; 24; 8; 7-2004; 2499-2507
0955-2219
CONICET Digital
CONICET
url http://hdl.handle.net/11336/96352
identifier_str_mv Brzozowski, E.; Castro, Miriam Susana; Influence of Nb5+ and Sb3+ dopants on the defect profile, PTCR effect and GBBL characteristics of BaTiO3 ceramics; Elsevier; Journal of the European Ceramic Society; 24; 8; 7-2004; 2499-2507
0955-2219
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0955221903006861
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jeurceramsoc.2003.07.015
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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