Electron paramagnetic resonance and positron annihilation study of the compensation mechanisms in donor-doped BaTiO3 ceramics

Autores
Castro, Miriam Susana; Salgueiro, Walter Alberto; Somoza, Alberto Horacio
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A study of the defect structure of BaTiO3-based ceramics and their correlation with the compensation mechanisms is presented. The addition of different Nb2 O5, Sb2 O3 or La2 O3 oxide contents (ranging from 0.05 to 0.60 mol%) to commercial BaTiO3 powders allowed to obtain the sintered specimens. EPR spectroscopy was used to characterize the paramagnetic species in the crushed samples. Information regarding bulk and vacancy-like defects in the studied specimens was also obtained using positron annihilation lifetime spectroscopy. Also, complementary analysis through tetragonality parameters and measurements on the real permittivity were carried out. The obtained results show a dependence of the defect profile of the BaTiO3-based specimens on the concentration and type of additive. For high additive content samples, titanium point-like defects were detected; while barium vacancies were detected in samples with low antimony content. Furthermore, oxygen vacancies were revealed in samples with low lanthanum addition. A relationship among the doping level and defect structure is proposed.
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
Fil: Salgueiro, Walter Alberto. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; Argentina
Fil: Somoza, Alberto Horacio. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
Materia
A. Electronic Materials
C. Positron Annihilation Spectroscopy
D. Defects
D. Electron Paramagnetic Resonance (Epr)
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/70500
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/70500
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Electron paramagnetic resonance and positron annihilation study of the compensation mechanisms in donor-doped BaTiO3 ceramicsCastro, Miriam SusanaSalgueiro, Walter AlbertoSomoza, Alberto HoracioA. Electronic MaterialsC. Positron Annihilation SpectroscopyD. DefectsD. Electron Paramagnetic Resonance (Epr)https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1A study of the defect structure of BaTiO3-based ceramics and their correlation with the compensation mechanisms is presented. The addition of different Nb2 O5, Sb2 O3 or La2 O3 oxide contents (ranging from 0.05 to 0.60 mol%) to commercial BaTiO3 powders allowed to obtain the sintered specimens. EPR spectroscopy was used to characterize the paramagnetic species in the crushed samples. Information regarding bulk and vacancy-like defects in the studied specimens was also obtained using positron annihilation lifetime spectroscopy. Also, complementary analysis through tetragonality parameters and measurements on the real permittivity were carried out. The obtained results show a dependence of the defect profile of the BaTiO3-based specimens on the concentration and type of additive. For high additive content samples, titanium point-like defects were detected; while barium vacancies were detected in samples with low antimony content. Furthermore, oxygen vacancies were revealed in samples with low lanthanum addition. A relationship among the doping level and defect structure is proposed.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; ArgentinaFil: Salgueiro, Walter Alberto. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; ArgentinaFil: Somoza, Alberto Horacio. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; ArgentinaPergamon-Elsevier Science Ltd2007-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/70500Castro, Miriam Susana; Salgueiro, Walter Alberto; Somoza, Alberto Horacio; Electron paramagnetic resonance and positron annihilation study of the compensation mechanisms in donor-doped BaTiO3 ceramics; Pergamon-Elsevier Science Ltd; Journal of Physics and Chemistry of Solids; 68; 7; 7-2007; 1315-13230022-3697CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jpcs.2007.02.017info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0022369707000881info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:39:33Zoai:ri.conicet.gov.ar:11336/70500instacron: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:34982025-09-29 10:39:33.233CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Electron paramagnetic resonance and positron annihilation study of the compensation mechanisms in donor-doped BaTiO3 ceramics
title Electron paramagnetic resonance and positron annihilation study of the compensation mechanisms in donor-doped BaTiO3 ceramics
spellingShingle Electron paramagnetic resonance and positron annihilation study of the compensation mechanisms in donor-doped BaTiO3 ceramics
Castro, Miriam Susana
A. Electronic Materials
C. Positron Annihilation Spectroscopy
D. Defects
D. Electron Paramagnetic Resonance (Epr)
title_short Electron paramagnetic resonance and positron annihilation study of the compensation mechanisms in donor-doped BaTiO3 ceramics
title_full Electron paramagnetic resonance and positron annihilation study of the compensation mechanisms in donor-doped BaTiO3 ceramics
title_fullStr Electron paramagnetic resonance and positron annihilation study of the compensation mechanisms in donor-doped BaTiO3 ceramics
title_full_unstemmed Electron paramagnetic resonance and positron annihilation study of the compensation mechanisms in donor-doped BaTiO3 ceramics
title_sort Electron paramagnetic resonance and positron annihilation study of the compensation mechanisms in donor-doped BaTiO3 ceramics
dc.creator.none.fl_str_mv Castro, Miriam Susana
Salgueiro, Walter Alberto
Somoza, Alberto Horacio
author Castro, Miriam Susana
author_facet Castro, Miriam Susana
Salgueiro, Walter Alberto
Somoza, Alberto Horacio
author_role author
author2 Salgueiro, Walter Alberto
Somoza, Alberto Horacio
author2_role author
author
dc.subject.none.fl_str_mv A. Electronic Materials
C. Positron Annihilation Spectroscopy
D. Defects
D. Electron Paramagnetic Resonance (Epr)
topic A. Electronic Materials
C. Positron Annihilation Spectroscopy
D. Defects
D. Electron Paramagnetic Resonance (Epr)
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A study of the defect structure of BaTiO3-based ceramics and their correlation with the compensation mechanisms is presented. The addition of different Nb2 O5, Sb2 O3 or La2 O3 oxide contents (ranging from 0.05 to 0.60 mol%) to commercial BaTiO3 powders allowed to obtain the sintered specimens. EPR spectroscopy was used to characterize the paramagnetic species in the crushed samples. Information regarding bulk and vacancy-like defects in the studied specimens was also obtained using positron annihilation lifetime spectroscopy. Also, complementary analysis through tetragonality parameters and measurements on the real permittivity were carried out. The obtained results show a dependence of the defect profile of the BaTiO3-based specimens on the concentration and type of additive. For high additive content samples, titanium point-like defects were detected; while barium vacancies were detected in samples with low antimony content. Furthermore, oxygen vacancies were revealed in samples with low lanthanum addition. A relationship among the doping level and defect structure is proposed.
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
Fil: Salgueiro, Walter Alberto. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; Argentina
Fil: Somoza, Alberto Horacio. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
description A study of the defect structure of BaTiO3-based ceramics and their correlation with the compensation mechanisms is presented. The addition of different Nb2 O5, Sb2 O3 or La2 O3 oxide contents (ranging from 0.05 to 0.60 mol%) to commercial BaTiO3 powders allowed to obtain the sintered specimens. EPR spectroscopy was used to characterize the paramagnetic species in the crushed samples. Information regarding bulk and vacancy-like defects in the studied specimens was also obtained using positron annihilation lifetime spectroscopy. Also, complementary analysis through tetragonality parameters and measurements on the real permittivity were carried out. The obtained results show a dependence of the defect profile of the BaTiO3-based specimens on the concentration and type of additive. For high additive content samples, titanium point-like defects were detected; while barium vacancies were detected in samples with low antimony content. Furthermore, oxygen vacancies were revealed in samples with low lanthanum addition. A relationship among the doping level and defect structure is proposed.
publishDate 2007
dc.date.none.fl_str_mv 2007-07
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/11336/70500
Castro, Miriam Susana; Salgueiro, Walter Alberto; Somoza, Alberto Horacio; Electron paramagnetic resonance and positron annihilation study of the compensation mechanisms in donor-doped BaTiO3 ceramics; Pergamon-Elsevier Science Ltd; Journal of Physics and Chemistry of Solids; 68; 7; 7-2007; 1315-1323
0022-3697
CONICET Digital
CONICET
url http://hdl.handle.net/11336/70500
identifier_str_mv Castro, Miriam Susana; Salgueiro, Walter Alberto; Somoza, Alberto Horacio; Electron paramagnetic resonance and positron annihilation study of the compensation mechanisms in donor-doped BaTiO3 ceramics; Pergamon-Elsevier Science Ltd; Journal of Physics and Chemistry of Solids; 68; 7; 7-2007; 1315-1323
0022-3697
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jpcs.2007.02.017
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0022369707000881
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
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 13.070432

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