Positron trapping in BaTiO3 perovskite

Autores
Macchi, Carlos Eugenio; Somoza, A.; Dupasquier, A.; Lopez Garcia, Alberto Raul; Castro, Miriam Susana
Año de publicación
2001
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Positron lifetime spectra in BaTiO3 single crystals were measured at temperatures up to 873 K, also at room temperature after quenching from temperatures up to 473 K. The explored temperature range includes the ferroelectric to paraelectric phase transition. The material displays an irreversible behaviour when heated, with anomalies around TC. The temperature dependence of the positron lifetime becomes reversible only after annealing above 550 K. The results suggest modifications of the charge state of non-equilibrium vacancies occurring at moderate temperature and microstructural changes taking place at high temperature. The reversible behaviour of the annealed crystal is consistent with thermally activated positron trap formation.
Fil: Macchi, Carlos Eugenio. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; Argentina
Fil: Somoza, A.. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; Argentina
Fil: Dupasquier, A.. Politecnico di Milano; Italia
Fil: Lopez Garcia, Alberto Raul. Universidad Nacional de La Plata; 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
Ferroelectric
Positron Annihilation
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:11336/36694
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Positron trapping in BaTiO3 perovskiteMacchi, Carlos EugenioSomoza, A.Dupasquier, A.Lopez Garcia, Alberto RaulCastro, Miriam SusanaBatio3FerroelectricPositron Annihilationhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Positron lifetime spectra in BaTiO3 single crystals were measured at temperatures up to 873 K, also at room temperature after quenching from temperatures up to 473 K. The explored temperature range includes the ferroelectric to paraelectric phase transition. The material displays an irreversible behaviour when heated, with anomalies around TC. The temperature dependence of the positron lifetime becomes reversible only after annealing above 550 K. The results suggest modifications of the charge state of non-equilibrium vacancies occurring at moderate temperature and microstructural changes taking place at high temperature. The reversible behaviour of the annealed crystal is consistent with thermally activated positron trap formation.Fil: Macchi, Carlos Eugenio. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; ArgentinaFil: Somoza, A.. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; ArgentinaFil: Dupasquier, A.. Politecnico di Milano; ItaliaFil: Lopez Garcia, Alberto Raul. Universidad Nacional de La Plata; 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; ArgentinaIOP Publishing2001-04-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/36694Macchi, Carlos Eugenio; Somoza, A.; Dupasquier, A.; Lopez Garcia, Alberto Raul; Castro, Miriam Susana; Positron trapping in BaTiO3 perovskite; IOP Publishing; Journal of Physics: Condensed Matter; 13; 24; 11-4-2001; 5717-57220953-8984CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0953-8984/13/24/316info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-8984/13/24/316info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:00:33Zoai:ri.conicet.gov.ar:11336/36694instacron: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:34982025-09-03 10:00:33.399CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Positron trapping in BaTiO3 perovskite
title Positron trapping in BaTiO3 perovskite
spellingShingle Positron trapping in BaTiO3 perovskite
Macchi, Carlos Eugenio
Batio3
Ferroelectric
Positron Annihilation
title_short Positron trapping in BaTiO3 perovskite
title_full Positron trapping in BaTiO3 perovskite
title_fullStr Positron trapping in BaTiO3 perovskite
title_full_unstemmed Positron trapping in BaTiO3 perovskite
title_sort Positron trapping in BaTiO3 perovskite
dc.creator.none.fl_str_mv Macchi, Carlos Eugenio
Somoza, A.
Dupasquier, A.
Lopez Garcia, Alberto Raul
Castro, Miriam Susana
author Macchi, Carlos Eugenio
author_facet Macchi, Carlos Eugenio
Somoza, A.
Dupasquier, A.
Lopez Garcia, Alberto Raul
Castro, Miriam Susana
author_role author
author2 Somoza, A.
Dupasquier, A.
Lopez Garcia, Alberto Raul
Castro, Miriam Susana
author2_role author
author
author
author
dc.subject.none.fl_str_mv Batio3
Ferroelectric
Positron Annihilation
topic Batio3
Ferroelectric
Positron Annihilation
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Positron lifetime spectra in BaTiO3 single crystals were measured at temperatures up to 873 K, also at room temperature after quenching from temperatures up to 473 K. The explored temperature range includes the ferroelectric to paraelectric phase transition. The material displays an irreversible behaviour when heated, with anomalies around TC. The temperature dependence of the positron lifetime becomes reversible only after annealing above 550 K. The results suggest modifications of the charge state of non-equilibrium vacancies occurring at moderate temperature and microstructural changes taking place at high temperature. The reversible behaviour of the annealed crystal is consistent with thermally activated positron trap formation.
Fil: Macchi, Carlos Eugenio. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; Argentina
Fil: Somoza, A.. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; Argentina
Fil: Dupasquier, A.. Politecnico di Milano; Italia
Fil: Lopez Garcia, Alberto Raul. Universidad Nacional de La Plata; 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 Positron lifetime spectra in BaTiO3 single crystals were measured at temperatures up to 873 K, also at room temperature after quenching from temperatures up to 473 K. The explored temperature range includes the ferroelectric to paraelectric phase transition. The material displays an irreversible behaviour when heated, with anomalies around TC. The temperature dependence of the positron lifetime becomes reversible only after annealing above 550 K. The results suggest modifications of the charge state of non-equilibrium vacancies occurring at moderate temperature and microstructural changes taking place at high temperature. The reversible behaviour of the annealed crystal is consistent with thermally activated positron trap formation.
publishDate 2001
dc.date.none.fl_str_mv 2001-04-11
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/11336/36694
Macchi, Carlos Eugenio; Somoza, A.; Dupasquier, A.; Lopez Garcia, Alberto Raul; Castro, Miriam Susana; Positron trapping in BaTiO3 perovskite; IOP Publishing; Journal of Physics: Condensed Matter; 13; 24; 11-4-2001; 5717-5722
0953-8984
CONICET Digital
CONICET
url http://hdl.handle.net/11336/36694
identifier_str_mv Macchi, Carlos Eugenio; Somoza, A.; Dupasquier, A.; Lopez Garcia, Alberto Raul; Castro, Miriam Susana; Positron trapping in BaTiO3 perovskite; IOP Publishing; Journal of Physics: Condensed Matter; 13; 24; 11-4-2001; 5717-5722
0953-8984
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0953-8984/13/24/316
info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-8984/13/24/316
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 IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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 13.13397

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