Dielectric and Raman spectroscopy studies of (Na0.5Bi0.5)TiO3 lead-free ceramic

Detalhes bibliográficos
Autor(a) principal: Zeroual,S.
Data de Publicação: 2019
Outros Autores: Lidjici,H., Chatta,W., Khemakhem,H.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Cerâmica (São Paulo. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000200222
Resumo: Abstract In this study, samples of sodium bismuth titanate (Na0.5Bi0.5)TiO3 (NBT) have been prepared using the solid-state technique. Sintering was done at 1200 ºC for 4 h in air atmosphere. X-ray diffraction analysis carried out at room temperature showed the formation of a single-phase compound with a rhombohedral crystal system. Dielectric and Raman spectroscopic characterizations have been performed as a function of temperature. The dielectric study showed the existence of a diffuse phase transition around 330 ºC. The Raman spectra was fitted to the individual Raman peaks. The obtained peaks were analyzed by observing the changes in their respective peak positions and intensities with increasing of temperature. At high temperatures, the results showed discontinuous changes in the phonon frequencies across the rhombohedral-tetragonal transition.
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spelling Dielectric and Raman spectroscopy studies of (Na0.5Bi0.5)TiO3 lead-free ceramicNBT ceramicperovskitedielectric propertiesRaman spectroscopyAbstract In this study, samples of sodium bismuth titanate (Na0.5Bi0.5)TiO3 (NBT) have been prepared using the solid-state technique. Sintering was done at 1200 ºC for 4 h in air atmosphere. X-ray diffraction analysis carried out at room temperature showed the formation of a single-phase compound with a rhombohedral crystal system. Dielectric and Raman spectroscopic characterizations have been performed as a function of temperature. The dielectric study showed the existence of a diffuse phase transition around 330 ºC. The Raman spectra was fitted to the individual Raman peaks. The obtained peaks were analyzed by observing the changes in their respective peak positions and intensities with increasing of temperature. At high temperatures, the results showed discontinuous changes in the phonon frequencies across the rhombohedral-tetragonal transition.Associação Brasileira de Cerâmica2019-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000200222Cerâmica v.65 n.374 2019reponame:Cerâmica (São Paulo. Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/0366-69132019653742627info:eu-repo/semantics/openAccessZeroual,S.Lidjici,H.Chatta,W.Khemakhem,H.eng2019-06-04T00:00:00Zoai:scielo:S0366-69132019000200222Revistahttps://www.scielo.br/j/ce/PUBhttps://old.scielo.br/oai/scielo-oai.phpceram.abc@gmail.com||ceram.abc@gmail.com1678-45530366-6913opendoar:2019-06-04T00:00Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Dielectric and Raman spectroscopy studies of (Na0.5Bi0.5)TiO3 lead-free ceramic
title Dielectric and Raman spectroscopy studies of (Na0.5Bi0.5)TiO3 lead-free ceramic
spellingShingle Dielectric and Raman spectroscopy studies of (Na0.5Bi0.5)TiO3 lead-free ceramic
Zeroual,S.
NBT ceramic
perovskite
dielectric properties
Raman spectroscopy
title_short Dielectric and Raman spectroscopy studies of (Na0.5Bi0.5)TiO3 lead-free ceramic
title_full Dielectric and Raman spectroscopy studies of (Na0.5Bi0.5)TiO3 lead-free ceramic
title_fullStr Dielectric and Raman spectroscopy studies of (Na0.5Bi0.5)TiO3 lead-free ceramic
title_full_unstemmed Dielectric and Raman spectroscopy studies of (Na0.5Bi0.5)TiO3 lead-free ceramic
title_sort Dielectric and Raman spectroscopy studies of (Na0.5Bi0.5)TiO3 lead-free ceramic
author Zeroual,S.
author_facet Zeroual,S.
Lidjici,H.
Chatta,W.
Khemakhem,H.
author_role author
author2 Lidjici,H.
Chatta,W.
Khemakhem,H.
author2_role author
author
author
dc.contributor.author.fl_str_mv Zeroual,S.
Lidjici,H.
Chatta,W.
Khemakhem,H.
dc.subject.por.fl_str_mv NBT ceramic
perovskite
dielectric properties
Raman spectroscopy
topic NBT ceramic
perovskite
dielectric properties
Raman spectroscopy
description Abstract In this study, samples of sodium bismuth titanate (Na0.5Bi0.5)TiO3 (NBT) have been prepared using the solid-state technique. Sintering was done at 1200 ºC for 4 h in air atmosphere. X-ray diffraction analysis carried out at room temperature showed the formation of a single-phase compound with a rhombohedral crystal system. Dielectric and Raman spectroscopic characterizations have been performed as a function of temperature. The dielectric study showed the existence of a diffuse phase transition around 330 ºC. The Raman spectra was fitted to the individual Raman peaks. The obtained peaks were analyzed by observing the changes in their respective peak positions and intensities with increasing of temperature. At high temperatures, the results showed discontinuous changes in the phonon frequencies across the rhombohedral-tetragonal transition.
publishDate 2019
dc.date.none.fl_str_mv 2019-06-01
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=S0366-69132019000200222
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000200222
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0366-69132019653742627
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 Associação Brasileira de Cerâmica
publisher.none.fl_str_mv Associação Brasileira de Cerâmica
dc.source.none.fl_str_mv Cerâmica v.65 n.374 2019
reponame:Cerâmica (São Paulo. Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Cerâmica (São Paulo. Online)
collection Cerâmica (São Paulo. Online)
repository.name.fl_str_mv Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ceram.abc@gmail.com||ceram.abc@gmail.com
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