Piezoresponse force microscopy behaviour of Bi4Ti3O12 ceramics with various excess bismuth
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://www.tf.uns.ac.rs/publikacije/PAC/tablesofcontents.html http://hdl.handle.net/11449/123487 |
Resumo: | Bismuth titanate (Bi4 Ti3 O12 - BIT) ceramics derived from different amounts of excess Bi2 O3 were prepared using the polymeric precursor method. In spite of excess bismuth, single phase ceramics were obtained with a controlled microstructure. Raman analysis evidenced typical vibrational bands of the BIT phase. UV-vis spectra indicated that excess Bi2 O3 causes a reduction in defects in the BIT lattice due to the suppression of oxygen vacancies located at the octahedral BO6 – ion. The microstructure and electrical properties are strongly dependent on the excess Bi2 O3 . Appropriate initial Bi2 O3 excess reduces the leakage current and loss tangent and thereby improves the polarization of BIT ceramics. Rietveld analyses confirmed that the powders crystallize in an orthorhombic structure with a space group of Fmmm at room temperature. The polarization reversal was investigated by applying ac voltage through a conductive tip during the area scanning and was investigated by piezoresponse force microscopy (PFM). |
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Piezoresponse force microscopy behaviour of Bi4Ti3O12 ceramics with various excess bismuthbismuth titanatechemical synthesisannealingdielectric propertiesBismuth titanate (Bi4 Ti3 O12 - BIT) ceramics derived from different amounts of excess Bi2 O3 were prepared using the polymeric precursor method. In spite of excess bismuth, single phase ceramics were obtained with a controlled microstructure. Raman analysis evidenced typical vibrational bands of the BIT phase. UV-vis spectra indicated that excess Bi2 O3 causes a reduction in defects in the BIT lattice due to the suppression of oxygen vacancies located at the octahedral BO6 – ion. The microstructure and electrical properties are strongly dependent on the excess Bi2 O3 . Appropriate initial Bi2 O3 excess reduces the leakage current and loss tangent and thereby improves the polarization of BIT ceramics. Rietveld analyses confirmed that the powders crystallize in an orthorhombic structure with a space group of Fmmm at room temperature. The polarization reversal was investigated by applying ac voltage through a conductive tip during the area scanning and was investigated by piezoresponse force microscopy (PFM).Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Universidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Físico-Química, Instituto de Química de Araraquara, Araraquara, Rua Professor Francisco Degni s/n, Quitandinha, CEP 14800900, SP, BrasilUniversidade Estadual Paulista Júlio de Mesquita Filho, Instituto de Química de Araraquara, Departamento de Físico-QuímicaUniversidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Engenharia de GuaratinguetáUniversidade Estadual Paulista (Unesp)Universidade Federal de Itajubá (UNIFEI)Aguiar, Ederson Carlos [UNESP]Simões, Alexandre Zirpoli [UNESP]Moura, FranciscoCilense, Mário [UNESP]Longo, Elson [UNESP]Varela, José Arana [UNESP]2015-05-15T13:30:17Z2015-05-15T13:30:17Z2011info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1-11application/pdfhttp://www.tf.uns.ac.rs/publikacije/PAC/tablesofcontents.htmlProcessing and Application of Ceramics, v. 5, n. 1, p. 1-11, 2011.1820-6131http://hdl.handle.net/11449/12348710.2298/PAC1101001AISSN1820-6131-2011-05-01-01-11.pdf933047003661351147588298973735729128353103083394180739921423920035733634866149049848311210578810Currículo Lattesreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProcessing and Application of Ceramics1.1520,318info:eu-repo/semantics/openAccess2023-12-15T06:14:50Zoai:repositorio.unesp.br:11449/123487Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-15T06:14:50Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Piezoresponse force microscopy behaviour of Bi4Ti3O12 ceramics with various excess bismuth |
title |
Piezoresponse force microscopy behaviour of Bi4Ti3O12 ceramics with various excess bismuth |
spellingShingle |
Piezoresponse force microscopy behaviour of Bi4Ti3O12 ceramics with various excess bismuth Aguiar, Ederson Carlos [UNESP] bismuth titanate chemical synthesis annealing dielectric properties |
title_short |
Piezoresponse force microscopy behaviour of Bi4Ti3O12 ceramics with various excess bismuth |
title_full |
Piezoresponse force microscopy behaviour of Bi4Ti3O12 ceramics with various excess bismuth |
title_fullStr |
Piezoresponse force microscopy behaviour of Bi4Ti3O12 ceramics with various excess bismuth |
title_full_unstemmed |
Piezoresponse force microscopy behaviour of Bi4Ti3O12 ceramics with various excess bismuth |
title_sort |
Piezoresponse force microscopy behaviour of Bi4Ti3O12 ceramics with various excess bismuth |
author |
Aguiar, Ederson Carlos [UNESP] |
author_facet |
Aguiar, Ederson Carlos [UNESP] Simões, Alexandre Zirpoli [UNESP] Moura, Francisco Cilense, Mário [UNESP] Longo, Elson [UNESP] Varela, José Arana [UNESP] |
author_role |
author |
author2 |
Simões, Alexandre Zirpoli [UNESP] Moura, Francisco Cilense, Mário [UNESP] Longo, Elson [UNESP] Varela, José Arana [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal de Itajubá (UNIFEI) |
dc.contributor.author.fl_str_mv |
Aguiar, Ederson Carlos [UNESP] Simões, Alexandre Zirpoli [UNESP] Moura, Francisco Cilense, Mário [UNESP] Longo, Elson [UNESP] Varela, José Arana [UNESP] |
dc.subject.por.fl_str_mv |
bismuth titanate chemical synthesis annealing dielectric properties |
topic |
bismuth titanate chemical synthesis annealing dielectric properties |
description |
Bismuth titanate (Bi4 Ti3 O12 - BIT) ceramics derived from different amounts of excess Bi2 O3 were prepared using the polymeric precursor method. In spite of excess bismuth, single phase ceramics were obtained with a controlled microstructure. Raman analysis evidenced typical vibrational bands of the BIT phase. UV-vis spectra indicated that excess Bi2 O3 causes a reduction in defects in the BIT lattice due to the suppression of oxygen vacancies located at the octahedral BO6 – ion. The microstructure and electrical properties are strongly dependent on the excess Bi2 O3 . Appropriate initial Bi2 O3 excess reduces the leakage current and loss tangent and thereby improves the polarization of BIT ceramics. Rietveld analyses confirmed that the powders crystallize in an orthorhombic structure with a space group of Fmmm at room temperature. The polarization reversal was investigated by applying ac voltage through a conductive tip during the area scanning and was investigated by piezoresponse force microscopy (PFM). |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011 2015-05-15T13:30:17Z 2015-05-15T13:30:17Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.tf.uns.ac.rs/publikacije/PAC/tablesofcontents.html Processing and Application of Ceramics, v. 5, n. 1, p. 1-11, 2011. 1820-6131 http://hdl.handle.net/11449/123487 10.2298/PAC1101001A ISSN1820-6131-2011-05-01-01-11.pdf 9330470036613511 4758829897373572 9128353103083394 1807399214239200 3573363486614904 9848311210578810 |
url |
http://www.tf.uns.ac.rs/publikacije/PAC/tablesofcontents.html http://hdl.handle.net/11449/123487 |
identifier_str_mv |
Processing and Application of Ceramics, v. 5, n. 1, p. 1-11, 2011. 1820-6131 10.2298/PAC1101001A ISSN1820-6131-2011-05-01-01-11.pdf 9330470036613511 4758829897373572 9128353103083394 1807399214239200 3573363486614904 9848311210578810 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Processing and Application of Ceramics 1.152 0,318 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1-11 application/pdf |
dc.source.none.fl_str_mv |
Currículo Lattes reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1797790005229256704 |