Logo do repositório
 

Synthesis of (Ca,Nd)TiO3 powders by complex polymerization, Rietveld refinement and optical properties

Página do item simplificado
dc.contributor.authorMarques, V. S.
dc.contributor.authorCavalcante, L. S.
dc.contributor.authorSczancoski, J. C.
dc.contributor.authorParis, E. C.
dc.contributor.authorTeixeira, J. M. C.
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorVicente, Fábio Simões de [UNESP]
dc.contributor.authorJoya, M. R.
dc.contributor.authorPizani, P. S.
dc.contributor.authorLi, M. Siu
dc.contributor.authorSantos, M. R. M. C.
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Federal do Piauí (UFPI)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2013-09-30T18:50:58Z
dc.date.accessioned2014-05-20T14:16:40Z
dc.date.available2013-09-30T18:50:58Z
dc.date.available2014-05-20T14:16:40Z
dc.date.issued2009-12-01
dc.description.abstractNeodymium calcium titanate, (Ca0.99Nd0.01)TiO3 powders were synthesized by the complex polymerization method and heat treated at different temperatures for 2 h under air atmosphere. The structural evolution of these powders as a function of heat treatment temperature was analyzed by X-ray diffraction (XRD) and micro-Raman (MR) spectroscopy. The optical properties were investigated by Ultraviolet-visible (UV-vis) absorption spectroscopy and Photoluminescence (PL) measurements. XRD patterns, Rietveld refinement and MR spectra indicated that the powders heated treated at 750 degrees C for 2 h present an orthorhombic structure without secondary phases. UV-vis measurements suggested the presence of intermediary energy in disordered (Ca0.99Nd0.01)TiO3 powders. Broad and narrow bands were observed in the PL spectra of these powders when excited with 350 nm wavelength. The broad bands were associated to the structural defects and/or p-d electronic transitions while, the narrow bands were ascribed to f-f transitions arising from Nd3+ ions. (C) 2009 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), Dept Quim Fis, BR-13565905 São Paulo, Brazil
dc.description.affiliationUniv Fed Piaui, CCN Quim, BR-64049550 Teresina, PI, Brazil
dc.description.affiliationUNESP, Inst Quim, BR-14801907 Araraquara, SP, Brazil
dc.description.affiliationUSP, Inst Fis São Carlos, BR-13560970 São Carlos, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, BR-14801907 Araraquara, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent1050-1059
dc.identifierhttp://dx.doi.org/10.1016/j.saa.2009.08.049
dc.identifier.citationSpectrochimica Acta Part A-molecular and Biomolecular Spectroscopy. Oxford: Pergamon-Elsevier B.V. Ltd, v. 74, n. 5, p. 1050-1059, 2009.
dc.identifier.doi10.1016/j.saa.2009.08.049
dc.identifier.issn1386-1425
dc.identifier.lattes8408216349957378
dc.identifier.orcid0000-0001-7696-3004
dc.identifier.urihttp://hdl.handle.net/11449/25017
dc.identifier.wosWOS:000272431500008
dc.language.isoeng
dc.publisherPergamon-Elsevier B.V. Ltd
dc.relation.ispartofSpectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
dc.relation.ispartofjcr2.880
dc.relation.ispartofsjr0,648
dc.rights.accessRightsAcesso restritopt
dc.sourceWeb of Science
dc.subject(Ca0.99Nd0.01)TiO3en
dc.subjectRietveld refinementen
dc.subjectf-f transitionsen
dc.subjectPhotoluminescenceen
dc.titleSynthesis of (Ca,Nd)TiO3 powders by complex polymerization, Rietveld refinement and optical propertiesen
dc.typeArtigopt
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderPergamon-Elsevier B.V. Ltd
dspace.entity.typePublication
relation.isOrgUnitOfPublicationbc74a1ce-4c4c-4dad-8378-83962d76c4fd
relation.isOrgUnitOfPublication.latestForDiscoverybc74a1ce-4c4c-4dad-8378-83962d76c4fd
unesp.author.lattes8408216349957378[7]
unesp.author.orcid0000-0001-7696-3004[7]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Geociências e Ciências Exatas, Rio Claropt
unesp.departmentFísica - IGCEpt
unesp.departmentBioquímica e Tecnologia - IQARpt
unesp.departmentFísico-Química - IQARpt

Arquivos

Licença do pacote

Agora exibindo 1 - 2 de 2
Imagem de Miniatura
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Imagem de Miniatura
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Araraquara - IQAR - Instituto de Química
Rio Claro - IGCE - Instituto de Geociências e Ciências Exatas