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Influence of the modifier on the short and long range disorder of stannate perovskites

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dc.contributor.authorAlves, Mary C. F.
dc.contributor.authorSouza, Soraia C.
dc.contributor.authorLima, Hebert H. S.
dc.contributor.authorNascimento, Marcelo R.
dc.contributor.authorSilva, Maria R. S.
dc.contributor.authorEspinosa, Jose Waldo M.
dc.contributor.authorLima, Severino J. G.
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorPizani, P. S.
dc.contributor.authorSoledade, Luiz E. B.
dc.contributor.authorSouza, Antonio G.
dc.contributor.authorSantos, Ieda M. G.
dc.contributor.institutionUniversidade Federal da Paraíba (UFPB)
dc.contributor.institutionEAFS
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2014-05-20T15:31:27Z
dc.date.available2014-05-20T15:31:27Z
dc.date.issued2009-05-12
dc.description.abstractCa(1-x)Sr(x)SnO(3) powders (x = 0, 0.25,0.50,0.75 and 1) were synthesized by the polymeric precursor method. This method is derived from the Pechini one, being quite simple, yielding a high chemical homogeneity. This work aims at evaluating the influence of the modifier (Sr(2+) and/or Ca(2+)) on the properties of stannates with perovskite structure. The powders were characterized by XRD, Raman and FTIR. The increase of the Sr(2+) concentration in the Ca(1-x)Sr(x)SnO(3) system promotes a high short range organization between the polyhedra, diminishing the high degree of distortions of CaSnO(3) orthorhombic perovskite. on the other hand, it was verified that the samples that with a higher concentration of Ca(2+) show a higher short range organization within the polyhedra (SnO(6)). As a consequence pure SrSnO(3) presents higher long range order, crystallizing at lower temperature. (C) 2008 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniversidade Federal da Paraíba (UFPB), CCEN, Dept Quim, LACOM, BR-58059900 Joao Pessoa, Paraiba, Brazil
dc.description.affiliationEAFS, PB, Sousa, PB, Brazil
dc.description.affiliationUniversidade Federal da Paraíba (UFPB), CT, Dept Engn Mecan, LSR, Joao Pessoa, Paraiba, Brazil
dc.description.affiliationUNESP, Inst Quim, LIEC, CMDMC, Araraquara, SP, Brazil
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), Dept Fis, BR-13560 São Carlos, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, LIEC, CMDMC, Araraquara, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Apoio à Pesquisa do Estado da Paraíba (FAPESQPB)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent507-512
dc.identifierhttp://dx.doi.org/10.1016/j.jallcom.2008.09.034
dc.identifier.citationJournal of Alloys and Compounds. Lausanne: Elsevier B.V. Sa, v. 476, n. 1-2, p. 507-512, 2009.
dc.identifier.doi10.1016/j.jallcom.2008.09.034
dc.identifier.issn0925-8388
dc.identifier.urihttp://hdl.handle.net/11449/40578
dc.identifier.wosWOS:000266117900099
dc.language.isoeng
dc.publisherElsevier B.V. Sa
dc.relation.ispartofJournal of Alloys and Compounds
dc.relation.ispartofjcr3.779
dc.relation.ispartofsjr1,020
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectChemical synthesisen
dc.subjectCrystal structureen
dc.subjectPhase transitionsen
dc.subjectX-ray diffractionen
dc.subjectOrder-disorder effectsen
dc.titleInfluence of the modifier on the short and long range disorder of stannate perovskitesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V. Sa
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentBioquímica e Tecnologia - IQpt

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Araraquara - IQAR - Instituto de Química