Mossbauer spectroscopy study of iron oxide nanoparticles obtained by spray pyrolysis

dc.contributor.authorMarques, Rodrigo Fernando Costa [UNESP]
dc.contributor.authorRodriguez, A. F. R.
dc.contributor.authorCoaquira, J. A. H.
dc.contributor.authorSantos, J. G.
dc.contributor.authorGarg, V. K.
dc.contributor.authorJafelicci, M. [UNESP]
dc.contributor.authorRibeiro, Sidney José Lima [UNESP]
dc.contributor.authorVerelst, M.
dc.contributor.authorDexpert-Ghys, J.
dc.contributor.authorMorais, P. C.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Rondônia (UNIR)
dc.contributor.institutionUniversidade de Brasília (UnB)
dc.contributor.institutionUniv Toulouse 3
dc.date.accessioned2014-05-20T15:32:35Z
dc.date.available2014-05-20T15:32:35Z
dc.date.issued2009-02-01
dc.description.abstractMossbauer spectroscopy was used in this study to investigate magnetite nanoparticles, obtained by spray pyrolysis and thermal treatment under H-2 reduction atmosphere. Room temperature XRD data indicate the formation of magnetite phase and a second phase (metallic iron) which amount increases as the time of reduction under H2 is increased. While room temperature Mossbauer data confirm the formation of the cubic phase of magnetite and the occurrence of metallic iron phase, the more complex features of 77 K-Mossbauer spectra suggest the occurrence of electronic localization favored by the different crystalline phase of magnetite at low temperatures which transition to the lower symmetry structure should occur at T similar to 120 K (Verwey transition).en
dc.description.affiliationUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationFundação Univ Fed Rondonia, Dept Fis, BR-78961970 Ji Parana, RO, Brazil
dc.description.affiliationUniversidade de Brasilia (UnB), Inst Fis, Nucleo Fis Aplicada, BR-70910900 Brasilia, DF, Brazil
dc.description.affiliationUniv Toulouse 3, Ctr Elaborat Mat & Etud Struct, UPR 8011, F-31044 Toulouse, France
dc.description.affiliationUnespUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.format.extent159-166
dc.identifierhttp://dx.doi.org/10.1007/s10751-009-9911-1
dc.identifier.citationHyperfine Interactions. Dordrecht: Springer, v. 189, n. 1-3, p. 159-166, 2009.
dc.identifier.doi10.1007/s10751-009-9911-1
dc.identifier.issn0304-3843
dc.identifier.lattes2115942621694174
dc.identifier.lattes6446047463034654
dc.identifier.orcid0000-0003-3286-9440
dc.identifier.orcid0000-0003-0195-3885
dc.identifier.urihttp://hdl.handle.net/11449/41450
dc.identifier.wosWOS:000313344800020
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofHyperfine Interactions
dc.relation.ispartofsjr0,368
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectMagnetiteen
dc.subjectHematiteen
dc.subjectSpray pyrolysisen
dc.subjectMossbauer spectroscopyen
dc.titleMossbauer spectroscopy study of iron oxide nanoparticles obtained by spray pyrolysisen
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
unesp.author.lattes6446047463034654
unesp.author.lattes2115942621694174[1]
unesp.author.orcid0000-0003-0195-3885[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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