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Magnetic properties of spindle-type iron fine particles obtained from hematite

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dc.contributor.authorVaranda, L. C. [UNESP]
dc.contributor.authorJafelicci, M. [UNESP]
dc.contributor.authorGoya, G. F.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-27T11:20:19Z
dc.date.available2014-05-27T11:20:19Z
dc.date.issued2001-12-01
dc.description.abstractSpindle-type iron fine particles have been prepared by reduction of silica-coated-hematite particles. Hydrogen reduction of the coated-hematite cores yielded uniform spindle-type iron particles, which were stabilized by surface oxidation. Narrow particle distributions are observed from TEM measurements. X-ray, Mössbauer and magnetization data are in agreement with the presence of nanosized α-Fe particles, having surface layer of spinel structure oxide. Mössbauer spectra show that the oxide surface is superparamagnetic at room temperature. © 2001 Elsevier Science B.V. All rights reserved.en
dc.description.affiliationDepto de Físico-Química Instituto de Química UNESP, Rua Prof. Francisco Degni, s/n, Araraquara, 14801-970 SP
dc.description.affiliationInstituto de Física Universidade de São Paulo, CP 66318, São Paulo 05315-970 SP
dc.description.affiliationUnespDepto de Físico-Química Instituto de Química UNESP, Rua Prof. Francisco Degni, s/n, Araraquara, 14801-970 SP
dc.format.extent1933-1935
dc.identifierhttp://dx.doi.org/10.1016/S0304-8853(00)00668-5
dc.identifier.citationJournal of Magnetism and Magnetic Materials, v. 226-230, n. PART II, p. 1933-1935, 2001.
dc.identifier.doi10.1016/S0304-8853(00)00668-5
dc.identifier.issn0304-8853
dc.identifier.scopus2-s2.0-33748695284
dc.identifier.urihttp://hdl.handle.net/11449/66625
dc.identifier.wosWOS:000170628400311
dc.language.isoeng
dc.relation.ispartofJournal of Magnetism and Magnetic Materials
dc.relation.ispartofjcr3.046
dc.relation.ispartofsjr0,786
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectFine particles
dc.subjectIron particles
dc.subjectMagnetic pigments
dc.subjectMagnetic recording media
dc.subjectHematite particles
dc.subjectHydrogen reduction
dc.subjectIron-fines
dc.subjectMagnetization data
dc.subjectMossbauer
dc.subjectNano-sized
dc.subjectOxide surface
dc.subjectParticle distributions
dc.subjectRoom temperature
dc.subjectSilica-Coated
dc.subjectSpinel structure
dc.subjectSuperparamagnetics
dc.subjectSurface layers
dc.subjectSurface oxidations
dc.subjectTEM
dc.subjectHematite
dc.subjectIron ores
dc.subjectMagnetic devices
dc.subjectMagnetic properties
dc.subjectMagnetic recording
dc.subjectMagnetism
dc.subjectMolybdenum oxide
dc.subjectReaction kinetics
dc.subjectSilica
dc.subjectSuperparamagnetism
dc.subjectSurface structure
dc.subjectMagnetic bubbles
dc.titleMagnetic properties of spindle-type iron fine particles obtained from hematiteen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentFísico-Química - IQARpt

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