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

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-27T11:20:19Z
dc.date.accessioned2022-10-05T17:44:31Z
dc.date.available2014-05-27T11:20:19Z
dc.date.available2022-10-05T17:44:31Z
dc.date.created2014-05-27T11:20:19Z
dc.date.issued2001-12-01
dc.identifierJournal of Magnetism and Magnetic Materials, v. 226-230, n. PART II, p. 1933-1935, 2001.
dc.identifier0304-8853
dc.identifierhttp://hdl.handle.net/11449/66625
dc.identifier10.1016/S0304-8853(00)00668-5
dc.identifierWOS:000170628400311
dc.identifier2-s2.0-33748695284
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3916363
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.
dc.languageeng
dc.relationJournal of Magnetism and Magnetic Materials
dc.relation3.046
dc.relation0,786
dc.rightsAcesso 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 hematite
dc.typeArtigo


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