Growth of magnetite films by a hydrogel method

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dc.citation.journalTitleJOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
dc.contributor.authorVelásquez, A.A.
dc.contributor.authorMarín, C.C.
dc.contributor.authorUrquijo, J.P.
dc.contributor.departmentUniversidad EAFIT. Departamento de Ciencias Básicas
dc.contributor.researchgroupElectromagnetismo Aplicado (Gema)spa
dc.date.accessioned2021-03-23T21:39:33Z
dc.date.available2021-03-23T21:39:33Z
dc.date.issued2017-06-15
dc.description.abstractMagnetite (Fe3O4) films were grown on glass substrates by formation and condensation of complex of iron oxides in an agarose hydrogel. The obtained films were characterized by Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TGA), Scanning Electron Microscopy (SEM), Room Temperature Mössbauer Spectroscopy (TMS), Vibrating Sample Magnetometry (VSM), Atomic Force Microscopy (AFM) and Voltage vs. Current measurements by the four-point method. FTIR and TGA measurements showed that some polymer chains of agarose remain linked to the surface of the magnetic particles of the films after heat treatment. SEM measurements showed that the films are composed by quasi spherical particles with sizes around 55 nm. Mössbauer spectroscopy measurements showed two sextets with broaden lines, which were assigned to magnetite with a distributed particle size, and two doublets, which were assigned to superparamagnetic phases of magnetite. For the specific dimensions of the films prepared, measurements of Voltage vs. Current showed an ohmic behavior for currents between 0 and 200 nA, with a resistance of 355 kO. © 2017 Elsevier B.V.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=6546
dc.identifier.doi10.1016/j.jmmm.2017.01.098
dc.identifier.issn03048853spa
dc.identifier.issn18734766spa
dc.identifier.otherWOS;000399601600028
dc.identifier.otherSCOPUS;2-s2.0-85015692718
dc.identifier.urihttp://hdl.handle.net/10784/27173
dc.language.isoengeng
dc.publisherElsevier B.V.
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85015692718&doi=10.1016%2fj.jmmm.2017.01.098&partnerID=40&md5=8247f33e72b2d58bef225ef68a9ae25a
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/0304-8853
dc.sourceJOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
dc.subject.keywordAtomic force microscopyeng
dc.subject.keywordFunctional electric stimulationeng
dc.subject.keywordHydrogelseng
dc.subject.keywordIron compoundseng
dc.subject.keywordMagnetiteeng
dc.subject.keywordMagnetometerseng
dc.subject.keywordMagnetometryeng
dc.subject.keywordParticle sizeeng
dc.subject.keywordPolymer filmseng
dc.subject.keywordScanning electron microscopyeng
dc.subject.keywordSubstrateseng
dc.subject.keywordThermogravimetric analysiseng
dc.subject.keywordAfter-heat treatmenteng
dc.subject.keywordDistributed particleseng
dc.subject.keywordMagnetic particleeng
dc.subject.keywordMagnetite filmseng
dc.subject.keywordSpherical particleeng
dc.subject.keywordSsbauer spectroscopieseng
dc.subject.keywordSuperparamagneticseng
dc.subject.keywordVibrating sample magnetometryeng
dc.subject.keywordFourier transform infrared spectroscopyeng
dc.titleGrowth of magnetite films by a hydrogel methodeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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