The influence of 1,2-alkanediol on the crystallinity of magnetite nanoparticles

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dc.contributor.authorEFFENBERGER, F. B.
dc.contributor.authorCARBONARI, A. W.
dc.contributor.authorROSSI, L. M.
dc.date.accessioned2022-01-12T21:58:45Z
dc.date.available2022-01-12T21:58:45Z
dc.date.issued2016
dc.description.abstract© 2016 Elsevier B.V. All rights reserved.Magnetic nanoparticles of magnetite have been synthesized by thermal decomposition and investigated by measuring the magnetic hyperfine field. Preformed Fe3O4 nanoparticles were used as seeds to produce a series of magnetic nanoparticles, with different sizes and shapes. Samples were characterized by X-ray diffraction, transmission electron microscopy, and magnetization measurements. The perturbed angular correlation (PAC) technique was used to study the influence of 1,2-octanediol on the seeding growth of the Fe3O4 by measuring hyperfine interactions. The nuclear probes 111In → 111Cd were introduced into the samples through the synthesis of first core of Fe3O4, remained in the samples after the consecutive growth. The PAC results show the presence of two probe site fractions, one characterized by a well-defined magnetic dipole frequency with population fI and another characterized with a broad distributed electric quadrupole frequency with population fO, which were, respectively, assigned to probes at substitutional Fe sites in crystalline Fe3O4 formed at inner region of the nanoparticles and probes at non-crystalline iron oxide in the outer region of nanoparticles. A mathematical model was proposed to fit the behavior of fO with the particle size.
dc.description.firstpage49
dc.description.lastpage55
dc.description.volume417
dc.identifier.citationEFFENBERGER, F. B.; CARBONARI, A. W.;ROSSI, L. M. The influence of 1,2-alkanediol on the crystallinity of magnetite nanoparticles. Journal of Magnetism and Magnetic Materials, v. 417, p. 49-55, nov. 2016.
dc.identifier.doi10.1016/j.jmmm.2016.05.028
dc.identifier.issn0304-8853
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/3883
dc.relation.ispartofJournal of Magnetism and Magnetic Materials
dc.rightsAcesso Restrito
dc.subject.otherlanguageFe3O4
dc.subject.otherlanguageMagnetic hyperfine field
dc.subject.otherlanguageNanoparticles
dc.titleThe influence of 1,2-alkanediol on the crystallinity of magnetite nanoparticles
dc.typeArtigo
fei.scopus.citations6
fei.scopus.eid2-s2.0-84971508995
fei.scopus.subjectDifferent sizes
fei.scopus.subjectElectric quadrupoles
fei.scopus.subjectHyperfine interactions
fei.scopus.subjectMagnetic dipole
fei.scopus.subjectMagnetic hyperfine field
fei.scopus.subjectMagnetic nano-particles
fei.scopus.subjectMagnetization measurements
fei.scopus.subjectPerturbed angular correlation
fei.scopus.updated2024-07-01
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84971508995&origin=inward
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