RE-doped Fe3O4 (RE = Eu, Gd, Er) nanoparticles for nanothermometry

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dc.contributor.authorCORREA, E.pt_BR
dc.contributor.authorBOSCH-SANTOS, B.pt_BR
dc.contributor.authorSALES, T.pt_BR
dc.contributor.authorCABRERA-PASCA, G.pt_BR
dc.contributor.authorCORREA, B.S.pt_BR
dc.contributor.authorNETO, O.F.pt_BR
dc.contributor.authorCARBONARI, A.W.pt_BR
dc.contributor.authorOLESHKO, V.pt_BR
dc.contributor.authorDENNIS, C.pt_BR
dc.coverageInternacionalpt_BR
dc.creator.eventoANNUAL CONFERENCE ON MAGNETISM AND MAGNETIC MATERIALS, 64thpt_BR
dc.date.accessioned2020-10-26T15:29:47Z
dc.date.available2020-10-26T15:29:47Z
dc.date.eventoNovember 4-8, 2019pt_BR
dc.description.abstractTemperature affects every physical system, chemical reaction, and biological process. A new method, magnetic nanothermometry, is being explored to measure temperature throughout a volume. This method uses large changes in magnetization as function of temperature, which cannot be obtained with current magnetic nano-objects (MNO). To get a large magnetization change we have examined the magnetic properties of RE-doped Fe3O4 (RE = Eu, Gd, Er) MNO. Samples were synthesized by co-precipitation. For the doped material, RE+3 were chosen in order to replace the Fe+3 in the (Fe+2)(Fe+3)2O4 structure. Structural characterization was performed by X-ray diffraction and transmission electron microscopy. Hyperfine interaction parameters as a function of temperature (300 K to 873 K) were obtained by perturbed angular g-g correlation (PAC) spectroscopy using 111In(111Cd) as probe nuclei. To fit the PAC spectra, the 111Cd probes were considered to occupy three sites: tetrahedral, octahedral, and a third site where the probes are located at the nanoparticle surface [1]. The hyperfine magnetic field Bhf was calculated using the Larmor equation, and its behavior as a function of temperature follows a Brillouin-type transition. For example, the Curie temperature (TC) obtained for 5% Er-doped was approx. 846 K (FIG. 1), which is higher than the expected TC for pure Fe3O4 (approx. 722 K) [2]. Magnetization as a function of temperature shows a 70 % change in magnetization around 100 K for Er-doped Fe3O4 (FIG.2), which is an improvement in temperature on pure Fe3O4 (below 50 K) [3]. Current work is focused on correlating the temperature range in which the magnetization change occurs and determining if it depends on the dopant element.pt_BR
dc.event.siglaMMMpt_BR
dc.format.extent90-90pt_BR
dc.identifier.citationCORREA, E.; BOSCH-SANTOS, B.; SALES, T.; CABRERA-PASCA, G.; CORREA, B.S.; NETO, O.F.; CARBONARI, A.W.; OLESHKO, V.; DENNIS, C. RE-doped Fe3O4 (RE = Eu, Gd, Er) nanoparticles for nanothermometry. In: ANNUAL CONFERENCE ON MAGNETISM AND MAGNETIC MATERIALS, 64th, November 4-8, 2019, Las Vegas, Nevada, USA. <b>Abstract...</b> p. 90-90. Disponível em: http://repositorio.ipen.br/handle/123456789/31536.
dc.identifier.orcid0000-0002-4499-5949pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4499-5949
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/31536
dc.local.eventoLas Vegas, Nevada, USApt_BR
dc.rightsopenAccesspt_BR
dc.titleRE-doped Fe3O4 (RE = Eu, Gd, Er) nanoparticles for nanothermometrypt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorBRUNO SANTOS CORREA
ipen.autorARTUR WILSON CARBONARI
ipen.autorOSMAR FLAVIO DA SILVEIRA LEITE NETO
ipen.autorTATIANE DA SILVA NASCIMENTO
ipen.autorBRIANNA BOSCH DOS SANTOS
ipen.autorEDUARDO DE LIMA CORREA
ipen.codigoautor15164
ipen.codigoautor1437
ipen.codigoautor12755
ipen.codigoautor9322
ipen.codigoautor7480
ipen.codigoautor7498
ipen.contributor.ipenauthorBRUNO SANTOS CORREA
ipen.contributor.ipenauthorARTUR WILSON CARBONARI
ipen.contributor.ipenauthorOSMAR FLAVIO DA SILVEIRA LEITE NETO
ipen.contributor.ipenauthorTATIANE DA SILVA NASCIMENTO
ipen.contributor.ipenauthorBRIANNA BOSCH DOS SANTOS
ipen.contributor.ipenauthorEDUARDO DE LIMA CORREA
ipen.date.recebimento20-10
ipen.event.datapadronizada2019pt_BR
ipen.identifier.ipendoc27308pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
relation.isAuthorOfPublication0cfcf140-1709-41ab-ab72-877c86f94225
relation.isAuthorOfPublication8f236231-e73c-4182-a596-d83e49cd0404
relation.isAuthorOfPublication17041f02-6324-4380-9b22-4f71771d7c27
relation.isAuthorOfPublication24b79047-b1bf-4409-a205-0d39870c9cfd
relation.isAuthorOfPublication8eb536a6-8b2a-449c-aebf-392b54cd208f
relation.isAuthorOfPublication1f00087b-0c1b-413b-8464-2842b24a7328
relation.isAuthorOfPublication.latestForDiscovery1f00087b-0c1b-413b-8464-2842b24a7328
sigepi.autor.atividadeCARBONARI, A.W.:1437:310:Npt_BR
sigepi.autor.atividadeNETO, O.F.:12755:310:Npt_BR
sigepi.autor.atividadeSALES, T.:9322:310:Npt_BR
sigepi.autor.atividadeBOSCH-SANTOS, B.:7480:310:Npt_BR
sigepi.autor.atividadeCORREA, E.:7498:310:Spt_BR
sigepi.autor.atividadeCORREA, B.S.:15164:310:N
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