Synthesis, processing, and electron paramagnetic resonance response of Y1.98Eu0.02O3 micro rods

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dc.contributor.authorSANTOS, S.C.
dc.contributor.authorRODRIGUES JUNIOR, O.
dc.contributor.authorCAMPOS, L.L.
dc.coverageInternacionalpt_BR
dc.date.accessioned2019-01-31T17:00:10Z
dc.date.available2019-01-31T17:00:10Z
dc.date.issued2018pt_BR
dc.description.abstractInnovating dosimetric materials, which includes design and development of new dosimetric materials based on rare earth oxides, is challenging. Yttrium oxide (Y2O3) is one of the most important sesquioxides and presents crystal characteristics that enable doping with rare earth ions, making it a promising material for radiation dosimetry. This paper reports on the development and measurement of Electron Paramagnetic Resonance (EPR) signal response for Y1.98Eu0.02O3 micro rods that have undergone facile low-pressure hydrothermal synthesis and bio-prototyping. Assynthesized powders with narrow sub-micrometer particle size distribution with d50 of 584 nm exhibited a reactive surface, which led to the formation of stable aqueous suspensions by controlling the surface charge density of particles through alkaline pH adjustment. Ceramic samples with dense microstructure were formed by sintering at 1600 ºC for 4h at ambient atmosphere. Y1.98Eu0.02O3 micro rods were irradiated using a 60Co source with doses from 1 to 100 kGy, and EPR spectra were measured at room temperature in X-band microwave frequencies. Sintered samples exhibited linearity of the main EPR signal response from 10 Gy to 10 kGy. Supralinearity was observed for higher doses, which is possibly ascribed to formation of more defects. Using europium as a dopant enhanced the EPR signal of yttrium rods remarkably, due to 4f–4f transitions of the Eu3+ ion. These innovative findings make europium-doped yttrium oxide a promising material for radiation dosimetry.pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipIDFAPESP: 14/23621-3pt_BR
dc.format.extent1860112-1 - 1860112-8pt_BR
dc.identifier.citationSANTOS, S.C.; RODRIGUES JUNIOR, O.; CAMPOS, L.L. Synthesis, processing, and electron paramagnetic resonance response of Y1.98Eu0.02O3 micro rods. <b>International Journal of Modern Physics: Conference Series</b>, v. 48, p. 1860112-1 - 1860112-8, 2018. DOI: <a href="https://dx.doi.org/10.1142/S2010194518601126">10.1142/S2010194518601126</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/29433.
dc.identifier.doi10.1142/S2010194518601126pt_BR
dc.identifier.issn2010-1945pt_BR
dc.identifier.orcidaguardandopt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7137-0613
dc.identifier.orcidhttps://orcid.org/0000-0002-6704-1910
dc.identifier.percentilfiSem Percentil
dc.identifier.percentilfiCiteScoreSem Percentil CiteScore
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/29433
dc.identifier.vol48pt_BR
dc.relation.ispartofInternational Journal of Modern Physics: Conference Seriespt_BR
dc.rightsclosedAccesspt_BR
dc.subjectsynthesis
dc.subjectrare earths
dc.subjectyttrium oxides
dc.subjectelectron spin resonance
dc.subjectmagnetic resonance
dc.subjectdosimetry
dc.subjectceramics
dc.subjecteuropium
dc.subjectdoped materials
dc.titleSynthesis, processing, and electron paramagnetic resonance response of Y1.98Eu0.02O3 micro rodspt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorLETICIA LUCENTE CAMPOS RODRIGUES
ipen.autorORLANDO RODRIGUES JUNIOR
ipen.autorSILAS CARDOSO DOS SANTOS
ipen.codigoautor1195
ipen.codigoautor322
ipen.codigoautor6961
ipen.contributor.ipenauthorLETICIA LUCENTE CAMPOS RODRIGUES
ipen.contributor.ipenauthorORLANDO RODRIGUES JUNIOR
ipen.contributor.ipenauthorSILAS CARDOSO DOS SANTOS
ipen.date.recebimento19-01pt_BR
ipen.identifier.fiSem F.I.pt_BR
ipen.identifier.fiCiteScoreSem CiteScore
ipen.identifier.ipendoc25214pt_BR
ipen.identifier.iwosaguardando WoSpt_BR
ipen.type.genreArtigo
relation.isAuthorOfPublicationd4d34119-a6e6-4026-9a67-7b16d8b668da
relation.isAuthorOfPublicationf72d59d1-f942-442a-b16e-8b0ba0e2b671
relation.isAuthorOfPublication6d1f35e3-57eb-471d-ae82-5f850a99e01b
relation.isAuthorOfPublication.latestForDiscovery6d1f35e3-57eb-471d-ae82-5f850a99e01b
sigepi.autor.atividadeSANTOS, S.C.:6961:330:Spt_BR
sigepi.autor.atividadeRODRIGUES JUNIOR, O.:322:330:Npt_BR
sigepi.autor.atividadeCAMPOS, L.L.:1195:330:Npt_BR
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