Formation and EPR response of europium-yttria micro rods
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2019
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QUARKS: Brazilian Electronic Journal of Physics, Chemistry and Material Science
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Resumo
Designing new materials with suitable dose-response efficiency is a great challenge in
radiation dosimetry search. Yttria (Y2O3) has excellent optical, mechanical, chemical, and
thermal properties. Besides, yttria exhibits crystal characteristics that provide insertion of
other rare earths, forming innovative materials. Nevertheless, there are quite few studies on
formation, microstructural and EPR response evaluation of yttria. This work reports the
formation and EPR characterization of europium-yttria micro rods for radiation dosimetry.
Ceramic rods obtained by sintering at 1600ºC/4h in air were exposed to gamma radiation
with doses from 1Gy to 150kGy. Particle, microstructural and dosimetry characterizations
were performed by PCS, XRD, SEM, OM, and EPR techniques. As sintered europiumyttrium
rods exhibited dense microstructure (90% theoretical density) and linear EPR dose
response behavior up to 10kGy. These results show that europium-yttria is a promising
material for radiation dosimetry.
Como referenciar
SANTOS, SILAS C. dos; RODRIGUES JUNIOR, ORLANDO; CAMPOS, LETICIA L. Formation and EPR response of europium-yttria micro rods. QUARKS: Brazilian Electronic Journal of Physics, Chemistry and Material Science, v. 1, n. 1, p. 53-56, 2019. DOI: 10.34019/2674-9688.2019.v1.28229. Disponível em: http://repositorio.ipen.br/handle/123456789/30835. Acesso em: 20 Mar 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.