SANTOS, SILAS C. dosRODRIGUES JUNIOR, ORLANDOCAMPOS, LETICIA L.2020-02-282020-02-282019SANTOS, SILAS C. dos; RODRIGUES JUNIOR, ORLANDO; CAMPOS, LETICIA L. Formation and EPR response of europium-yttria micro rods. <b>QUARKS: Brazilian Electronic Journal of Physics, Chemistry and Material Science</b>, v. 1, n. 1, p. 53-56, 2019. DOI: <a href="https://dx.doi.org/10.34019/2674-9688.2019.v1.28229">10.34019/2674-9688.2019.v1.28229</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/30835.2674-9688http://repositorio.ipen.br/handle/123456789/30835Designing 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.53-56openAccessyttriumeuropiumdosimetryelectron spin resonancerare earthsdesignmaterials testingmicrostructurehydrothermal synthesisArtigo de periódico1110.34019/2674-9688.2019.v1.282290000-0001-7137-0613https://orcid.org/0000-0001-7137-0613https://orcid.org/0000-0002-6704-1910Sem PercentilSem Percentil CiteScore