| Full text | |
| Author(s): |
Santos, S. C.
;
Rodrigues, O.
;
Campos, L. L.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | MATERIALIA; v. 30, p. 13-pg., 2023-06-20. |
| Abstract | |
In the radiation dosimetry field the research for new materials is a continuos demand with the aim to provide highly improvement procedures where ionizing radiation is used. Considering this challenge, the present work reports the colloidal synthesis of europium-thulium-co-doped yttria powders (YET) and evaluates the dopants effect on the promotion of EPR response of yttria. The powdered compositions prepared with up to 2at.%Tm and 2at.%Eu (at.%, atomic percentage) were evaluate by XRD, PCS, SEM, and EPR. Based on the results, the proposed synthesis method provided ceramic powders with cubic C-type form and mean particle size (d50) less than 160nm. The most significant EPR dose-response was noticed for the powdered composition prepared with 0.5at. %Tm (YET0.5) as irradiated with 5kGy (60Co). These findings are key parameters to advance toward the formation of new materials for radiation dosimetry. (AU) | |
| FAPESP's process: | 18/05982-0 - R&D&I in radiation metrology in the health area |
| Grantee: | Linda Viola Ehlin Caldas |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 22/06695-0 - Development of an EPR protocol for dosimetric characterization of co-doped rare-earth yttria based micro ceramics |
| Grantee: | Silas Cardoso dos Santos |
| Support Opportunities: | Scholarships in Brazil - Technical Training Program - Technical Training |