| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7907734 | Optical Materials | 2018 | 6 Pages |
Abstract
The oxide MgGa2O4 spinel ceramics doped with Mn2+ ions was synthesized by a solid-state reaction at 1200â¯Â°C in air. The activator concentration was equal 0.05â¯mol% of MnO. Phase purity of the synthesized samples was analyzed by X-ray diffraction technique. This spinel ceramics show efficient green emission in the range from 470 to 550â¯nm with a maximum at about 505â¯nm under UV or X-ray excitations, which is due to Mn2+ ions. MgGa2O4: Mn2+ exhibits intense thermoluminescence (TL) and optically stimulated luminescence (OSL) after influence of ionizing radiation. Are complex nature of the TL glow curves is associated with a significant number of structural defects that are responsible for the formation of shallow and deep electron traps. In this work, time-resolved OSL characteristics of the samples exposed to beta particles are reported for the first time. A light from green LED was used for optical stimulation. Obtained TL and OSL results suggest MgGa2O4:Mn2+ as perspective material for further research and possible application in radiation dosimetry.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
A. Luchechko, Ya Zhydachevskyy, D. Maraba, E. Bulur, S. Ubizskii, O. Kravets,