Synthesis, characterization and luminescent properties of Mg- A nd Cr-doped alumina ceramics
- Frolov, E. I.
- Zvonarev, S. V.
- Moschensky, Y. V.
- Chesnokov, K. Y.
- Chukin, A. V.
- Abramov, A. V.
- Churkin, V. Y.
- Moiseykin, E. V.
- Obvintseva, N. V.
DOIAbstract
Alumina ceramic doped with Mg and Cr is produced at high-temperature sintering under vacuum at varying annealing temperature and dopant concentration. A differential thermal analysis, X-ray fluorescence, and X-ray diffraction methods are used for sample characterization. The effect of the characteristics described above on the formation of different defects and luminescence centers in the samples was studied with a thermoluminescence method. An increase in the dopant concentration leads to an increase in the pulsed cathodoluminescence intensity of the dopant center in Mg-doped alumina ceramics and a decrease in Cr-doped alumina ceramics. The thermoluminescence intensity for Al2O3:Mg ceramics increases with magnesium concentration growth. Th...
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