Thermally induced ionization of 5d1 state of Ce3+ ion in Gd3Ga3Al2O12 host

- Energy transfer from Gd3+ to Ce3+ in Gd3Ga3Al2O12 host is evidenced.
- Thermal ionization and delayed recombination at 5d1 and 5d2 states of Ce3+ are compared.
- Specific defects are revealed in the Gd3Ga3Al2O12:Ce powders.