| dc.contributor.author | Babin, V. | |
| dc.contributor.author | Boháček, Pavel | |
| dc.contributor.author | Grigorjeva, Larisa | |
| dc.contributor.author | Kucera, Miroslav | |
| dc.contributor.author | Nikl, M. | |
| dc.contributor.author | Zazubovich, S. | |
| dc.contributor.author | Zolotarjovs, Aleksejs | |
| dc.date.accessioned | 2020-10-02T10:29:03Z | |
| dc.date.available | 2020-10-02T10:29:03Z | |
| dc.date.issued | 2017 | |
| dc.identifier.issn | 0925-3467 | |
| dc.identifier.uri | https://dspace.lu.lv/dspace/handle/7/52594 | |
| dc.description | The work was supported by the Institutional Research Funding IUT02-26 of the Estonian Ministry of Education and Research and the project 16-15569S of the Czech Science Foundation. | en_US |
| dc.description.abstract | Photo- and radioluminescence and thermally stimulated luminescence characteristics of Ce³⁺ - doped and Ce³⁺, Mg²⁺ co-doped Gd3(Ga,Al)5O12 (GAGG) single crystals of similar composition are investigated in the 9–500 K temperature range. The Ce³⁺ - related luminescence spectra and the photoluminescence decay kinetics in these crystals are found to be similar. Under photoexcitation in the Ce³⁺ - and Gd³⁺ - related absorption bands, no prominent rise of the photoluminescence intensity in time is observed neither in GAGG:Ce,Mg nor in GAGG:Ce crystals. The afterglow is strongly reduced in GAGG:Ce,Mg as compared to GAGG:Ce, and the afterglow decay kinetics is much faster. Co-doping with Mg²⁺ results in a drastic decrease of the thermally stimulated luminescence (TSL) intensity in the whole investigated temperature range and in the appearance of a new complex Mg²⁺ - related TSL glow curve peak around 285 K. After irradiation in the Ce³⁺ - related 3.6 eV absorption band, the TSL intensity in GAGG:Ce,Mg is found to be comparable with that in the GAGG:Ce epitaxial film of similar composition. The Mg²⁺ - induced changes in the concentration, origin and structure of the crystal lattice defects and their influence on the scintillation characteristics of GAGG:Ce,Mg are discussed. | en_US |
| dc.description.sponsorship | Estonian Ministry of Education and Research IUT02-26; Czech Science Foundation 16-15569S; Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART² | en_US |
| dc.language.iso | eng | en_US |
| dc.publisher | Elsevier B.V. | en_US |
| dc.relation | info:eu-repo/grantAgreement/EC/H2020/739508/EU/Centre of Advanced Material Research and Technology Transfer/CAMART² | en_US |
| dc.relation.ispartofseries | Optical Materials;66 | |
| dc.rights | info:eu-repo/semantics/openAccess | en_US |
| dc.subject | Research Subject Categories::NATURAL SCIENCES:Physics | en_US |
| dc.subject | Luminescence | en_US |
| dc.subject | Multicomponent garnets | en_US |
| dc.subject | Single crystals | en_US |
| dc.subject | Ce3+ | en_US |
| dc.subject | Mg2+ | en_US |
| dc.subject | Scintillators | en_US |
| dc.title | Effect of Mg2+ ions co-doping on luminescence and defects formation processes in Gd3(Ga,Al)5O12:Ce single crystals | en_US |
| dc.type | info:eu-repo/semantics/article | en_US |
| dc.identifier.doi | 10.1016/j.optmat.2017.01.039 | |
