| Title: |
EPR, optical and thermometric studies of Cr3+ ions in the α-Al2O3 synthetic single crystal |
| Authors: |
Mironova-Ulmane, Nina; Brik, Mikhail G.; Grube, Jurgis; Krieke, Guna; Kemere, Meldra; Antuzevics, Andris; Gabrusenoks, E.; Skvortsova, Vera N.; Elsts, Edgars; Sarakovskis, Anatolijs; Piasecki, Michal; Popov, Anatoli I. |
| Source: |
Optical Materials |
| Publication Year: |
2022 |
| Collection: |
VinaR Repository (Vinča Institute of Nuclear Sciences / University of Belgrade) |
| Subject Terms: |
Luminescence intensity ratio; McCumber-sturge theory; Optical thermometry |
| Description: |
The optical spectra of a single crystal of α-Al2O3Cr3+ were studied in a wide temperature range. The crystal was demonstrated to have a potential for optical thermometric applications. Three ways of measuring temperature were tested and analyzed: i) luminescence intensity ratio of the R1 and R2 lines; ii) change of the full width of half maxima of the R1 and R2 lines, and iii) thermal shifts of the R1 and R2 lines maxima. The highest absolute and relative sensitivities were obtained at cryogenic temperatures. In addition, the thermal shifts of the R lines were analyzed using the McCumber-Sturge equation to estimate the Debye temperature and the electron-vibrational interaction parameter. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
Euratom Research and Training Programme [Grant Agreement No 101052200 − EUROfusion]; Foreign Experts [Grant No. W2017011]; Telecommunications and the National Foreign Experts Program for “Belt and Road Initiative” Innovative Talent Exchange [Grant No. DL2021035001L]; Estonian Research Council [Grant PUT PRG111]; European Regional Development Fund [TK141]; NCN [project 2018/ 31/B/ST4/00924]; European Union Horizon 2020 [No. 739508, project CAMART2]; https://vinar.vin.bg.ac.rs/handle/123456789/10397; 000879531900004 |
| DOI: |
10.1016/j.optmat.2022.112859 |
| Availability: |
https://vinar.vin.bg.ac.rs/handle/123456789/10397; https://doi.org/10.1016/j.optmat.2022.112859 |
| Rights: |
restrictedAccess ; ARR |
| Accession Number: |
edsbas.417C9A6B |
| Database: |
BASE |