A new double perovskite host material La2MgTiO6 in luminescence dosimetry

ALTUNAL V., Guckan V., Ozdemir A., Yigit O., Kurt K., Yegingil Z.

Journal of Alloys and Compounds, cilt.1044, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 1044
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1016/j.jallcom.2025.184469
  • Dergi Adı: Journal of Alloys and Compounds
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Public Affairs Index, Civil Engineering Abstracts
  • Anahtar Kelimeler: Double perovskite, La2MgTiO6 (LMT), Optically stimulated luminescence, Radiation dosimetry, Solid-state reaction, Thermoluminescence
  • Çukurova Üniversitesi Adresli: Evet

Özet

A new double perovskite fluorescent material La2MgTiO6 (LMT) was synthesized through a conformal solid state procedure. Its structure and morphology were characterized by the powder X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM)/Energy-Dispersive x-ray spectrometry (EDS) analyses. The optoelectronic properties were evaluated using thermoluminescence (TL), radioluminescence (RL) and photoluminescence (PL) emission spectra. The material was found to form the PL centers giving emission with maximum around 452, 532 and 590 nm. The appearing RL peaks positioned around 450 and 650 nm in the spectrum. Its dosimetric properties were reported for the first time. After irradiation with a beta dose of 10 Gy, the peaks around 100 and 240 °C were recognized in the TL glow curve of LMT ceramic recorded with 3 °C/s. The blue light stimulated OSL decay curve was decomposed into fast, medium and slow exponential components with lifetimes of 0.32, 1.83 and 24.76 s, respectively. The linear dose response behavior of LMT ceramic between 5 and 1000 Gy was investigated. Moreover, LMT as a host material exhibits good dosimetric properties. This new host material has potential applications in TL and OSL dosimetry systems after use of donor-acceptor (D-A) ions in the design of the host material that induces new luminescent characteristics endowing La2MgTiO6 with new, potentially usable functionalities.