Thermoluminescence study of Nd3+ doped lanthanum tri-borate phosphor

Oglakci M., AKÇA ÖZALP S., PORTAKAL UÇAR Z. G., Correcher V., Benavente J., Sonsuz M., ...Daha Fazla

Journal of Alloys and Compounds, cilt.1013, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 1013
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1016/j.jallcom.2025.178570
  • 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: Dosimetry, LaB3O6, Nd3+, Rare earth, Thermoluminescence
  • Çukurova Üniversitesi Adresli: Evet

Özet

This study investigates the thermoluminescence (TL) properties and trapping parameters of Nd3+ doped lanthanum tri-borate (LaB3O6) phosphors, synthesized through a low-temperature combustion method. The synthesized samples, doped with varying concentrations of Nd3+ (0.25 %, 0.5 %, 1 %, 2 %, 3 %, and 5 % by mass), were characterized using powder X-ray diffraction (XRD) to confirm their crystalline structure and matched LaB3O6 reference pattern in ICSD. The TL glow peaks of Nd3+ doped LaB3O6 subjected to 5 Gy beta radiation emerged notably at 75˚C, 125˚C and 257˚C, accompanied by shoulder above 320˚C. The optimal Nd3+ doping concentration for TL efficiency was 0.25 %. TL response of LaB3O6:Nd3+ (0.25 %) against doses ranging from 0.1 Gy to 750 Gy indicated excellent linear behavior up to 20 Gy (b=1.003, R2= 0.999). Ten cycles of reusability testing showed that the deviations did not exceed 2 % for either the maximum TL intensity (Im) or peak area variation. The TL signal faded by about 13 % in 26 days of storage time. Various heating rates (VHR), Tm-Tstop, initial rise (IR), and computerized glow curve deconvolution (CGCD) methods were employed to ascertain the individual peak numbers and kinetic parameters of LaB3O6:0.25 %Nd3+ sample. The CGCD result revealed that it is possible to distinguish five overlapped groups of components peaked at 249, 272, 303, 327 and 354 °C.