Akademik Veri Yönetim Sistemi
Materials Research Bulletin, cilt.202, 2026 (SCI-Expanded, Scopus)
Undoped K₃Gd(BO₂)₆ powders were synthesized by microwave-assisted sol–gel combustion and confirmed as a single-phase borate by X-ray diffraction. The material is investigated as a potential thermoluminescent (TL) dosimeter for radiation detection. A 410 nm detection window produced intense, well-resolved glow peaks dominated by intrinsic defect- and Gd-related recombination. The TL glow curve exhibits a dominant dosimetric peak at ∼268 °C, preserved after preheating at 190 °C for 9 s. The material shows a stable and reproducible TL response over the ∼7–500 Gy dose range, with sublinear behavior and a minimum detectable dose of ∼0.2 Gy, indicating suitability for medium- to high-dose dosimetry. Kinetic analysis based on CGCD, supported by Tₘ–Tstop and initial rise methods, reveals a dominant trap depth of ∼2.2 eV. These findings demonstrate that undoped K₃Gd(BO₂)₆ is a promising dopant-free TL phosphor for radiation dosimetry applications.