Thermoluminescence studies of solid-state reaction derived and γ-irradiated SrGd 2 O 4 : Eu 3+ phosphor

Abstract Eu 3+ activated SrGd 2 O 4 phosphors were synthesized by conventional high-temperature solid-state reaction method in air ambiance. The structural and thermoluminescence (TL) aspects of as-prepared phosphors were explored by XRD, FESEM, TEM and TL techniques. Orthorhombic phase formation and agglomerated ginger-like morphology of as-synthesized SrGd 2 O 4 : Eu 3+ samples were unfolded by X-ray diffraction (XRD) and microscopic studies, respectively. The effect of impurity (Eu 3+ ) contents and heating rates for the TL glow curves was also studied. The TL glow curve of γ-irradiated SrGd 2 O 4 : Eu 3+ shows two well-resolved peaks at 393 K and 598 K with a shoulder at 537 K. The Linear behaviour of as-formed SrGd 2 O 4 : Eu 3+ samples are observed in the dose range 500 Gy–3 kGy. The different trapping parameters were calculated by employing computerized glow curve deconvolution (CGCD) methods Linear dose response, less fading and high reproducibility of SrGd 2 O 4 : Eu 3+ samples broadly indicated its suitability for TL dosimetry applications.