title: Synthesis and thermoluminescence properties of rare earth-doped NaMgBO3 phosphor.
abstract: Rare earth (Dy(3+) and Sm(3+))-doped sodium magnesium borate (NaMgBO3) is synthesized by solution combustion synthesis method keeping their thermoluminescence properties in mind. The reaction produced very stable crystalline NaMgBO3:RE (RE = Dy(3+), Sm(3+)) phosphors. The phosphors are exposed to (60)Co gamma-ray radiations dose of varying rate from 5 to 25 Gy, and their TL characteristics with kinetic parameters are studied. NaMgBO3:Dy(3+) phosphor shows two peaks for lower doping concentration of Dy(3+) while it reduced to single peak for the higher concentrations of activator Dy(3+). NaMgBO3:Dy(3+) shows the major glow peak around 200 °C while NaMgBO3:Sm(3+) phosphors show two well-separated glow peaks at 200 and 332 °C respectively. The thermoluminescence intensity of these phosphors was compare with the commercially available TLD-100 (Harshaw) phosphor. The TL responses for gamma-ray radiations dose were found to be linear from 5 to 25 Gy for both phosphors while the fading in each case is calculated for the tenure of 45 days.
authors.affiliation: Department of Physics, BS Patel College, Pimpalgaon kale, 443403, India. zakirskhan@gmail.com.
authors.forename: Z S
authors.initials: ZS
authors.lastname: Khan
authors.affiliation: Prof. Ram Meghe Institute of Technology and Research, Badnera, Amravati, 444701, India.
authors.forename: N B
authors.initials: NB
authors.lastname: Ingale
authors.affiliation: Department of Physics, SGB Amravati University, Amravati, 444602, India.
authors.forename: S K
authors.initials: SK
authors.lastname: Omanwar
mesh_terms: D001881:Borates / Q000737:chemistry*; D005720:Gamma Rays; D008163:Luminescent Measurements / Q000379:methods; D017616:Magnesium Compounds / Q000737:chemistry*; D008674:Metals, Rare Earth; D012964:Sodium / Q000737:chemistry*
chemical_list: D001881:Borates; D017616:Magnesium Compounds; D008674:Metals, Rare Earth; C034034:magnesium borate; D012964:Sodium
keywords: Kinetic parameters; NaMgBO3; Rare earths; Solution combustion synthesis method; Thermoluminescence