title: Luminescence characterization of Dy and Eu doped Na6Mg(SO4)4phosphors.
abstract: A series of single-phase phosphors based on Na6Mg(SO4)4(Zeff= 11.70) doped with Dy and Eu was prepared by the wet chemical method. The photoluminescence (PL) and thermoluminescence (TL) properties of Dy3+- and Eu3+-activated Na6Mg(SO4)4phosphors were investigated. The characteristic emissions of Dy3+and Eu3+were observed in the Na6Mg(SO4)4host. The TL glow curve of the Na6Mg(SO4)4:Dy phosphor consisted of a prominent peak at 234°C and a very small hump at 158°C. The TL sensitivity of the Na6Mg(SO4)4:Dy phosphor was found to be four times less than the commercialized CaSO4:Dy phosphor. The TL dose-response of the Na6Mg(SO4)4:Dy phosphor was studied from a dose range of 5-10 kGy and the linear dose-response was observed up to 1 kGy which is good for a microcrystalline phosphor. Trapping parameters for both the samples were calculated using the Initial Rise and Chen's peak shape methods.
authors.affiliation: Department of Physics, RTM Nagpur University, Nagpur, India.|Department of Physics, University of the Free State, Bloemfontein, The Free State, South Africa.
authors.forename: Bhushan P
authors.initials: BP
authors.lastname: Kore
authors.affiliation: Department of Physics, RTM Nagpur University, Nagpur, India.
authors.forename: Shilpa A
authors.initials: SA
authors.lastname: Pardhi
authors.affiliation: Department of Chemistry, Sevadal Mahila Mahavidyalaya, Nagpur, India.
authors.forename: N S
authors.initials: NS
authors.lastname: Dhoble
authors.affiliation: Department of Physics, RTM Nagpur University, Nagpur, India.
authors.forename: S J
authors.initials: SJ
authors.lastname: Dhoble
authors.affiliation: Department of Physics, University of the Free State, Bloemfontein, The Free State, South Africa.
authors.forename: H C
authors.initials: HC
authors.lastname: Swart
mesh_terms: D003460:Crystallization; D004419:Dysprosium / Q000737:chemistry*; D005063:Europium / Q000737:chemistry*; D049449:Luminescence; D049408:Luminescent Agents / Q000737:chemistry*; D008278:Magnesium Sulfate / Q000737:chemistry; D013696:Temperature; D014961:X-Ray Diffraction
chemical_list: D049408:Luminescent Agents; D004419:Dysprosium; D005063:Europium; D008278:Magnesium Sulfate
keywords: phosphor; thermoluminescence; trapping parameters; wet chemical method