title: Swift heavy ion induced structural and luminescence characterization of Y₂O₃:Eu³⁺ phosphor: a comparative study.
abstract: We report a comparative study on structural and thermoluminescence modifications of Y2O3:Eu(3+) phosphor induced by 150 MeV Ni(7+), 120 MeV Ag(9+) and 110 MeV Au(8+) swift heavy ions (SHI) in the fluence range 1 × 10(11) to 1 × 10(13) ions/cm(2). X-Ray diffraction and transition electron microscopy studies confirm the loss of crystallinity of the phosphors after ion irradiation, which is greater in the case of Au ion irradiation. Structural refinement using the Rietveld method yields the various structural parameters of ion-irradiated phosphors. Thermoluminescence glow curves of ion-irradiated phosphors show a small shift in the position of the peaks, along with an increase in intensity with ion fluence. Stopping range of ions in Matter (SRIM) calculations were performed to correlate the change in thermoluminescence properties of various ion-irradiated phosphors. It shows that the defects created by 110 MeV Au(8+) ions are greater in number. Trapping parameters of ion-irradiated phosphors were calculated from thermoluminescence data using various glow curve analysis methods.
authors.affiliation: Department of Applied Physics, Indian School of Mines, Dhanbad, 826 004, India.
authors.forename: S
authors.initials: S
authors.lastname: Som
authors.forename: S K
authors.initials: SK
authors.lastname: Sharma
authors.forename: S P
authors.initials: SP
authors.lastname: Lochab
mesh_terms: D005063:Europium / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D020450:Heavy Ions; D049449:Luminescence; D008163:Luminescent Measurements; D009532:Nickel / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D014961:X-Ray Diffraction; D015019:Yttrium / Q000737:chemistry*
chemical_list: D012834:Silver; D005063:Europium; D015019:Yttrium; D006046:Gold; D009532:Nickel; C091417:yttria
keywords: Rietveld refinement; phosphor; swift heavy ion; trapping parameter