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Title: Structural studies of lithium boro tellurite glasses doped with praseodymium and samarium oxides

Graphical abstract: [TeO{sub 4}] trigonal bipyramid structural unit, which is formed by two unequivalent pair of oxygen atoms: two equatorial oxygens (O{sub eq}) and two axial oxygens (O{sub ax}). Highlights: ► Pr{sup 3+} and Sm{sup 3+} doped LBT glasses have been prepared and characterized. ► LBT glasses present normal surfaces without metallic clusters. ► Raman spectra revealed the network modifying behaviour of dopant ions. -- Abstract: This paper reports the preparation and structural studies of praseodymium and samarium (0.5, 2 and 4 mol%) oxide doped lithium boro tellurite glasses. These materials were prepared by the quenching technique in a ceramic crucible at 950 °C. Structural characterization was performed by Raman spectroscopy, Scanning Electron Microscopy and Energy Dispersive X-ray spectroscopy techniques. Results from Raman analysis are in good agreement with those reported in the literature, revealing a normal glass structure for the host material. Understanding on how the glasses internal structure changed when the doping concentration increases was also assessed.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [4]
  1. Departamento de Física, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto (Portugal)
  2. INESC Porto, Rua do Campo Alegre, 687, 4169-007 Porto (Portugal)
  3. HORIBA Jobin Yvon IBH Ltd., Skypark 5, 45 Finnieston Street, Glasgow G3 8JU (United Kingdom)
  4. (Portugal)
Publication Date:
OSTI Identifier:
22215589
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 47; Journal Issue: 11; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DOPED MATERIALS; GLASS; LITHIUM; MICROSTRUCTURE; OXYGEN; PRASEODYMIUM; PRASEODYMIUM IONS; RAMAN SPECTRA; RAMAN SPECTROSCOPY; SAMARIUM; SAMARIUM IONS; SAMARIUM OXIDES; SCANNING ELECTRON MICROSCOPY; X-RAY SPECTROSCOPY