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Title: Effect of CaF{sub 2} addition on optical properties of barium phosphate glasses

Ternary barium phosphate glasses, (50−X)BaO−XCaF{sub 2}−50P{sub 2}O{sub 5} have been prepared by adding 0-10 mol% of CaF{sub 2} to binary barium phosphate glasses. The amorphous nature of the prepared glasses was confirmed by X-ray diffraction technique. The UV-Visible absorption spectra have been recorded, optical band gap energy Eopt and Urbach energy Etail were determined. Shift in Eopt and Etail with increase in concentration of CaF{sub 2} is noted. FTIR analysis was carried out to investigate the short and intermediate-range orders in glasses. Shift of (P-O-P) band to higher wave number with the substitution of BaO with CaF{sub 2} shows the shortening of the phosphate chains. Hardness and density of glass samples were measured and correlated with the composition of glasses.
Authors:
; ; ;  [1]
  1. Department of Physics, National Institute of Technology Karnataka, Surathkal, Srinivasnagar -575025, Karnataka (India)
Publication Date:
OSTI Identifier:
22271021
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTRA; BARIUM OXIDES; BARIUM PHOSPHATES; CALCIUM FLUORIDES; CONCENTRATION RATIO; DENSITY; FOURIER TRANSFORMATION; HARDNESS; INFRARED SPECTRA; OPTICAL PROPERTIES; PHOSPHATE GLASS; ULTRAVIOLET SPECTRA; VISIBLE SPECTRA; X-RAY DIFFRACTION