UPSI Digital Repository (UDRep)
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Abstract : Universiti Pendidikan Sultan Idris |
Glassesin the series 30MgSO4-(70-x) P2O5-xSm2O3 0.2 ≤x≤1.0 mol percentwere prepared by single step melt-quenchtechniques, thestructure, physicalandoptical propertiesofsamarium oxide at different concentrationswere studied.The amorphous phase of the samples was verifiedby X-ray diffraction spectroscopy, the structural units were investigated using Fourier Transform Infrared, Raman and NMR spectroscopy where the spectra revealthe presence of symmetric, asymmetric, torsoionalandbending vibration of phosphate groups,the NMR spectra reveals the changes in Qndistributionhere discussed,thecompositional dependenceonphysical (density, average molar weight,dielectric constant,Inter-nuclear distance, Field strength,Molar volume, Molar refractivity etc) and optical parameterswere determined. In terms of structural modifications, there is variation of density and molar volume, the glass sample hasincreasing refractive index values with decreasing molar volume content. The luminescence spectra were observed within UV-Vis-NIR region, the absorption spectra of the sample were recorded in the range of 350 to 1800 nm meanwhile, absorption edge the optical band-gap,and ?E wasevaluated. Our result may be advantageousfor many optical applications (e.g visible lasers or color displays).
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