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Your search keyword '"Lukić, Svetlana R."' showing total 2 results
Start Over Author "Lukić, Svetlana R." Topic optical properties
2 results on '"Lukić, Svetlana R."'

1. Gel combustion synthesis of transition metal ions doped Zn2SiO4 powder

Author

Lukić, Svetlana R., Petrović, Dragoslav M., Dacanin, L. J., Marinović-Cincović, Milena, Antić, Željka, Krsmanović, Radenka, and Dramićanin, Miroslav

Subjects
Optical properties, Experimental methods, Ultraviolet spectroscopy, Zn(2)SiO(4)power, Gel combustion synthesis, Materials
Abstract

We present here the synthesis procedure for obtaining Zn2SiO4:M2+ (M = Mn, Ni, Co) powder based on the combination of so-gel and combustion methods. Combustion is performed both in a conventional furnace and in a microwave oven in order to evaluate the influence of combustion conditions on the properties of synthesized material. X-ray diffraction analysis confirmed that obtained material has crystallized in rhombohedral structure of Zn2SiO4 (willemite) with traces of ZnO. The effects of combustion conditions are investigated further by means of thermogravimetric analysis, differential thermal analysis, infrared spectroscopy, diffuse reflectance optical spectroscopy and photoluminescence spectroscopy. Based on these results we could conclude that microwave combustion synthesis can be successfully applied for Zn2SiO4-based products.

Published
2008

2. Refractive-index dispersion of glassy semiconductors in the pseudo-binary As2Se3–SbSI system

Author

Skuban, Fedor, Lukić, Svetlana R., Petrović, Dragoslav M., and Gúth, Imre O.

Subjects
*OPTICAL properties of amorphous semiconductors, *REFRACTIVE index, *DISPERSION (Chemistry), *OPTICAL glass, *CHALCOGENIDES, *BULK solids, *CHEMICAL systems, *ARSENIC compounds, *BAND gaps
Abstract

Abstract: The bulk chalcogenide glasses in the pseudo-binary system (As2Se3)100− x (SbSI) x (with x =20, 30, 50, 70 and 80at.%) were prepared from high-purity elemental components by melt-quenching technique. It is a system with the variable ratio of classical amorphous compound As2Se3 and the molecule of antimony-sulphoiodide, SbSI, which in the monocrystal form is characterized as a ferroelectric. The refractive-index behaviour (magnitude and spectral dispersion) of investigated glasses was determined by the prism method and analyzed. To calculate and discuss the parameters of dispersion in the band gap region three different approaches were used (Cauchy, Sellmeier and Wemple–DiDomenico single-oscillator model). The comparison of the results shows good agreement between all applied models. It was found that the value of the refractive-index shows normal dispersion behaviour and increases with the increase of Sb (or SbSI) content in the investigated system, whereas the optical gap of these glasses Eg slightly decreases. [Copyright &y& Elsevier]

Published
2009
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