@article{scholars795,
         journal = {Journal of King Saud University - Science},
          volume = {21},
           pages = {93--97},
            note = {cited By 30},
       publisher = {Elsevier},
          number = {2},
           title = {Infrared and Raman studies on Snx-Sb5-Se95-x chalcogenide glasses},
            year = {2009},
             doi = {10.1016/j.jksus.2009.07.002},
             url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-72049104183&doi=10.1016\%2fj.jksus.2009.07.002&partnerID=40&md5=e7a7c064af0ce6b7a20f52bc7448758b},
          author = {Adam, A. B.},
            issn = {10183647},
        abstract = {Tin-antimony-selenium (Sn-Sb-Se)-based systems belong to the ternary chalcogenide compounds of IV-V-VI group. They have potential applications in infrared region due to their heavy elemental masses, continuous variation of band gap-energies and lattice constants as well as electrical properties, with compositions. Structures of melt quench-synthesized samples of Snx-Sb5-Se95-x system, where x = 0, 5, 10 and 12.5-mole have been studied using Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy. FTIR spectra illustrates that addition of Sn-mole to the system causes a shift in IR-peak's intensity and width from long to the short wavelength. This change implies the breaking of Se chains that appeared around 210-254 cm-1 and the occurrence of pyramidal SbSe3 around 147-210 cm-1 and asymmetrical tetrahedral SnSe4 mode around 117-145 cm-1 for Sn = 5 mole up to 180 cm-1 in Sn = 12.5 mole spectra. Raman spectra show that a pyramidal SbSe3 peak is cited at 190-cm-1. The intensity of this peak is shifted towards -183 cm-1 when Sn-mole is added to the system. The results confirm the validity of using 4, 3 and 2 as co-ordination numbers of Sn, Sb and Se, respectively, in the amorphous region, which is contained by the average co-ordination number, {\^I}1/4 {\^a}?? 2.4 and the fraction of Sn-Se bonds, fSn-Se \< 44.3. {\^A}{\copyright} 2009 King Saud University.}
}