caa a22 4500 469040904 CHVBK 20180323132811.0 cr unu---uuuuu 170328e19921201xx s 000 0 eng 10.1007/BF02847279 doi (NATIONALLICENCE)springer-10.1007/BF02847279 Inelastic light scattering in strontium borate glasses in the system x SrO.(1− x )B2O3 and (SrCl2) y .[ x SrO.(1− y − x )B2O3]1− y [Elektronische Daten] [M Rahman, B Dwivedi, Y Kumar, B Khanna] Raman spectra of strontium borate binary glasses in the systemxSrO.(1-x)B2O3 forx=0.20, 0.25, 0.30, 0.35, 0.40, and 0.50 and ternary glasses in the system (SrCl2) y .[xSrO.(1−y−x)B2O3]1−y fory=0.10, 0.20, 0.30 and 0.40 andx=0.20 and 0.35, are reported. Raman spectra of the glasses show experimental evidence of glass network modifying nature of SrO in borate matrix. SrO causes a change of boron atom coordination number from 3 to 4 resulting in the complex structural groupings comprising of BO4 and BO3 units. Strontium cations are not easily accommodated in the glass structure and tend to break up the network at high concentration (x) of SrO, causing non-bridging oxygens. The effect of temperature variation of binary glasses has also been studied. The introduction of SrCl2 to the binary stronium borate glass causes a large change in intensity of low frequency Raman scattering whereas there is no change in the vibrational dynamics in the high frequency region. The temperature reduced Raman spectra represents true vibrational density of states. Martin-Brenig model developed for the low frequency region has been discussed to obtain the structural correlation range in the glass. the Indian Academy of Sciences, 1992 Raman spectra nationallicence borate glasses nationallicence glass structure nationallicence 61.40 nationallicence Rahman M. Department of Physics, Aligarh Muslim University, 202 002, Aligarh, India aut Dwivedi B. Department of Physics, Aligarh Muslim University, 202 002, Aligarh, India aut Kumar Y. Department of Physics, Aligarh Muslim University, 202 002, Aligarh, India aut Khanna B. Department of Physics, Aligarh Muslim University, 202 002, Aligarh, India aut Pramana Springer India 39/6(1992-12-01), 597-614 0304-4289 39:6<597 1992 39 12043 https://doi.org/10.1007/BF02847279 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02847279 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rahman M. Department of Physics, Aligarh Muslim University, 202 002, Aligarh, India aut NATIONALLICENCE 700 1- Dwivedi B. Department of Physics, Aligarh Muslim University, 202 002, Aligarh, India aut NATIONALLICENCE 700 1- Kumar Y. Department of Physics, Aligarh Muslim University, 202 002, Aligarh, India aut NATIONALLICENCE 700 1- Khanna B. Department of Physics, Aligarh Muslim University, 202 002, Aligarh, India aut NATIONALLICENCE 773 0- Pramana Springer India 39/6(1992-12-01), 597-614 0304-4289 39:6<597 1992 39 12043 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer