Rabia, M. K.Mayoufi, M.Grosvalet, L.Champagnon, B.2020-10-192020-10-192012-01-01Articale in Journal of fundamental and Applied Sciences Vol. 04 N. 011112-9867http://dspace.univ-eloued.dz/handle/123456789/7147Articale in Journal of fundamental and Applied Sciences Vol. 04 N. 01Sodium tetraborate (100 – x)(Na2B4O7.10H2O)¬¬ ¬¬¬¬¬– xV2O5, (x = 0 to 20 mole %) has been elaborated by splat cooling technique. Raman Measurements on the doped and non polish samples reveal the presence of the of α-NaVO3 crystal on the superficial layer. After polishing, Raman spectra characteristic of glasses are obtained with two main bands located at 555 and 1097 cm-1 in the undoped glass and four bands at 241, 381, 776 and 938 cm-1 for the vanadium oxyde doped glasses. The volume devitrification of these glasses occurs at 750° C and the β-NaVO3 crystalline phase is identified by Raman scattering.frOxide glasses, Non-linear optics, Raman scattering, XRD, DSC.Study Of Polymorphism Of Borovanadate Glass Of Sodium By Raman Spectroscopy Low FrequenciesArticle