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AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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STUDIA PHYSICA - Ediţia nr.2 din 2006 | |||||||
Articol: |
LOCAL STRUCTURE OF 3B2O3-PBO-AG2O BASED GLASSES ANALYZED THROUGH RAMAN SPECTROSCOPY. Autori: I. ARDELEAN, R. CICEO-LUCACEL, A.O. HULPUS. |
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Rezumat: Glasses from xCuO(1-x)[3B2O3(1-y)PbOyAg2O] (0 x 0.1 and y = 0.1, 0.3) system were prepared and studied by means of Raman scattering. For both systems were found bands characteristic to borate based glasses structure such as: boroxol rings, diborate, pyroborate and metaborate groups. It was evaluated the influence of both Ag2O/PbO ratio and CuO variation on the short-range order (SRO) of the network in order to obtain information concerning the local structure of copper-doped 3B2O3-PbO-Ag2O glass matrices. Increasing the Ag2O/PbO ratio induces a higher degree of glass network disorder. Controlled addition of cooper ions determined a decrease in the intensity of the borate Raman bands for both systems denoting a progressively disorder of their vitreous network. | |||||||
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