REDDY, C. N.; GWONDA, V. C. V.; CHAKRADHAR, R. P. S.

doi:10.1016/j.jnoncrysol.2007.07.011

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REDDY, C. N.
Department of Physics

GWONDA, V. C. V.
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

CHAKRADHAR, R. P. S.
Glass Technology Laboratory

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Journal of Non-Crystalline Solids. 2008, vol. 354, n° 1, p. 32-40

Elsevier

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This paper describes elastic properties and spectroscopic studies on the xPbO-50B2O3-(50 - x)V2O5 (where x = 20, 25, 30, 35, 40, 45 and 49 mol%) glass system. Elastic moduli and spectroscopic parameters exhibit compositional dependent trends and the existence of characteristic borovanadate groups in these glasses. The bulk modulus and shear modulus increase with the concentration of [BO4/2]- and [B2V2O9]2- groups, which increases the dimensionality of the network. The scheme of modification of borate and vanadate groups has been explained by considering the Sanderson's electronegativity principle. Analysis of infrared(IR) and magic angle spinning-nuclear magnetic resonance (MAS-NMR) spectra suggests the presence of characteristic diborovanadate groups also in these glasses. The results are examined in view of the structural groups formed due to the presence of PbO as a modifier.< Leer menos

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Acoustic properties

Borates

FTIR measurements

Glass transition

NMR

MAS-NMR

NQR

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Elastic properties and structural studies on lead-boro-vanadate glasses

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