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Volume 10 (2) 2004, 203-218

MOLECULAR DYNAMICS STUDY OF SHORT AND MEDIUM RANGE ORDER IN MODIFIED BGO GLASSES

Walentynowicz Adam 1, Witkowska Agnieszka 1,2, Białoskórski Michał 1,2, Rybicki Jarosław 1,2*, Feliziani Sandro 3, Frigio Sandro 3, Cosimi Giancarlo 3

In the paper we present our recent Molecular Dynamics (MD) simulations of the structure of
bismuth-germanate (BGO) glasses of x[pBi2 (1-p)Bi2O3](1-x)GeO2 composition, where x denotes the content of the bismuth oxide in unmodified glasses, and p – the fraction of neutral bismuth that can appear in the surface modification process (e.g. annealing in hydrogen atmosphere). We consider glasses of compositions x = 0.1, 0.2, 0.3 and reduction degrees p = 0, 0.25, 0.5, 0.75, 1. The simulation results are analysed in detail and compared with the structural data provided by other authors.

Received:

Rec. 19 May 2004

DOI:   10.12921/cmst.2004.10.02.203-218

OAI:   oai:lib.psnc.pl:572

Abstract:

In the paper we present our recent Molecular Dynamics (MD) simulations of the structure of bismuth-germanate (BGO) glasses of x[pBi2 (1-p)Bi2O3](1-x)GeO2 composition, where x denotes the content of the bismuth oxide in unmodified glasses, and p – the fraction of neutral bismuth that can appear in the surface modification process (e.g. annealing in hydrogen atmosphere). We consider glasses of compositions x = 0.1, 0.2, 0.3 and reduction degrees p = 0, 0.25, 0.5, 0.75, 1. The simulation results are analysed in detail and compared with the structural data provided by other authors.

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