Local and medium range order in alkali borate glasses: an overview of recent solid state NMR results

Author: Ratai E.-M.   Janssen M.   Epping J. D.   Chan J. C.C.   Eckert H.  

Publisher: Society of Glass Technology

ISSN: 0031-9090

Source: Physics and Chemistry of Glasses - European Journal of Glass Science and Technology Part B, Vol.44, Iss.2, 2003-04, pp. : 45-53

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Abstract

During the past 40 years, solid state NMR has provided immensely detailed information on the structural organisation of alkali borate glasses. While early wideline NMR work concentrated on the structural speciation of boron in the network, more recent high resolution and double resonance studies have provided more intricate detail on the location and the spatial distribution of the alkali ions. In particular, this work has provided some insights into the structural origins of the mixed alkali effect. The present contribution attempts to summarise the current state of knowledge, including the unresolved issues in the structural description of single and mixed alkali borate glasses.

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