Glass continuous random network

The first theory of the structure of glass to become widely accepted was that of Zachariasen (1932), called the random network theory [now commonly referred to as the continuous random network (CRN) theory]. This arose... 

One of the early models to describe the amorphous state was by Zachariasen (1932), who proposed the continuous random network model for covalent inorganic glasses. We are now able to distinguish three types of continuous random models ... 

Continuous random network (applicable to covalent glasses)... 

The short range order and long range disorder lead to the model of the continuous random network, introduced by Zachariasen (1932) to describe glasses such as silica. The periodic crystalline structure is replaced by a random network in which each atom has a specific number of bonds to its immediate neighbors (the coordination). Fig. 

The simplest model of glass structure, Zachariasen s continuous random network model, represents glasses as being formed by random... 

The structure of vitreous silica consists of a continuous, random network of corner-sharing Si04 tetrahedra. Extending this model to alkali silicate glasses requires that the alkali cations be regarded as network modifiers, as shown in Figure 11 The addition of each alkali oxide unit results in the replacement of... 

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