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M. Popescu, M. Leonovici

Paracrystallinity or randomness: a challenge for noncrystalline structure

Journal of Optoelectronics and Advanced Materials 8 (2006) 1831–1837

The structure of low coordinated disordered materials can be understood in the frame of basically different theories: the formation of a continuous random network with all the valence bonds satisfied, the formation of small clusters (amorphites) having all the bond at the margins satisfied (closed clusters) or open clusters with many dangling bonds that are partially compensated due to the formation of valence alternation pairs, and last but not least the formation of so-called nano-paracrystalline structures, i.e. deformed nano-crystalline structures. We show that an intermediate model based on a mixture of closed and open clusters as well as layer like configurations can explain the structure and properties of the binary arsenic chalcogenide glasses.

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Cited Articles

  1. Ohlídal I., Franta D., Frumar M., Jedelský J., Omasta J.,
    Influence of composition, exposure and thermal annealing on optical properties of As–S chalcogenide thin films,
    Chalcogenide Letters 1 (2004) 1–10