Three Dimensional Model of Structure and Electronic Properties of Chalcogenide Glasses

  • S. R. Ovshinsky
  • K. Sapru
Part of the Institute for Amorphous Studies Series book series (IASS)


An important difference between crystalline and amorphous structures is that while in crystals the local environment is the same everywhere, in amorphous materials one finds a large spectrum of 3-dimensionally varying spatial and bonding relationships. This gives rise to unique energy interactions, orbital overlaps and bonding configurations of the lone pair electrons associated with the group VI chalcogen atoms which do not occur in crystals. We present the ‘ball and spoke’ models we have built to test out the concepts of lone pair relationships discussed earlier (Ovshinsky 1972, Ovshinsky 1973, Ovshinsky and Fritzsche 1973).


Lone Pair Lone Pair Electron High Resistance State Memory Material Bonding Configuration 


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Copyright information

© Plenum Press, New York 1991

Authors and Affiliations

  • S. R. Ovshinsky
    • 1
  • K. Sapru
    • 1
  1. 1.Energy Coversion Devices, Inc.TroyUSA

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