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  • Sunday, October 1, 1995
  • Rigidity Percolation and Chemical Ordering in Ge-In-Se Glasses
  • Published at:PHYSICA STATUS SOLIDI B-BASIC RESEARCH Volume: 191 Issue: 2 Pages: 243-247 Published: OCT 1995
  • The dependence of the mean atomic volume V-a of chalcogenide glasses belonging to the GexIn6Se94-x and GexIn12Se88-x families of the Ge-In-Se system, on the average coordination number Z is investigated. The V-a-Z plots for both families display maxima at Z = 2.75 and 2.83 corresponding to the tie-line composition in In-6 and In-12 families, respectively. The V-a-Z dependence for the In-6 family exhibits a minimum at Z = 2.54 and a broad local maximum at Z = 2.67, and that of the In-12 family shows a marked change in slope at Z = 2.50. These results are discussed in the framework of the chemically ordered covalent network model, Tanaka's model of topological transition, and the Phillips-Thorpe model of rigidity percolation.


    Source: PHYSICA STATUS SOLIDI B-BASIC RESEARCH    Volume: 191    Issue: 2    Pages: 243-247    Published: OCT 1995  

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Ghassan Muhammad Saffarini, Professor of experimental physics, An-Najah National University
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