AC conductivity of Se-Ge-As glassy system in relation to rigidity percolation

摘要: Measurements of conductivity (ac & dc) and dielectric constant (∈) have been made for amorphous alloyed samples Se0.75Ge0.25−xAsxwith x= 0.05, 0.10, 0.15 0.20 at different temperature (289 to 389 K) various frequencies (102to 105Hz). The the these glasses explained on basis correlated barrier hopping (CBH) model. Recent progress in applying percolation theory explain properties glass forming ability chalcogenide is critically reviewed. Percolation shown be relevant liquid-state behavior glass-forming Se0.75Ge0.25−xAsxchalcogenide system. relationship between optical gap (ΔEg) chemical composition also discussed terms average heat atomization (Hs) coordination number (r). These findings provide some extent an important link experimental theoretical results.