Anomalous electrical switching behaviour in phase-separated bulk chalcogenide glassesPulok Pattanayak and S. Asokan
Department of Instrumentation, Indian Institute of Science Bangalore 560012, India
received 19 April 2006; accepted in final form 13 July 2006
published online 2 August 2006
Bulk, Se-rich ( ) glasses show anomalous electrical switching behaviour which is attributed to difference in the thermal conductivities of inclusions and GeSe base glass. The present results also show that there is a sharp drop in switching voltage with silver addition, which is due to the higher metallicity of silver and the presence of ions. Further, the leveling of threshold voltage () around x = 0.10, is associated with the percolation of phase in the Ge-Se matrix.
61.43.Fs - Glasses.
64.75.+g - Solubility, segregation, and mixing; phase separation.
72.60.+g - Mixed conductivity and conductivity transitions.
© EDP Sciences 2006