| Issue |
Europhys. Lett.
Volume 75, Number 5, September 2006
|
|
|---|---|---|
| Page(s) | 778 - 783 | |
| Section | Condensed matter: structural, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2006-10173-x | |
| Published online | 02 August 2006 | |
Anomalous electrical switching behaviour in phase-separated
bulk 
chalcogenide glasses
Department of Instrumentation, Indian Institute of Science Bangalore 560012, India
Corresponding author: sasokan@isu.iisc.ernet.in
Received:
19
April
2006
Accepted:
13
July
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 
, is associated with the percolation of phase
in the Ge-Se matrix.
PACS: 61.43.Fs – Glasses / 64.75.+g – Solubility, segregation, and mixing; phase separation / 72.60.+g – Mixed conductivity and conductivity transitions
© EDP Sciences, 2006
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