Evidence concerning the effect of topology on electrical switching in chalcogenide network glasses

Narayanan, Aravinda R and Asokan, S and Kumar, A (1996) Evidence concerning the effect of topology on electrical switching in chalcogenide network glasses. In: Physical Review B, 54 (7). pp. 4413-4415.

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Abstract

Electrical switching properties of Ge-As-Te glasses have been investigated over a wide range of mean coordination numbers $(\langle r \rangle)$ in a single composition tie line. The results obtained clearly indicate the modulation of the composition dependence of switching fields by network topology. Distinct change is observed in the slope of the composition dependence of switching field, at x=25 $(\langle r \rangle=2.4)$ and x=52.5 $(\langle r \rangle=2.67)$, which correspond to mechanical and chemical thresholds, respectively. Present results also rule out the earlier suggestions such as shifting of percolation threshold to higher $\langle r \rangle$ values and the likelihood of two isolated rigidity percolation thresholds in such glass systems.

Item Type:	Journal Article
Publication:	Physical Review B
Publisher:	American Physical Society
Additional Information:	Copyright of this article belongs to Amerian Physical Society.
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics Division of Physical & Mathematical Sciences > Physics
Date Deposited:	15 Dec 2006
Last Modified:	19 Sep 2010 04:33
URI:	http://eprints.iisc.ac.in/id/eprint/9127

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