High-pressure resistivity behavior of As–Te–In glasses – the effect of network topological thresholds

Sharmila, BH and Devaraju, JT and Asokan, S (2002) High-pressure resistivity behavior of As–Te–In glasses – the effect of network topological thresholds. In: Journal of Non-Crystalline Solids, 303 (3). pp. 372-378.

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Abstract

Electrical resistivity measurements have been carried out on As–Te–In glasses up to a pressure of 8 GPa using an Opposed Anvil Cell. It is found that the electrical resistivity and conductivity activation energy decrease continuously with pressure and the samples become metallic at pressures in the range 1.5–2.5 GPa. The variation with composition of the normalized electrical resistivity at different pressures suggests the possibility of rigidity percolation and chemical thresholds occurring around the average coordination of left angle bracketrright-pointing angle bracket=2.65 and 2.7 respectively. It is also observed that As–Te–In samples remain amorphous when they undergo metallization at high pressures, which is analogous to the threshold switching exhibited by these samples.

Item Type:	Journal Article
Publication:	Journal of Non-Crystalline Solids
Publisher:	Elsevier
Additional Information:	Copyright of this article belongs to Elsevier.
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	02 Jun 2006
Last Modified:	30 Jun 2011 11:57
URI:	http://eprints.iisc.ac.in/id/eprint/7366

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