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Effect of CuO addition on the high-field and high-pressure behavior of microwave-prepared lead vanadate glasses

Vaidhyanathan, B and Asokan, S and Rao, KJ (2000) Effect of CuO addition on the high-field and high-pressure behavior of microwave-prepared lead vanadate glasses. In: Journal of Materials Research, 15 (2). pp. 518-529.

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Abstract

High-field and high-pressure behavior of microwave-prepared xCuO:(45-x) PbO: 55V(2)O(5) (x = 0 to 20) glasses were investigated for the first time. It was found that the addition of CuO significantly alters the nonlinear I-V characteristics of these glasses; while the glasses with x = 10 exhibit a current-controlled negative resistance behavior associated with a memory type transition, glasses with x = 15 show a threshold- type behavior. Remarkable differences were also noticed in the high-pressure electrical resistivity behavior between the low- and high-CuO-containing glasses. Corroborative thermal, electrical, microscopic, and spectroscopic measurements were carried out to understand the structure-property relations. A structural model was proposed, which is based on the chemical nature of the constituents present in the glasses. The model accounts well for the various observed properties of these glasses.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to the Materials Research Society.
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation and Applied Physics (Formally ISU)
Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 11 Oct 2004
Last Modified: 19 Sep 2010 04:15
URI: http://eprints.iisc.ernet.in/id/eprint/1744

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