A Single-Crystal Study Of The Defect Chemistry And Transport-Properties Of Silver Selenide, Ag2+Delta-Se

Shukla, AK and Vasan, HN and Rao, CNR (1981) A Single-Crystal Study Of The Defect Chemistry And Transport-Properties Of Silver Selenide, Ag2+Delta-Se. In: Proceedings of the Royal Society A: Mathematical, Physical & Engineering Sciences, 376 (1767). pp. 619-633.

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Abstract

Electronic and ionic conductivities of silver selenide crystal (Ag$_2+\delta$ Se) have been measured over a range of stoichiometry through the $\alpha - \beta$ transition by using solid state electrochemical techniques. In the high temperature $\beta$-phase Ag$_2$Se shows metallic behaviour of electronic conductivity for high values of $\delta$; with decrease in $\delta$, the conductivity of the material exhibits a transition. The magnitude of change in electronic conductivity at the $\alpha - \beta$ transition is also determined by stoichiometry. Ionic conductivity of the $\beta$-phase does not vary significantly with stochiometry. Ionic conductivity of the $\beta$-does not vary significantly with stoichiometry. A model to explain the observed transport properties has been suggested.

Item Type:	Journal Article
Publication:	Proceedings of the Royal Society A: Mathematical, Physical & Engineering Sciences
Publisher:	The Royal Society
Additional Information:	Copyright of this article belongs to The Royal Society.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	16 Sep 2011 09:18
Last Modified:	16 Sep 2011 09:18
URI:	http://eprints.iisc.ac.in/id/eprint/40504

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