Anomalous X-ray scattering study of local structures in the superionic conducting glass (AgBr)0.4 (Ag2O)0.3 (GeO2)0.3

Kang, S and Waseda, Y and Jacob, KT and Saito, M (2000) Anomalous X-ray scattering study of local structures in the superionic conducting glass (AgBr)0.4 (Ag2O)0.3 (GeO2)0.3. In: Science and Technology of Advanced Materials, 1 (1). pp. 37-42.

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Abstract

The local structural information in the near-neighbor region of superionic conducting glass (AgBr)0.4(Ag2O)0.3(GeO2)0.3 has been estimated from the anomalous X-ray scattering (AXS) measurements using Ge and Br K absorption edges. The possible atomic arrangements in the near-neighbor region of this glass were obtained by coupling the results with the least-squares variational method so as to reproduce two differential intensity profiles for Ge and Br as well as the ordinary scattering profile. The coordination number of oxygen around Ge is found to be 3.6 at a distance of 0.176 nm, suggesting the GeO4 tetrahedral unit as the probable structural entity in this glass. Moreover, the coordination number of Ag around Br is estimated as 6.3 at a distance of 0.284 nm, suggesting an arrangement similar to that in crystalline AgBr.

Item Type:	Journal Article
Publication:	Science and Technology of Advanced Materials
Publisher:	Institute of Physics and National Institute of Materials Science
Additional Information:	Copyright of this article belongs to Institute of Physics and National Institute of Materials Science.
Keywords:	Superionic conducting glass;Silver bromide;Silver oxide; Germanium oxide;Anomalous X-ray scattering;Local structure
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	29 Dec 2011 08:01
Last Modified:	29 Dec 2011 08:01
URI:	http://eprints.iisc.ac.in/id/eprint/42711

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