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On the Determination of Partial RDFs for AmorphousMaterials

Published online by Cambridge University Press:  15 February 2011

L. C. Qin  and
L. W. Hobbs
L. C. Qin
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
L. W. Hobbs
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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Abstract

Radial distribution functions (RDFs) for vitreous silica (V-SiO2)have been obtained from energy-filtered electron diffraction data obtainedin the HB5 scanning transmission electron Microscope. Results have beencompared with those obtained from high-resolution neutron diffractionexperiments, and are in good agreement within experimental errors. It wasfound to be impractical to obtain partial RDFs for this material fromcombined neutron, X-ray and electron diffraction data, because thesimilarities in characteristics of X-ray and electron scattering causeindeter-Minacies. A criterion equation has been given to determinefeasibility.

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References

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