On the Determination of Partial RDFs for Amorphous Materials

Abstract

Radial distribution functions (RDFs) for vitreous silica (v-SiO2) have been obtained from energy-filtered electron diffraction data obtained in the HB5 scanning transmission electron microscope. Results have been compared with those obtained from high-resolution neutron diffraction experiments, and are in good agreement within experimental errors. It was found to be impractical to obtain partial RDFs for this material from combined neutron, X-ray and electron diffraction data, because the similarities in characteristics of X-ray and electron scattering cause indeterminacies. A criterion equation has been given to determine feasibility.

This is a preview of subscription content, access via your institution.

References

  1. 1.

    F. Zernike and J.A. Prins, Z. Phys. 41, 184 (1927).

    Article  Google Scholar 

  2. 2.

    B.E. Warren, H. Krutter and O. Morninger, J. Am. Cer. Soc. 19, 202 (1936).

    CAS  Article  Google Scholar 

  3. 3.

    D.T. Keating, J. Appl. Phys. 34, 923 (1963).

    CAS  Article  Google Scholar 

  4. 4.

    J. Krogh-Moe, Acta Chem. Scand. 20, 2890 (1966).

    CAS  Article  Google Scholar 

  5. 5.

    B. K. Teo, EXAFS: Basic Principles and Data Analysis, (Springer-Verlag, Heidelberg, 1986).

    Google Scholar 

  6. 6.

    L.C. Qin, A.J. Garratt-Reed and L.W. Hobbs, Proc. 50th EMSA Ann. Meeting, p.350, (1992).

    Google Scholar 

  7. 7.

    E. Lorch, J. Phys. C2, 229 (1969).

    Google Scholar 

  8. 8.

    A.C. Wright, J. Non-Cryst. Solids 123, 129 (1990).

    CAS  Article  Google Scholar 

Download references

Acknoledgments

The authors wish to thank Dr. D.L. Griscom of the Naval Research Laboratory for the Supersil-W vitreous silica material used in this study. This research is supported by the Department of Energy, Office of Basic Energy Sciences, under Grant DE-FG02-89ER45396.

Author information

Affiliations

Authors

Corresponding author

Correspondence to L.C. Qin.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Qin, L., Hobbs, L. On the Determination of Partial RDFs for Amorphous Materials. MRS Online Proceedings Library 321, 39–46 (1993). https://doi.org/10.1557/PROC-321-39

Download citation