Neutron and X-Ray Studies of Interfaces

  • J. K. Kjems
  • P. Schofield


In this lecture we will discuss how information about the interface morphology in complex heterogeneous media can be derived from scattering experiments. The practical systems we have in mind are high surface area aluminas which are used as bearers for catalysts and as components in LiI/ Al2O3 composites. The latter show enhanced Li-mobility, probably due to an interface reaction1. Other examples are minerals2, coals3 and carbon blacks4 for which evidence of fractal character of the interfaces has been presented.


Carbon Black Fractal Character Scatter Length Density Scattering Length Density Lignite Coal 
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  1. 1.
    F. W. Poulsen, N. Hessel Andersen, B. Kindl, and J. Schoonmann, Properties of LiI-Alumina Composite Electrolytes, Solid State Ionics 9 and 10: 119–122 ( 1983.CrossRefGoogle Scholar
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    D. Avnir, D. Farin, and P. Pfeifer, Molecular Fractal Surfaces, Nature 308: 261–263 (1984).CrossRefGoogle Scholar
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    H. D. Bale and P. W. Schmidt, Small-Angle X-Ray-Scattering Investigation of Submicroscopic Porosity with Fractal Properties, Phys. Rev. Letters 53: 596–599 (1984).CrossRefGoogle Scholar
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    J. K. Kjems and A. Le Méhauté, to be published.Google Scholar
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    G. Porod, General Theory, in: “Small Angle X-Ray Scattering”, 0. Glatter and 0. Kratky, ed., Academic Press, London (1982).Google Scholar
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    P.-Z. Wong, J. W. Cable and P. Dimon,, J. Appl. Phys.: 55, 2377–2382 (1984).CrossRefGoogle Scholar
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    B. B. Mandelbrot, “The Fractal Geometry of Nature”, Freeman, San Francisco (1983).Google Scholar
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    T. Witten, private communication.Google Scholar
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    P.-Z. Wong, to be published.Google Scholar

Copyright information

© Springer Science+Business Media New York 1991

Authors and Affiliations

  • J. K. Kjems
    • 1
  • P. Schofield
    • 2
  1. 1.Riso ø National LaboratoryRoskildeDenmark
  2. 2.Materials Physics and Metallurgy DivisionsAERE HarwellOxfordshireUK

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