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Atomic structure of amorphous Al90FexCe10−x

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Abstract

The atomic structure of liquid-quenched amorphous Al90FexCe10−xx = 5,7) was studied by pulsed neutron and x-ray scattering. The atomic pair-density function determined by pulsed neutron diffraction indicates that a significant portion of Al–Fe distances is anomalously short, while some part of the Al–Al distances is anomalously long. Both neutron and x-ray scattering showed the presence of a prepeak in the structure factor. These results suggest that a strong interaction between A1 and Fe modifies the structure of this glass, leading to chemical and topological short-range ordering.

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Authors and Affiliations

  1. Department of Electrical Engineering, The University of Pennsylvania, Philadelphia, 19104-6314, Pennsylvania, USA

    H. Y. Hsieh

  2. Department of Materials Science and Engineering, The University of Pennsylvania, Philadelphia, 19104-6272, Pennsylvania, USA

    B. H. Toby & T. Egami

  3. Department of Physics, The University of Virginia, Charlottesville, 22901, Virginia, USA

    Y. He & S. J. Poon

  4. Department of Materials Science, University of Virginia, Charlottesville, 22901, Virginia, USA

    G. J. Shiflet

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  1. H. Y. Hsieh
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  2. B. H. Toby
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  3. T. Egami
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  4. Y. He
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  5. S. J. Poon
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  6. G. J. Shiflet
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Hsieh, H.Y., Toby, B.H., Egami, T. et al. Atomic structure of amorphous Al90FexCe10−x. Journal of Materials Research 5, 2807–2812 (1990). https://doi.org/10.1557/JMR.1990.2807

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  • DOI: https://doi.org/10.1557/JMR.1990.2807

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