Abstract

The atomic structure of iron phosphate glasses containing uranium has been studied by complementary neutron and x-ray scattering techniques. by combining x-ray and neutron structure factors, detailed information about different pair interactions has been obtained. Most of the basic structural features such as coordination numbers and O-O and P-O distances in uranium containing glasses are the same as those in the base glass of batch composition 40Fe2O3-60P2O5 (mol %). However, the Fe-O distances change slightly with the addition of uranium. The observed structural parameters support a structural model in which the waste elements occupy voids in the Fe-O-P network, hence, not altering the basic structure of the parent iron phosphate glass.

Department(s)

Materials Science and Engineering

Second Department

Physics

Sponsor(s)

Argonne National Laboratory
United States. Department of Energy. Office of Basic Energy Sciences
United States. Department of Energy

Keywords and Phrases

Atomic Structure; Bond Lengths; Coordination Number; High-Level Radioactive Wastes; Iron Compounds; Iron Phosphates; Neutron Diffraction; Neutron-Nucleus Scattering; Phosphate Glass; Phosphate Glasses; Structural Chemical Analysis; Uranium; Voids (Solid); X-Ray Diffraction; X-Ray Scattering

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2000 American Institute of Physics (AIP), All rights reserved.

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