A High Energy X-Ray and Neutron Scattering Study of Iron Phosphate Glasses Containing Uranium

Mevlüt Karabulut
G. K. Marasinghe
C. S. Ray, Missouri University of Science and Technology
Y. S. Badyal
M.-L. Saboungi
S. Shastri
D. Haeffner
George Daniel Waddill, Missouri University of Science and Technology
D. E. Day, Missouri University of Science and Technology

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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.