Characterization of binary Uranuim oxides by infared spectroscopy

Journal Article · Fri Apr 01 04:00:00 EST 1994 · Applied Spectroscopy

DOI:https://doi.org/10.1366/000370294775268893· OSTI ID:241023

Allen, G C; Holmes, N R ^[1]

---

1. Univ. of Bristol (United Kingdom)

In this study, transmission infared spectra were recorded for 15 uranium oxides previously characterized by X-ray diffraction. The infared spectra obtained demonstrated that all the uranium oxides studied could be distinguished, even for the closely similiar structures of UO{sub 2} and U{sub 4}O{sub 9}. The infrared studies of U{sub 4}O{sub 9} near the temperature of the {alpha}-U{sub 4}O{sub 9} to {beta}-U{sub 4}O{sub 9} phase transition showed that an absorption at 670 cm{sup -1} could be related to the ordering of oxygen interstitials in the flourite lattice. A similiar absorption was observed for {beta}-U{sub 3}O{sub 7} but was found to be absent in {alpha}-U{sub 3}O{sub 7}. The local coordination of oxygen/metal clusters in {beta}-U{sub 4}O{sub 9} and {beta}-U{sub 3}O{sub 7} appeared to be similiar. 22 refs., 4 fig., 2 tab.

• Sponsoring Organization: USDOE
• OSTI ID: 241023
• Journal Information: Applied Spectroscopy, Journal Name: Applied Spectroscopy Journal Issue: 4 Vol. 48; ISSN 0003-7028; ISSN APSPA4
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
ABSORPTION SPECTROSCOPY
PHASE TRANSFORMATIONS
URANIUM OXIDES