X-ray powder diffraction study of the high pressure behaviour of uranium dioxide
- 1 January 1982
- journal article
- Published by EDP Sciences in Journal de Physique Lettres
- Vol. 43 (6), 171-177
- https://doi.org/10.1051/jphyslet:01982004306017100
Abstract
Uranium dioxide was studied by X-ray powder diffraction under pressure in diamond anvil cells up to 40 GPa. A gradual transition to a low symmetry high pressure phase (UO2 II) occurs in the range 29 to 38 GPa. On pressure release, UO2 II is conserved by hysteresis below 15 GPa, but retransforms completely to fcc UO2 I above 5 GPa. The transformation is likely to be a purely structural one which is not due to delocalization of 5f electronsKeywords
This publication has 7 references indexed in Scilit:
- Cohesive properties of CaF2and UO2in the atomic sphere approximationJournal of Physics C: Solid State Physics, 1980
- Effect of pressure on the crystal lattice parameters of CeAl2, PrAl2, YbAl2, and CeSPhysica Status Solidi (a), 1980
- Electronic structure and Coulomb correlation energy in UO2 single crystalSolid State Communications, 1980
- X-ray photoelectron-spectroscopy study of oxides of the transuranium elements Np, Pu, Am, Cm, Bk, and CfPhysical Review B, 1977
- Pressure-volume relationship and pressure-induced electronic and structural transformations in Eu and Yb monochalcogenidesPhysical Review B, 1974
- High-Pressure Equation of State for NaCl, KCl, and CsClJournal of Applied Physics, 1971
- Elasticity and constitution of the Earth's interiorJournal of Geophysical Research, 1952