High-pressure phases of uranium monophosphide studied by synchrotron x-ray diffraction
- 15 May 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 37 (15) , 8713-8718
- https://doi.org/10.1103/physrevb.37.8713
Abstract
X-ray diffraction studies have been performed on UP powder for pressures up to 51 GPa using synchrotron radiation and a diamond-anvil cell. At ambient pressure UP has the rocksalt structure. The bulk modulus has been determined to =102(4) GPa and its pressure derivative to =4.0(8). The cubic phase has been found to transform to a new phase, UP II, at about 10 GPa. UP II can be characterized by a rhombohedral Bravais lattice. UP II transforms to an orthorhombic phase, UP III, at 28 GPa. No volume change has been observed at the two transitions. The influence of the 5f electrons on the transformations is discussed.
Keywords
This publication has 22 references indexed in Scilit:
- Pressure-volume behaviour of UP, USb and UTePhysica B+C, 1986
- High pressure v-ray study of UP and USbJournal of the Less Common Metals, 1986
- Measurement of anisotropic stress field in a gasketed diamond-anvil cellPhysica B+C, 1986
- Volume and structural behavior of UP and USb up to 25 GPaPhysical Review B, 1986
- A new high-pressure phase of uranium nitride studied by X-ray diffraction and synchrotron radiationJournal of Applied Crystallography, 1985
- Crystal growth of uranium monochalcogenides and monopnictides by mineralization in a special electron beam furnaceJournal of Crystal Growth, 1984
- High pressure x-ray diffraction experiments on US using synchrotron radiationJournal of the Less Common Metals, 1984
- Raman spectroscopy of solid nitrogen up to 374 kbarSolid State Communications, 1979
- Specific volume measurements of Cu, Mo, Pd, and Ag and calibration of the ruby R1 fluorescence pressure gauge from 0.06 to 1 MbarJournal of Applied Physics, 1978
- High pressure investigations on UO2 and UPJournal of Nuclear Materials, 1976