Journal Article10.1080/08957959608201425
Diffraction Study of Actinides under Pressure
U. Benedict,Claude Dufour,S. Heathman,Tristan Le Bihan,J.S. Olsen,Leif Gerward,Richard G. Haire,Yogesh K. Vohra,Guoliang Gu +8 more
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TL;DR: In this paper, the authors describe a number of in situ high pressure x-ray diffraction work for radonium and thorium actinides at synchrotrons and neutron facilities.
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Abstract: Uranium and thorium have sufficiently low radioactive dose rates to allow their study at synchrotrons and neutron facilities. Correspondingly, numerous compounds of these two actinides have been studied under pressure by synchrotron x-ray diffraction. The maximum pressures reached were on the order of 60-80 GPa, and 300 GPa in one case. The situation is much more difficult for all other actinides. Their high level of radioactivity has up to now prevented their study at synchrotrons, except in a few special cases. In contrast, all actinide metals available in sufficient quantities, and a large number of compounds of highly radioactive actinides, have been studied in highpressure laboratory facilities. Recent examples of in situ high pressure x-ray diffraction work will be described.
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Citations
High-pressure powder X-ray diffraction at the turn of the century
TL;DR: A review of powder X-ray diffraction at high-pressures generated by devices installed at synchrotron radiation sources, in particular to the principles of operation of high-pressure-high-temperature cells is provided in this paper.
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Pressure-induced structural phase transition and electronic properties of actinide nitrides: Ab initio calculations
TL;DR: In this paper, the structural and electronic properties of monophospides of thorium, uranium and neptunium were investigated by means of the self-consistent tight binding linear muffin-tin-orbital (TB-LMTO) method within the local density approximation (LDA).
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Pressure Induced Structural Phase Transition and Electronic Properties of Actinide Monophospides: Ab-initio Calculations
Chandrabhan Makode,Sankar P. Sanyal +1 more
TL;DR: Ab-initio calculations reveal structural phase transitions in Plutonium and Americium monobismuthides under pressure, transitioning from NaCl to CsCl structure at 45-4.5 GPa, with lattice parameters and bulk modulus in agreement with experimental and theoretical work.
References
Pressure-volume relationship and pressure-induced electronic and structural transformations in Eu and Yb monochalcogenides
TL;DR: In this paper, pressure-volume relationships for EuSe, EuS, YbSe and YbS have been obtained from high-pressure x-ray-diffraction studies to nearly 300 kbar.
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Pressure-Induced Electronic Collapse and Structural Changes in Rare-Earth Monochalcogenides
TL;DR: In this article, high-pressure x-ray studies on rare-earth monochalcogenides have been carried out to investigate the compressibilities of the monotellurides of Pr, Sm, Eu, Tm, and Yb and the monoselenide and sulfide of Sm.
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Comparative aspects of the high-pressure behaviour of lanthanide and actinide compounds
TL;DR: In this paper, a comparison of the CeX compounds with ThX and PuX is made, where the largest amount of data has been obtained, and the available information on high-pressure structures, transition pressures and compressibilities is presented in the form of graphs and tables.
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High-pressure resistance study of UTe
TL;DR: In this paper, low-temperature resistance measurements were performed on UTe crystals in the pressure range from 1 GPa to 20 GPa and the Curie temperature obtained as the maximum in the temperature derivative dR/dT, increases strongly with pressure.
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Pressure-induced phase transition in α-Pu
TL;DR: In this paper, high purity α-Pu was studied by X-ray diffraction in a diamond anvil cell up to 62 GPa, where a structural phase transition occurs around 40 GPa.
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