Hydrogen in U-T alloys: Crystal structure and magnetism of UH3-V

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10427993" target="_blank" >RIV/00216208:11320/21:10427993 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=L3Xs9KnxNR" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=L3Xs9KnxNR</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jallcom.2020.157406" target="_blank" >10.1016/j.jallcom.2020.157406</a>

Result language
angličtina
Original language name
Hydrogen in U-T alloys: Crystal structure and magnetism of UH3-V
Original language description
U-V alloys with variable phase composition were prepared using ultrafast cooling. 15 at.% V is not sufficient to suppress entirely the orthorhombic alpha-U type of phase and higher alloying concentrations lead to a segregation of pure vanadium. The alloys are stable with respect to H-2 exposure at pressures of 10(5) Pa. Nevertheless hydrogenation proceeds slowly at high H-2 pressures. Resulting hydrides exhibit a common beta-UH3 structure. This is unusual among the U-T systems, which yield either alpha-UH3 or nano-crystalline beta-UH3 structures. The UH3-V system is ferromagnetic with the Curie temperatures monotonously increasing with the V concentration to T-C = 190 K for 15 at.% V. Magnetic moments remain on the level of 1.0 mB/U. The results prove that the increase of T-C in alloyed U hydrides of the UH3-T type does not depend on particular structure details or type of the T element, although the latter modifies somewhat the maximum T-C values achieved. The situation can be understood assuming that the substitution of U by T provides an enhanced H/U ratio, while the U-H interaction is a prominent element of the 5f moments formation and ordering. (C) 2020 Elsevier B.V. All rights reserved.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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