Structure and properties of hydrides of gamma-U alloys

0449076 - FZÚ 2016 RIV NL eng J - Článek v odborném periodiku
Havela, L. - Tkach, I. - Paukov, M. - Matěj, Z. - Drozdenko, D. - Andreev, Alexander V. - Kim-Ngan, N.-T.H.
Structure and properties of hydrides of gamma-U alloys.
Journal of Alloys and Compounds. Roč. 645, Oct (2015), S190-S192. ISSN 0925-8388. E-ISSN 1873-4669
Institucionální podpora: RVO:68378271
Klíčová slova: uranium * hydrogen * ferromagnetism * 5f states
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 3.014, rok: 2015

bcc-U alloys with Mo or Zr are more resistant to hydrogen than pure U metal. High pressures of hydrogen are needed to produce hydrides. Amorphous structure of (UH3)1-xMox can be represented as the cubic structure of beta-UH3 type with grain size around 1 nm. (UH3)1-xZrx are formed in the cubic alpha-UH3 type of structure. All the hydrides are ferromagnets, with magnetic parameters (magnetic moments, Curie temperature), which can exceed those of beta-UH3 (0.9 mB/U, 165–170 K). It is deduced that alpha-UH3 has magnetic properties very similar to beta-UH3, despite rather different U–U spacing.
Trvalý link: http://hdl.handle.net/11104/0250661