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Structure and magnetic properties of hydrides based on Uranium bcc alloys

Published online by Cambridge University Press:  09 May 2014

Ladislav Havela ,
Mykhaylo Paukov ,
Ilya Tkach ,
Zdenek Matej ,
N.-T.H. Kim-Ngan  and
Alexander V. Andreev
Ladislav Havela
Affiliation:
Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 12116 Prague 2, Czech Republic.
Mykhaylo Paukov
Affiliation:
Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 12116 Prague 2, Czech Republic.
Ilya Tkach
Affiliation:
Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 12116 Prague 2, Czech Republic.
Zdenek Matej
Affiliation:
Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 12116 Prague 2, Czech Republic.
N.-T.H. Kim-Ngan
Affiliation:
Institute of Physics, Pedagogical University, Podchorazych 2, 30-084 Krakow, Poland.
Alexander V. Andreev
Affiliation:
Institute of Physics, Academy of Sciences, Na Slovance 2, 18221 Prague, Czech Republic.
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Abstract

γ-U alloys with Mo or Zr are more resistant to hydrogen than U metal. High pressures of H are needed to produce hydrides. Amorphous structure of UH3Mox can be represented as the cubic structure of β-UH3 type with grain size around 1 nm. UH3Zrx are formed in the cubic α-UH3 type of structure. All the hydrides are ferromagnets, with magnetic parameters (magnetic moments, Curie temperature) exceeding those of β-UH3 (0.9 μB/U, 165-170 K). It is deduced that α-UH3 has magnetic properties very similar to β-UH3, despite rather different U-U spacing.

Keywords

Umagnetic propertieshydrogenation

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Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1683: Symposium S – Advanced Materials for Rechargeable Batteries , 2014 , mrss14-1683-s03-02
Copyright
Copyright © Materials Research Society 2014 

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