Structure and magnetic properties of hydrides based on Uranium bcc alloys. Issue 1683 (9th May 2014)

• Record Type: Journal Article
• Authors: Havela, Ladislav; Paukov, Mykhaylo; Tkach, Ilya; Matej, Zdenek; Kim-Ngan, N.-T.H.; Andreev, Alexander V.
• Is Part Of: MRS proceedings. Issue 1683(2014)
• Publication Date: 2014-05-09
• Subjects: U, -- magnetic properties, -- hydrogenation; Electrical engineering -- Congresses; Physics -- Congresses; Materials -- Research -- Congresses; Materials science -- Congresses; 620.11
• DOI: 10.1557/opl.2014.431
• Languages: English
• ISSNs: 0272-9172

Abstract

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 UH3 Mo x can be represented as the cubic structure of β-UH3 type with grain size around 1 nm. UH3 Zr x 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.