Unusual 5f magnetism in the U.sub.2./sub.Fe.sub.3./sub.Ge ternary Laves phase: a single crystal study

0392665 - FZÚ 2014 RIV GB eng J - Journal Article
Henriques, M.S. - Gorbunov, Denis - Waerenborgh, J.C. - Havela, L. - Shick, Alexander - Diviš, M. - Andreev, Alexander V. - Gonçalves, A.P.
Unusual 5f magnetism in the U₂Fe₃Ge ternary Laves phase: a single crystal study.
Journal of Physics-Condensed Matter. Roč. 25, č. 6 (2013), s. 1-9. ISSN 0953-8984. E-ISSN 1361-648X
R&D Projects: GA ČR GAP204/12/0150; GA AV ČR IAA100100912; GA ČR(CZ) GAP204/10/0330
Institutional support: RVO:68378271
Keywords : actinide alloys * uranium intermetallics * single crystal * magnetization * high magnetic fields
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.223, year: 2013

Magnetic properties of the intermetallic compound U2Fe3Ge were studied on a single crystal. The compound crystallizes in the hexagonal Mg2Cu3Si structure and U2Fe33Ge displays ferromagnetic order below Curie temperature 55 K. It is an exception to the Hill rule, as the nearest inter-uranium distances do not exceed 3.2 Å. Magnetic moments lie in the basal plane of the hexagonal lattice, with the spontaneous magnetic moment Ms = 1.0 μB/f at T = 2 K. No anisotropy within the basal plane is detected. U2Fe3Ge exhibits low magnetic anisotropy, whose field does not exceed 10 T. The dominance of U in the magnetism of U2Fe3Ge is suggested by the 57Fe Mössbauer spectroscopy study, which indicates very low or even zero Fe moments.
Permanent Link: http://hdl.handle.net/11104/0221461