First-order magnetization process as a tool of magnetic-anisotropy determination: application to the uranium-based intermetallic U.sub.3./sub.3Cu.sub.4./sub.Ge.sub.4./sub.

0462231 - FZÚ 2017 RIV US eng J - Journal Article
Gorbunov, Denis - Henriques, Margarida Isabel Sousa - Andreev, Alexander V. - Skourski, Y. - Richter, M. - Havela, L. - Wosnitza, J.
First-order magnetization process as a tool of magnetic-anisotropy determination: application to the uranium-based intermetallic U₃3Cu₄Ge₄.
Physical Review. B. Roč. 93, č. 6 (2016), 1-7, č. článku 064417. ISSN 1098-0121
R&D Projects: GA ČR GA16-03593S; GA ČR(CZ) GA14-03276S; GA MŠMT LO1603
EU Projects: European Commission(XE) CZ.2.16/3.1.00/24510
Institutional support: RVO:68378271
Keywords : uranium intermetallics * single crystals * ferromagnetism * magnetic anisotropy
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 3.736, year: 2014

Uranium-based intermetallic compounds often display very strong magnetic anisotropies, the energy of which is usually not directly accessible by common experimental methods. Here, we report on static- and pulsed-field studies of U3Cu4Ge4. This material orders ferromagnetically at TC = 73 K with the easy magnetization direction along the a axis and a strong bc-plane anisotropy. The magnetization measured for fields along the hard b direction displays a first-order magnetization process that can be described well by use of a phenomenological theory yielding anisotropy constants up to the sixth order. This phenomenological description may also be applied for other uranium-based compounds.

Permanent Link: http://hdl.handle.net/11104/0261720