Onset of magnetic order in U.sub.2./sub.(Ni.sub.1-x./sub.Fe.sub.x./sub.).sub.2./sub.Sn-H

0395693 - FZÚ 2014 RIV KR eng J - Journal Article
Mašková, S. - Havela, L. - Kolomiets, A. - Miliyanchuk, K. - Andreev, Alexander V. - Nakotte, H. - Peterson, J. - Skourski, Y. - Yasin, S. - Zherlitsyn, S. - Wosnitza, J.
Onset of magnetic order in U₂(Ni_1-xFe_x)₂Sn-H.
Journal of the Korean Physical Society. Roč. 62, č. 10 (2013), s. 1542-1546. ISSN 0374-4884. E-ISSN 1976-8524
R&D Projects: GA ČR(CZ) GAP204/10/0330
Institutional support: RVO:68378271
Keywords : uranium compounds * magnetic properties * metal hydrides * non-Fermi liquid behavior * heavy fermion compounds
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 0.425, year: 2013

Specific heat and magnetic studies as a function of temperature and magnetic field for U2(Ni1-xFex)2Sn alloys (x = 0.0, 0.05, 0.1, 0.15, 0.2, 0.4, 0.6 and 0.8) and their hydrides (absorption of 2 H/f) were studied. For the parent alloys, antiferromagnetic order is rapidly suppressed with increasing Fe concentration and non-Fermi-liquid behavior was found for x = 0.2. Hydrogenation of the parent alloys causes a substantial increase of TN in Fe-low hydrides (x < 0.2), while Fe-rich hydrides show an unexpected appearance of ferromagnetism in the range 0.4 ≤ x ≤ 0.8. Some of the findings are compared with similar studies in U2Co2Sn and U2Co2InH1.9.
Permanent Link: http://hdl.handle.net/11104/0223637