Hydrogenation affecting the 5f magnetism

0356229 - FZÚ 2011 RIV GB eng J - Journal Article
Mašková, S. - Havela, L. - Šantavá, Eva - Miliyanchuk, K.
Hydrogenation affecting the 5f magnetism.
Journal of Physics: Conference Series. Roč. 200, č. 3 (2010), 032040/1-032040/4. ISSN 1742-6588. E-ISSN 1742-6596.
[International Conference on Magnetism - ICM 2009. Karlsruhe, 26.07.2009-31.07.2009]
Institutional research plan: CEZ:AV0Z10100520
Keywords : 5f magnetism * uranium intermetalics * hydrides
Subject RIV: BM - Solid Matter Physics ; Magnetism

In the case of 5f magnetism, the net increase of Tc due to the interstitial doping by hydrogen is generally understood as due to the increase of the density of states at the Fermi level, resulting from 5f band narrowing. The record value of Tc among UTX compound can be achieved in hydrides of U(Co,Fe)Sn series (Tc = 108 K for 15% of Fe). This concept, based on the 5f band formed by periodic array of U sites, does not work for Th doped compounds. In the case of U sublattice diluted by a non-magnetic element the expansion cannot have dominanteffect, partly because already doping by non-magnetic Th leads to an expansion.
Permanent Link: http://hdl.handle.net/11104/0194806