Hydrogen as a probe into 5f-magnetism

0342552 - FZÚ 2011 RIV DE eng J - Journal Article
Mašková, S. - Havela, L. - Šantavá, Eva - Miliyanchuk, K.
Hydrogen as a probe into 5f-magnetism.
International Journal of Materials Research. Roč. 100, č. 9 (2009), s. 1187-1189. ISSN 1862-5282. E-ISSN 2195-8556
Grant - others:GA ČR(CZ) GA202/07/0418; GA MŠk(CZ) OC 146
Institutional research plan: CEZ:AV0Z10100520
Keywords : uranium compounds * magnetic properties * hydrogen absorption
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 0.862, year: 2009

We performed magnetic measurements on the hydrogenated system (U, Th)CoSn as part of an investigation of UTX compounds (T - transitional metal, X - p-metal). The U1-xThxCoSn compounds crystallize in the hexagonal structure (ZrNiAl type, space group P (6) over bar 2m). Hydrogen absorption of approximately 1 H/f could be achieved. The hydrogenation does not change the crystal structure. In all cases it leads to a unit-cell expansion by 3.0% to 3.6%. Studies of the temperature dependence of the magnetic susceptibility indicate a certain increase in the Curie temperature T-C in the hydrides, but the Th concentration at which ferromagnetism vanishes remains practically unchanged (U0.2Th0.8CoSn has a paramagnetic ground state).
Permanent Link: http://hdl.handle.net/11104/0185259