Magnetic properties of a hydrogenation-extracted UCoSn single crystal

0331073 - FZÚ 2010 RIV NL eng J - Journal Article
Kolomiets, A. - Andreev, Alexander V. - Havela, L.
Magnetic properties of a hydrogenation-extracted UCoSn single crystal.
[Magnetické vlastnosti hydrogenovaného UCoSn monokrystalu.]
Journal of Alloys and Compounds. Roč. 471, 1-2 (2009), s. 21-23. ISSN 0925-8388. E-ISSN 1873-4669
R&D Projects: GA MŠMT OC 144
Institutional research plan: CEZ:AV0Z10100520
Keywords : uranium intermetallics * single crystal * ferromagnetism * hydrides
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.135, year: 2009

Single-crystalline grain of UCoSn was extracted from the ingot by means of preferential hydrogen absorption along grain boundaries. Despite the presence of about 25% of polycrystalline hydride in the sample, data on uniaxial magnetic anisotropy of UCoSn could be obtained. The first anisotropy constant K1 = 30 MJ m-3 (or 120 K per formula unit). In the paramagnetic range, the anisotropy is characterized by a 230 K difference in values of the paramagnetic Curie temperatures Qp along the c axis and in the basal plane.

Monokrystal UCoSn byl extrahován z ingotu s využitím prefeernční absorpce vodíku podél hranic zrn. Nehledě na 25% obsah polykrystalického hydridu ve vzorku podařilo se určit konstantu magnetické anizotropie K1 = 30 MJ m-3. V paramagnetické oblasti lze anizotropii charakterizovat 230 K rozdílem v Qp c osy a v bazální rovině.
Permanent Link: http://hdl.handle.net/11104/0176700