Title: Crystal Structure and Magnetic Properties of Uranium Hydride UH2 Stabilized as a Thin Film
Authors: HAVELA L.PAUKOV MDOPITA MILANHORAK LUKASDROZDENKO DDIVIS M.TUREK ILJALEGUT DOMINIKKYVALA LUKASGOUDER THOMASSEIBERT ALICEHUBER FRANK
Citation: INORGANIC CHEMISTRY vol. 57 no. 23 p. 14727-14732
Publisher: AMER CHEMICAL SOC
Publication Year: 2018
JRC N°: JRC109679
ISSN: 0020-1669 (online)
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC109679
DOI: 10.1021/acs.inorgchem.8b02499
Type: Articles in periodicals and books
Abstract: A new type of uranium binary hydride, UH2, with the CaF2 crystal structure, was synthesized in a thin-film form using reactive sputter deposition at low temperatures. The material has a grain size of 50−100 nm. The lattice parameter a = (535.98 ± 0.14 pm) is close to that in known Np (534.3 pm) and Pu (535.9 pm) iso-types. UH2 is a metallic ferromagnet with the Curie temperature TC ≈ 120 K. A very wide hysteresis loop indicates strong magnetocrystalline anisotropy. X-ray photoelectron spectroscopy reveals similarities with electronic structure of UH3, which is also ferromagnet with higher TC = 165 K.
JRC Directorate:Nuclear Safety and Security

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