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.
HAVELA L.;
PAUKOV M;
DOPITA Milan;
HORAK Lukas;
DROZDENKO D;
DIVIS M.;
TUREK Ilja;
LEGUT Dominik;
KYVALA Lukas;
GOUDER Thomas;
SEIBERT Alice;
HUBER Frank;
Havela, L., Paukov, M., Dopita, M., Horak, L., Drozdenko, D., Divis, M., Turek, I., Legut, D., Kyvala, L., Gouder, T., Seibert, A. and Huber, F., Crystal Structure and Magnetic Properties of Uranium Hydride UH2 Stabilized as a Thin Film, INORGANIC CHEMISTRY, ISSN 0020-1669, 57 (23), 2018, p. 14727-14732, JRC109679.
2018-12-03
AMER CHEMICAL SOC
JRC109679
0020-1669 (online),
https://publications.jrc.ec.europa.eu/repository/handle/JRC109679,
10.1021/acs.inorgchem.8b02499 (online),
