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Updated: Feb 2, 2026
Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride
Published on: July 8, 2021
Crystal Structure and Magnetic Properties of Uranium Hydride UH2 Stabilized as a Thin Film
Ladislav Havela1, Mykhaylo Paukov1, Milan Dopita1
1Faculty of Mathematics and Physics , Charles University , Ke Karlovu 5 , 12116 Prague , Czech Republic.
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.
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