K. Miliyanchuk

Peculiarities of U2T2X hydrides

U2Ni2SnU2Ni2Sn belongs to a large group of U2T2XU2T2X compounds which are very sensitive to hydrogen absorption. U2Ni2SnH1.8U2Ni2SnH1.8 and U2Ni2SnD1.8U2Ni2SnD1.8 exhibit similar magnetic behaviour—they order antiferromagnetically at T=87K, which is much higher than TN=26K in U2Ni2SnU2Ni2Sn. Deuterium lattice sites were determined by neutron diffraction. Uranium magnetic moments ≈0.8(3)μB lie in the basal plane of the tetragonal structure.

Magnetic properties of hydrides of uranium ternary intermetallics

We demonstrate the effect of hydrogenation on magnetic properties of several groups of uranium ternary intermetallics. The H absorption leads quite generally to stronger magnetic interactions and/or larger U magnetic moments. The effect is partly attributed to the volumes expansion reducing the 5f‐5f overlap, partly to weakening of the 5f‐ligand hybridization.

Peculiarities of U2T2XU2T2X hydrides

U2Ni2SnU2Ni2Sn belongs to a large group of U2T2XU2T2X compounds which are very sensitive to hydrogen absorption. U2Ni2SnH1.8U2Ni2SnH1.8 and U2Ni2SnD1.8U2Ni2SnD1.8 exhibit similar magnetic behaviour—they order antiferromagnetically at T=87K, which is much higher than TN=26K in U2Ni2SnU2Ni2Sn. Deuterium lattice sites were determined by neutron diffraction. Uranium magnetic moments ≈0.8(3)μB lie in the basal plane of the tetragonal structure.

Peculiarities of hydrides

U2Ni2SnU2Ni2Sn belongs to a large group of U2T2XU2T2X compounds which are very sensitive to hydrogen absorption. U2Ni2SnH1.8U2Ni2SnH1.8 and U2Ni2SnD1.8U2Ni2SnD1.8 exhibit similar magnetic behaviour—they order antiferromagnetically at T=87K, which is much higher than TN=26K in U2Ni2SnU2Ni2Sn. Deuterium lattice sites were determined by neutron diffraction. Uranium magnetic moments ≈0.8(3)μB lie in the basal plane of the tetragonal structure.