Enormous Hydrogen Absorption in Nd2Ni2In
نویسندگان
چکیده
Hydrides of Nd2Ni2In were synthesized. Nd2Ni2In crystallizes in the tetragonal Mo2FeB2 structure type. Hydrogen absorption changes the crystal structure to orthorhombic (space group Pbma) so as to accommodate a higher amount of hydrogen. The unit-cell volume increases by 15.5 % for Nd2Ni2InH4.5 and by 21.6 % for Nd2Ni2InH6. Hydrogenation emphasizes antiferromagnetic coupling, but the Néel temperatures decrease with H concentration from 8 K in Nd2Ni2In down to 3 K in Nd2Ni2InH6.
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