Enormous Hydrogen Absorption in Nd2Ni2In

نویسندگان

  • S. Mašková
  • L. Havela
  • S. Daniš
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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تاریخ انتشار 2010