Structure and magnetism of new R2Cu2In
hydrides (R = Ce, Gd)
Chem.
Met. Alloys 1
(2008) 46-49
https://doi.org/10.30970/cma1.0016
Khrystyna MILIYANCHUK, Alexandre V. KOLOMIETS, Yaroslav V. GALADZHUN, Ladislav HAVELA, Ihor I. BULYK, Andriy M. TROSTIANCHYN, Yaroslav M. KALYCHAK
Two new hydrides of intermetallic ternary
indides have been synthesized – Ce2Cu2InH2.8
and Gd2Cu2InH0.8. Both hydrides crystallize
with tetragonal structures of the Mo2FeB2 structure type,
similar to those of the initial compounds. The relative lattice expansion
reached 6.38% for Ce2Cu2InH2.8 and 4.10% for
Gd2Cu2InH0.8. Magnetic measurements did not
reveal any tendency toward magnetic ordering for Ce2Cu2InH2.8
down to 5 K. In the case of Gd, hydrogenation changes the type of magnetic
order from ferromagnetic for Gd2Cu2In (TC = 85.5 K)
to antiferromagnetic below 41 K for the hydride Gd2Cu2InH0.8.
Temperature
dependence of the magnetic susceptibility for Gd2Cu2InH0.8.
Keywords
Hydrogen storage materials / Magnetic measurements / X-ray diffraction