Structural and magnetic transformations in the GdMn2Hx hydrides

Hydrogen induced structural and magnetic transformations in the hexagonal Laves phase ErMn2

“…The observed splitting can be understood as the decomposition of spinodal type. This behaviour is analogous to already observed decompositions in the cubic hydride TbMn 2 H x [3] and GdMn 2 H x [4]. However, for ErMn 2 H 1 it appears at a temperature about 70 K higher than, e.g.…”

“…Due to the analogy with the analysis and results of our earlier studies of GdMn 2 H x [4] and TbMn 2 H x [3], we confine this section to a summarising discussion based on Table 2 and Figs. 6-9.…”

“…Recently, very interesting transformations induced by hydrogen were observed in the cubic C15 (Fd3m space group) Laves phase type compounds of yttrium and rare earths with manganese, namely YMn 2 H x [1], DyMn 2 H x [2], TbMn 2 H x [3] and GdMn 2 H x [4]. Hydrogen atoms are located there in the A2B2 interstitial sites.…”

High pressure studies of GdMn2 and its hydrides

“…The GdMn 2 H x (x = 1, 2) hydrides were obtained by saturation of GdMn 2 with hydrogen gas under certain pressure and temperature conditions [3]. In fact, the samples were the same as those investigated in [3].…”

“…Some compounds showed relatively good hydrogen storage capacity up to five hydrogen atoms per formula unit [1]. It was observed that introduction of a certain amount of hydrogen can cause a structural transformation of the initial compound [2,3]. Although there are numerous papers dealing with structural and magnetic properties of particular Laves phases, there are very few reports on pressure investigations of the Laves phase hydrides.…”