Structural and magnetic properties of TbMn2Hx 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.…”

Specific heat anomalies in RMn2(H,D) hydrides

“…The standard technique for the sample preparation and hydrogenation process was reported elsewhere [5,7]. A new method for the sample preparation was developed, which is based on mixing the powder of RMn 2 (H,D) x with micron-size Cu powder (with the mass-ratio of 1:1) and then compressing using the pressure of 2-3 kbar.…”

“…in the hexagonal ones. The hydrogen/deuterium absorption in RMn 2 (H,D) x leads to a modification of the crystal structure and strongly influences magnetic properties [5,6].…”