Comparison of the influence of hydrogen on the magnetic properties of RMn2 and RFe2 Laves phase compounds

On the magnetic properties of pseudo-Laves phases RE1−yYyNi4−xAlxMg with RE=La, Ce and Gd prepared by both melting and ball milling

“…Magnetism of the Laves compounds RETM 2 have been an important subject since the ferromagnetism of ZrZn 2 found by Matthias and Bozorth in the mid to late 1950 [3]. In RETM 2 Laves phases, the magnetic properties result from the interaction between the localized magnetism of the RE and the itinerant magnetism of the 3d transition metal which could lead to a wide variety of magnetic structures [4,5]. Transition metals in RE-TM compounds and alloys exhibit gradually decreasing magnetic moments with increasing RE concentration and, in general, Ni in RENi 2 compounds is well known to loss its magnetic moment in the Laves phase compounds.…”

Effect of hydrogen as interstitial element on the magnetic properties of some iron rich intermetallic compounds

“…In addition to magnetization measurements this has been confirmed by investigation at the local scale like 57 Fe Mössbauer spectroscopy [19,20,28,29,52] or neutron diffraction studies [25][26][27]53]. On the contrary the iron sublattice magnetization is decreasing for x > 3.5 in the RFe 2 H x series [47,54]. The evolution of the hyperfine parameters is very dependent upon the local Fe atomic environment, in particular, on the number of hydrogen near neighbours.…”

Magnetic behaviour of hydrogenated Ho1−xMmxCo2 (x=0–0.4) alloys

“…There has been much attention is focused on the hydrogen absorption and its influence on the electronic, magnetic and structural properties of intermetallic compounds [1][2][3][4][5][6][7][8]. Among large number of the rare earth intermetallics, magnetic RCo 2 (R = rare earth metal) Laves phase alloys have been under intense scrutiny due to their intriguing magnetic behaviour [9][10][11][12][13][14][15].…”