Crystal structure and magnetic properties of RCu5−xPdx (R=Pr, Nd, Sm and Eu) alloys

Self-magnetic compensation and shifted hysteresis loops in ferromagnetic samarium systems

“…The CEP contributions at T = 0 K range between 0.2 and 0.4 µ B , whereas Sm magnetic moment values are calculated 8 to lie between 0.3 to 0.5 µ B . In ferromagnetic GdCu 4 Pd and GdScGe, the magnetic moment per formula unit values are above 7.6 µ B 18,21 , thereby, elucidating that the contribution from polarized conduction electron adds on to the local moment of 7 µ B /Gd 3+ in them. This in turn implies that the CEP contribution in SmScGe and SmCu 4 Pd would also be in phase 9 with the contribution from the 4 f -spin of Sm 3+ , and out of phase with net 4 f -magnetic moment of Sm 3+ ion.…”

“…Our rationale for the assertion of the self-compensation be- Polycrystalline samples of SmCu 4 Pd, SmPtZn, SmCd, SmZn, SmScGe and SmAl 2 were prepared by melting together stoichiometric amounts of the constituent elements in a sealed Tantalum crucible in an induction furnace, following usual special care and procedure for handling volatile Samarium metal 18,19 . Samarium, Scandium and Gadolinium metals were of 99.9 wt.…”

“…To avoid the reaction of the melt to the crucible in the case of SmScGe, the binary alloy ScGe was initially prepared by arc melting and to it an appropriate amount of Sm was added, before sealing the reactants in a tantalum crucible. Different specimen were given different heating and annealing treatments, following earlier leads in the literature 10,18,19 . the binary SmZn and SmCd were induction heated upto 1100°C, followed by annealing in evacuated sealed quartz tube at 920°C for 3 days.…”

“…The intermetallics, SmCd and SmZn, crystallize in cubic (B2) CsCl structure 8 , SmAl 2 and SmCu 4 Pd have cubic MgCu 2 13 (C15 Laves phase) and cubic MgCu 4 Sn structures 18 , respectively. SmScGe and SmPtZn have tetragonal CeScSitype 19 and orthorhombic TiNiSi-type 20 structures, respectively.…”