Magnetic properties of Lu2Fe16X (X = Fe, Ni, Cr, Si) intermetallics under high hydrostatic pressure

Magnetism of Lu2Fe17: The effects of Ru substitution, hydrogenation and external pressure

“…12). The moment is more stable than in Lu 2 Fe 17 (d ln M/dp = −0.17/GPa) but is less stable than in Lu 2 Fe 16 M where the F state is stabilized by the substitution of M = Ni, Cr, Si for Fe and where d ln M/dp = −(0.04-0.08)/GPa [23]. The p-T phase diagram of the hydride Lu 2 Fe 16.5 Ru 0.5 H 0.6 is shown in Fig.…”

“…K 2 does not exceed 0.1 MJ m −3 , which can be neglected in comparison with the absolute value of K 1 > 1 MJ m −3 . This is a common feature of the R-Fe intermetallics with non-magnetic R elements in general, and of the Lu 2 Fe 17 -based compounds, in particular [21,23]. The anisotropy of Lu 2 Fe 16.5 Ru 0.5 H 0.6 (K 1 = 1.28 MJ m −3 ) is as twice as weaker than that of Lu 2 Fe 17 (K 1 = 2.3-2.5 MJ m −3 [8,24]), nevertheless, it is stronger than in some Lu 2 Fe 17 -based compounds (e.g., Lu 2 Fe 14 Si 3 with K 1 = 1.…”

Influence of Ru on magnetic properties of Y2T17 (T = Fe, Co) and Y2Fe16Si single crystals

“…A large increase of T C was also found in the R 2 Fe 17 compounds upon different substitutions within the Fe sublattice [8][9][10][11]. It is often attributed to the volume expansion and to the dependence of Fe-Fe exchange interactions on the interatomic distances, which correlates well with the reduction of T C under external pressure.…”

Experimental and theoretical study of magnetic ordering and local atomic polarization in Ru-substitutedLu2Fe17

“…Minor expansion of the unit cell (ß0.4%) by absorbing light interstitial elements, such as hydrogen, was shown to fully reinforce the ferromagnetic state in Lu 2 Fe 17 H [20]. The robustness of the ferromagnetic phase against various magnetic and nonmagnetic substitutions at the Fe sites has been reported for Lu 2 Fe 17−x M x (M = Cr, Mn, Ni, Si, or Al) solid solutions [21][22][23]. In fact, strengthening of the ferromagnetic interactions manifested by dramatically increased ordering temperatures was observed in all modifiedby-doping compounds even for the case of the decreased unit cell volume while the AF phase ceased to exist.…”

“…Exposure of Lu 2 Fe 17 to chemical pressure (expansion or contraction of the lattice) caused by inserting suitable interstitial and substituting atoms was investigated in Refs. [19][20][21][22][23][24]. Minor expansion of the unit cell (ß0.4%) by absorbing light interstitial elements, such as hydrogen, was shown to fully reinforce the ferromagnetic state in Lu 2 Fe 17 H [20].…”