The effect of substitution of La for Tb on some physical properties of Tb1−xLaxNi2 solid solutions

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

“…It is well known that the dilution of the magnetic R ions with substitution of non-or less magnetic atoms decreases the molecular field [4,9,11,12,14,15,[24][25][26]. Mm contains mostly Ce (50%) and La (30%) which in particular does not carry any moment in RCo 2 family [11,13,23].…”

“…It was reported that the Ce 1−x Gd x Co 2 alloys show a nonlinear reduction in T C with decrease in Gd content due to reduction in the R-Co and R-R interactions [26]. Furthermore, the substitution of LR's like La, Pr, etc., for HR's in Laves phase alloys revealed markedly modified magnetic behaviour [11,12,[24][25][26]. For instance, the replacing of magnetic HR with nonmagnetic La results in common magnetic dilution leading to weakening of exchange interactions and decrease in the T C [11,25].…”

“…Furthermore, the substitution of LR's like La, Pr, etc., for HR's in Laves phase alloys revealed markedly modified magnetic behaviour [11,12,[24][25][26]. For instance, the replacing of magnetic HR with nonmagnetic La results in common magnetic dilution leading to weakening of exchange interactions and decrease in the T C [11,25]. It was also noticed that the decrease in both T C and total magnetization with increasing Pr content in Gd 1−x Pr x Ni 2 due to reduction in strengths of the antiparallel coupling for Gd-Pr and Gd-Ni pairs [24].…”

Magnetic properties and specific heat of Dy1−xLaxNi2 compounds

“…Wallace et al [9] reported the Curie temperature of DyNi 2 of 32 K, whereas Markosyan observed the Curie temperature of 21 K [15]. Our recent magnetic susceptibility measurements on LaNi 2 have shown that this compound exhibits the Pauli paramagnetism in the temperature range 2-298 K [16].…”

“…The results are compared to other systems, in which the nonmagnetic La atoms substitute for holmium [12] and terbium [16].…”