Abstract
Magnetization, electron spin resonance and heat capacity measurements have been made on the (Gd1-xYx)Ni2 compounds. Magnetization measurements reveal a moment deficiency for gadolinium in this series. In GdNi2 a value of 6.92μB is obtained for the gadolinium moment, which decreases further with yttrium substitution. In the concentration range 0.2 ⩽ x ⩽ 0.8 the samples show features seen in inhomogeneous ferromagnets.The ESR measurements reveal a negative g-shift and a very shallow ESR bottleneck in this system.The specific heat of the samples in the concentration range 0.2 ⩽ x ⩽ 0.8 show complex behaviour: downturn at low temperatures in the usual (C/T) against T2 graphs, anomalously large γ-values and so on. In the remaining compounds the specific heat shows normal behaviour. At the YNi2 end of the series a rapid increase in the host density of state takes place when gadolinium is substituted for yttrium.
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