Study of the Anomalous Behavior of the Electrical Resistivity in Alloys Near the PrNi sub 5 sub 0 Composition

摘要

Temperature (300 to 4.2 exp 0 K), composition, and heat treatment dependence of resistivity of PrNi/sub x/ (x = 4.6 to 5.2) were studied. Metallography of the as-cast samples revealed that only PrNi sub 5 sub 0 is a single-phase alloy. Quenching from 1000 exp 0 C produces a broader homogeneous region, from x = 5.0 to 5.2. Within the single phase region, the unit cell dimension decrease in the ao direction but increase in the co direction with increasing Ni content; total unit cell volume decreases with Ni content. 14 figures. (ERA citation 08:012682)