Nuclear Magnetic Resonance Study of the Pseudobinary Compounds, Y(Ni_1−xCo_x)₂

Abstract

The Knight shift (K) and the spin-lattice relaxation time (T₁) of ⁵⁹Co nuclei have been measured in the weak Pauli paramagnet, Y(Ni_1−xCo_x)₂. The values of K and (T₁T)⁻¹ for small x are larger than those for large x and they are insensitive to T and nearly constant, while the susceptibility increases with increasing x. These anomalous phenomena are explained by the change in the density of state of the Y atom and the 3d atom with x.