We calculate nonlinear Knight shift K vs susceptibility χ anomalies for Ce ions possessing local moments in metals. The ions are modeled with the Anderson Hamiltonian and studied within the noncrossing approximation. The K vs χ nonlinearity diminishes with decreasing Kondo temperature T₀ and nuclear-spin--local-moment separation. Treating the Ce ions as an incoherent array in CeSn₃, we find excellent agreement with the observed Sn $K(T)$ data.
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Kim et al. (1995) studied this question.
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