INHOMOGENEOUS SPIN-POLARIZATION ANOMALY IN THE KONDO ALLOY Y(1-X)U(X)PD3

Host Y-89 nuclear magnetic resonance line widths have been measured in the Kondo alloy Y1-xUxPd3, x = 0,0.05,0.1, and 0.2, from 1.5 to 300 K . An anomalous temperature dependence of the Y-89 line shape indicates that the U-induced host electronic spin polarization is modified on a distance scale orders of magnitude shorter than the Kondo coherence l ength. This strongly suggests a qualitative difference between the gro und states of Y1-xUxPd3 and more conventional Kondo alloys.