Abstract
The temperature dependent spin dynamics of vanadium impurities in the Kondo alloy AuV (ϑK?300 K) have been studied by means of measurements of 51V transverse relaxation rates (T−12) for the temperature range 1–260 K and vanadium concentrations of 0.2 to 0.5 at.%. Contrary to published reports, we find the quantity T2T to increase markedly with increasing temperature. Its magnitude at 260 K [15(±5) msec K] exceeds the limiting low-temperature value by a factor of 10. The observed increase in T2T indicates a large reduction in the impurity spin-correlation time, e.g., τe(ϑK)/τe(0) ?0.2.
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