Abstract
Nuclear magnetic relaxation measurements have been utilized for a systematic study of the dynamical magnetic behavior of U 5f moments in UP, U 3P 4, UCu 5 and UAl 2. In spite of the marked difference in the static properties, all these compounds show, at higher temperatures, a strongly T-dependent, large relaxation rate of the 5f moment, which is found to be comparable to, or even greater than, the thermal energy k B T. These results suggest both strong hybridization between 5f and conduction electrons and the dominance of single-site dynamics in the U moment relaxation in these compounds.
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