Abstract
We discuss the systematics of the nuclear spin-lattice relaxation rates of 3d-, 4d-, and 5d-series elements as dilute impurities in iron, and give a critical selection of experimental data. We also report a new value for the important case of Fe Fe. Many of the earlier experimental results were obtained by our group using the method of thermal cycling on oriented nuclei (TCON). A comparison with available ab initio calculations reveals that the latter show increasing deviations from the experimental results for the heavier transition-element series, but do reproduce well the observed systematic trends including the maxima near the middle of each series. We discuss possible reasons for the discrepancies and suggest some further experiments and calculations.
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