抄録
The nuclear spin-lattice relaxation time, T1, and the Knight shift of Sc45 disolved dilutely in Pd and Pt are measured in the temperature region of 1.4∼4.2 K. T1’s of Sc45 in Pd and Pt are about 10 to 20 times larger than that of pure Sc45 metal. These data are compared with those of V51 reported previously. Ab initio calculations of the relaxation rates of Sc45 and V51 in Pd are carried out. In the case of Sc45 in Pd, the resonance d states lie fairly above the d band and the Fermi level of Pd and the contribution from d electrons to the relaxation rate can be neglected, whereas in pure Sc45, this contribution is large. In the case of V51 in Pd, the resonance peaks of d stated in the local density of states at the V51 site lie just above the d band and the Fermi level of Pd. The d electrons make comparable contributions to the relaxation rate with s electrons.
