Spin fluctuations in Al3V: An NMR study

We report the results of a nuclear magnetic resonance (NMR) study of Al3V a t temperatures between 4 and 300 K. V-51 and Al-27 Knight shifts exhibit a Curie-Weiss behavior corresponding to an effective moment P(eff)similar or equal to 0.32E mu(B) per V, indicating intrinsic weak magnetism localized i n vanadium orbitals. The T-1 exhibits root T dependence at higher temperatu res, indicative of nearly antiferromagnetic behavior of itinerant electrons . We have fit the observed behavior within the self-consistent renormalized model for itinerant magnetism, which provides good agreement with the meas urements. At about 80 K, the Knight shifts and spin-lattice relaxation rate s exhibit a crossover from Curie-Weiss magnetism to Korringa behavior. Comp aring previously reported specific heat and transport results with our NMR results, we find that the Wilson ratio and Kadowaki-Woods relation are clos e to those observed for highly correlated electron compounds, despite the r elatively small enhancement of gamma and chi. [S0163-1829(99)16835-8].