ANOMALOUS MAGNETIC-PROPERTIES OF METALLIC - V2O3 UNDER PRESSURE

The V-51 NMR shift and the spin-lattice relaxation rate (1/T-1) have b een measured in the metallic paramagnetic state of a V2O3 powder sampl e under pressure. The spin susceptibility deduced from the shift data has a maximum at T = 40 K. Also, a peak was observed in 1/T1T at T = 8 K. These phenomena resemble the spin-gap behavior observed in lightly doped cuprate superconductors. The anisotropy of the shift and 1/T-1 measured on a single crystal at ambient pressure suggests, however, th at nuclear relaxation at high temperatures is mostly due to orbital mo ments.