Knight Shift Anisotropy in Scandium and Yttrium and Nuclear Quadrupole Coupling in Scandium
Phys. Rev. 137, A1828 – Published 15 March, 1965
DOI: https://doi.org/10.1103/PhysRev.137.A1828
Abstract
The anisotropic Knight shift of the and nuclear magnetic resonances (nmr) in polycrystalline scandium and yttrium metal, respectively, has been observed and measured at room temperature by means of the magnetic field dependence of the ½ ↔ -½ transition. The isotropic Knight shift, , is (0.262±0.002)% for scandium and (0.367±0.005)% for yttrium. The axial component of the Knight shift, , is -(0.024±0.002)% for scandium and -(0.026±0.002)% for yttrium. The scandium nmr spectrum contains a central transition and three pairs of satellite lines, consistent with the spin of . The average spacing of the three pairs of satellites yields a lowest pure quadrupole frequency, Mc/sec, so that the quadrupole coupling, Mc/sec. Analysis of the central transition splitting yields the same value within the experimental uncertainty.