Theoretical paramagnetic form factors for hcp transition metals

The paramagnetic form factor of a metal gives detailed information about the response of the metal to an external static magnetic field. Measurements of this quantity by elastic neutron scattering have been carried out for many paramagnetic transition metals in the past decades. Theoretical understanding of these results has been slow to develop because the orbital contribution of the band electrons to the magnetic moment is difficult to calculate. Recently, we have performed a series of rather accurate form-factor calculations for cubic transition metals and in this paper the same considerations are extended to hexagonal-closed-packed systems. Results based on local-density bands have been obtained for Sc, Lu, Zr, and Y, and there is reasonable overall agreement between theory and experiments