Paramagnetic Susceptibility in theV3Si Type of Compounds in the Normal State

Tight-binding calculations, applied to a linear-chain model, give a rough description of the $d$-band structure of the ${\mathrm{V}}_3$Si type of compounds, with very high peaks in the density of states. The Fermi level should fall in one of these peaks. This leads to a large and strongly temperature-dependent Pauli susceptibility. The orbital Van Vleck susceptibility is discussed with respect to the position of the Fermi level in the $d$ band.