Generalized Susceptibilities and Magnetic Ordering of Heavy Rare Earths

The generalized magnetic susceptibilities, χ(→q), have been calculated along the line Γ to A for the heavy rare-earth metals, Gd, Dy, Er, and Lu, using energy bands previously calculated by Keeton and Loucks. The initial ordering periodicity for each of these metals can be related to Fermi-surface geometry by examining the maxima in our susceptibilities. Agreement with experimental magnetic wave vectors is satisfactory.