On the Theory of the Electron and of the Nucleon

WILLIAM BAND Yenching University, Peiping, China October 4, 1945 of the ferromagnetic alloys of Cu, Ni, Co, Fe, Mn, and the Heusler alloys, now permits a fairly decisive estimate of k8* for these elements and also a rough picture of the d-band head forms. In Table I, fzo ev represents the equivalent depth of the vacant levels in the d-band, obtained by producing the curve with its actual height and gradient at the top of the occupied levels, down to zero with normal form proportional to the square root of the depth. Actual depths differ somewhat from equivalent depths because the form of the band-density curve is not normal. The absence of ferromagnetism in such elements as Mn, Cu, Pd, Pt, and the alloys of Cu and Mn, is fully explained by the theory.