An interstitial-electron model for the structure of metals and alloys, 3

Abstract The interstitial-electron model for metals supplements the concepts of band theory to give a detailed interpretation of the properties of metals. The instantaneous picture of vacant and electron-occupied interstices given by the model clarifies the complex gradations in electrical conductivity which are not explained by an electron per unit volume term. The consideration of polarization of the itinerant electron cloud by ion cores with high positive fields and of interpenetration of the more deformable ion cores by itinerant electrons is another new feature of the model. The interstitial-electron model leads to the expectation of parallel gradations for electronic heat capacity and magnetic susceptibility and an inverse relation of both of these properties with electrical conductivity. The presence of (\bare2) in the metal structure is associated with a positive Hall Coefficient for a metal, and a new correlation between positive Hall Coefficient and superconductivity for a metal is pointed out.