IMF2017

The classical Clausius – Mossotti relation links relative permittivity to fundamental properties of the atom, e.g., radii and polarizability. The Clausius – Mossotti relation also incorporates the Lorentz – Lorenz relation which links index of refraction of materials to fundamental properties of the atom, radii and polarizability. Further, the Curie and Curie – Weiss Laws of ferroelectrics like their magnetic counterparts are correlation relations. Here, using the coordination and temperature dependent ion properties, radii and polarizability, as taken from “NSMM Review – Part III” and “NSMM Review – Part IV”, respectively, we demonstrate that the fundamental Clausius – Mossotti relation effectively subsumes both the Curie and Curie – Weiss Laws. Further, we show that the linkage between the experimentally or empirically determined material parameters of Curie constant and Curie temperature are through fundamental ion properties. Such linkages are discussed in some detail with several examples provided that demonstrate that NSMM provides a method for a priori predicting or at least reasonably accurately modeling material Curie constants and Curie temperatures of materials.