ONE APPLICATION OF THERMODYNAMICS TO SOLID DIELECTRICS

A sort of equation of state for dielectrics has been deduced by applic ation of equilibrium thermodynamics. Solving of this equation for the case of linear dielectrics leads to the expressions for the Curie and Curie-Weiss laws, providing anew theoretical background to these laws. Also, a solution has been obtained which describes the temperature de pendence of electrical susceptibility of paraelectrics with ionic and polar covalent bonds and which, so far,bas not been described in the t heory of dielectrics. (C) 1998 Elsevier Science Ltd. All rights reserv ed.