Temperature dependence of electric permittivity of linear dielectrics with ionic and polar covalent bonds

Abstract

Results are presented of experimental verification of the relation describing temperature dependence of permittivity of linear dielectrics with ionic and polar covalent bonds. The relation has been derived by means of the thermodynamic method [1]. The verification has been realized on sodium chloride, sulfates, phosphates and arsenates of magnesium and cobalt, as well on barium titanate in paraelectric phase. The experimental results confirm the theoretical relation and, at the same time, indicate the possibility of determining the linearity region of properties of these dielectrics. © 1998 Elsevier Science Ltd. All rights reserved.