The physical mechanisms of relaxation times distribution in inorganic and organic disordered ferroelectrics

2007

Abstract We discuss the physical background for relaxation times distribution in organic and inorganic disordered ferroelectrics. We show that such background is a disorder which is believed to be a reason for relaxor behavior. Due to this disorder the internal electric and elastic fields are of a random nature being characterized by certain distribution function. Having the distribution function f ( E ) of random field E , we can obtain the distribution function of relaxation times F ( τ ) with the help of relation between τ and E . Latter relation can be obtained considering the dynamics of a single electric dipole in a random field created by the ensemble of defects and impurities in a s…