DIELECTRIC-PROPERTIES OF BA(TI,CE)O-3 FROM 10(2) TO 10(5) HZ IN THE TEMPERATURE-RANGE 85-700 K

Ba(Ti1-xCex)O-3 ceramics with x = 0.1, 0.2, 0.3, 0.33, 0.4 and 0.5 hav e been synthesized by the mixed oxide method. Dielectric measurements were performed for Ba(Ti1-xCex)O-3 ceramics from 10(2) to 10(5) Hz in the temperature range 85-700 K. The dielectric measurements confirmed that the solid solution range extends up to about x = 0.3. In the soli d solutions, the temperature of the permittivity maximum was shifted a t a rate of -7 K/mol% Ce atom and the permittivity maximum decreased w ith increasing Ce content. The temperature and frequency dependence of the permittivity was fitted by the Curie-Weiss law beyond the transit ion temperature and characterized by parameters that are used to descr ibe relaxer behaviour.