Thermoelectric power (S) and permittivity measurements were studied for TIO2and Fe loaded TiO2. The changes in thermoelectric power as a function of temperature and that of the dispersion of dielectrics has been attributed to the interaction of Fef3+with TiO2in the matrix. When such an interaction is not present 'there is no appreciable change In the thermoelectric power and dielectric dispersion. © 1994, Taylor & Francis Group, LLC. All rights reserved.