Abstract
The effects of Fe ions incorporation into the Sr and Ti sites of SrTiO3 ceramics on the dielectric properties are studied in this work. It is found that the dielectric properties of the samples are sensitive to the components. Compared to SrTi0.9Fe0.1O3−δ with paraelectric property, Sr0.98Ti0.9Fe0.1O3−δ and Sr0.98Ti0.92Fe0.1O3−δ present dielectric relaxations at low temperature. After carefully analyzing the dielectric spectra by Arrhenius law and Power law, the dielectric relaxations are mainly attributed to the relaxation polarizations of defect dipoles formed by the off-center Fe ions at the Sr-sites and oxygen vacancies, and the dipole glass behavior are identified at low temperature.
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